Now consider a new situation: The ball is thrown upward from the ground with an initial velocity that takes exactly the same time tBA = tAB = 0.45 s to pass by the window, with the ball moving up rather than down. Consider the ball’s slowdown during this time: Let v ′ B be the ball’s speed (do not confuse the speed with the velocity) as it passes the window’s bottom on the way up and let v ′ A be its speed as it passes the window’s top, also in its way up. How does the ball’s slowdown ∆vup = v ′ B − v ′ A compare to its speedup ∆vdown on the way down? 1. ∆vup < ∆vdown if the mass of the ball is less than 0.1 kg and ∆vup > ∆vdown if the mass of the ball is greater than 0.1 kg 2. ∆vup < ∆vdown. 3. ∆vup = ∆vdown. 4. ∆vup > ∆vdown if the mass of the ball is less than 0.1 kg and ∆vup < ∆vdown if the mass of the ball is greater than 0.1 kg

Answers

Answer 1

Here since we know that

[tex]t_{BA} = t_{AB}[/tex]

this equation shows that there is no air resistance

so in that case the time taken by the object during it's accent must be equal to the time taken by object during decent

so if we are given that during the upward motion object passes the two points A and B then its change in speed is given as

[tex]\Delta v_{up} = v'_B - v'_A[/tex]

similarly if we take its downward motion then in that case

it will take same time to move through the two points

so we will have

[tex]\Delta v = a \Delta t[/tex]

so here we will have

[tex]\Delta v_{up} = \Delta v_{down}[/tex]


Related Questions

The diagram shows the electric field in the vicinity of a charge.


At which point is the electric field strongest?

A) W
B) X
C) Y
D) Z

Answers

C) Y is the strongest point in the electric field.

Answer: At Y electric field is strongest.

Explanation :

The space around a charged particle in which the effect of the electric force is experienced is called electric field.

The electric field lines are the imaginary lines. The field lines for the positive charge is outwards and for negative charge, it is inwards.

The field lines are strongest at the point where the field lines are compact or very close.

In this case, the electric field is strongest at point Y.

Hence, the correct option is (c) " point Y ".

A football coach starts at the 35-yard line (a) and walks to the 15-yard line (b). He turns around and walks to the 40-yard line (c). He turns around again and walks back to the 0-yard line (d). He turns around once more and walks back to the 25-yard line (e), thus completing his 10 minutes of pacing.

Answers

a) A football coach starts at the 35-yard line and walks to the 15-yard line.


So, the first amount of displacement covered is calculated as below.

Displacement = final point-initial point

D1 = 35 - 15 = 20 yards.


b. He turns around and walks to the 40-yard line.


Coach starts from the 15-yard line and walks to the 40-yard line, so his displacement is calculated as below


D2 = 40 - 15 = 25 yards.


3. He turns around again and walks back to the 0-yard line.


Coach starts from the 40-yard line and walks to the 0-yard line, so his displacement is calculated as below


D3 = 40 - 0 = 40 yards.


4. He turns around one more and walks back to the 25-yard line.


Coach starts from the 0-yard line and walks to the 25-yard line, so his displacement is calculated as below


D4 = 0 + 25 = 25 yards.


The total distance walked is


D = D1 + D2 + D3 + D4 = 20 + 25 + 40 + 25 = 110 yards.


Hence average speed of the coach is


Spee = 110[yards]/10[min] = 11 [yards/min].

Final answer:

To calculate the average velocity for each interval, divide the distance traveled by the time taken. To calculate the average velocity for the entire motion, add up all the distances traveled and divide it by the total time taken.

Explanation:

In this question, we are given the distances and times for different intervals of a football quarterback's motion. To calculate the average velocity for each interval, we divide the distance traveled by the time taken for that interval. For the first interval (15.0 m in 2.50 s), the average velocity is 6.0 m/s. For the second interval (-3.00 m in 1.75 s), the average velocity is -1.7 m/s. And for the third interval (21.0 m in 5.20 s), the average velocity is 4.0 m/s.

To calculate the average velocity for the entire motion, we add up all the distances traveled and divide it by the total time taken. In this case, the total distance is 15.0 m + (-3.00 m) + 21.0 m = 33.0 m and the total time is 2.50 s + 1.75 s + 5.20 s = 9.45 s. Therefore, the average velocity for the entire motion is 33.0 m / 9.45 s = 3.49 m/s.

The form of energy that can move from place to place across the universe is . On Earth, the main source of this energy is .

Answers

the sun is the source of energy for the earth, either via light and heat or motion via earth's orbit

Answer: Light energy; sun

Explanation: The form of energy that can move from one place to another across universe is light energy.

This energy can move from space to the earth and is a soul of energy on earth.

On earth the energy comes from sun, in the form of light and heat. This provides optimum temperature for many processes that is carried out on earth.

Hence, the correct answers are: light energy and sun.

0.8 mj of energy are used by a blender in 3 and a half minutes what is the power rating on the blender

Answers

Answer:

   Power rating on the blender = 3809.52 Watts

Explanation:

   We have expression for power equal to ratio of work and time,

   Energy used by blender = Work done by electricity = 0.8 MJ = [tex]0.8*10^6J=800000J[/tex]

   Time of using blender = 3.5 minutes = 210 seconds

   So power of blender = 800000/210 = 3809.52 Watts

   Power rating on the blender = 3809.52 Watts

What can cause attention deficit hyperactivity disorder (ADHD)? A. low levels of gamma-amino butyric acid B. low levels of serotonin C. low levels of endorphins D. low levels of acetylcholine

Answers

Answer: B

Explanation: Because serotonin influences mood, social behavior, sleep, and memory. Low levels of this will cause attention deficit hyperactivity disorder or (ADHD).

Final answer:

ADHD is a complex disorder with genetic, neurological, and environmental causes. While low levels of serotonin may contribute to neurotransmitter imbalances in ADHD, it's important to consider the disorder's multifaceted nature.

Explanation:

Research into the cause of Attention Deficit Hyperactivity Disorder (ADHD) reveals it is a complex disorder with multiple potential causes. While the options provided focus on neurotransmitters, it's essential to understand that ADHD involves a combination of genetic, neurological, and environmental factors. Specific genes associated with neurotransmitters like dopamine and serotonin have been linked to ADHD. Neuroimaging studies show structural differences in the brain, notably in areas responsible for impulse control and organization, hinting at the neurological underpinnings of ADHD. Moreover, environmental factors such as exposure to toxins and maternal substance use during pregnancy contribute to the disorder's development. However, among the listed options, low levels of serotonin B. are closely related to the theory of neurotransmitter imbalance in ADHD, understanding that it is just one piece of a much larger puzzle.

two forces are acting on a wheelbarrow. One force is pushing to the right and an equal force is pushing to the left. What can you say about the wheelbarrow's movement? A) it is slowing down. eliminate b) it is not accelerating. c) it is moving faster and faster.. d) its speed is changing at a constant rate.

Answers

B it is not accelerating

A child throws a steel ball straight up. consider the motion of the ball after it has left the child’s hand but before it touches the ground, and assume that forces exerted by the air are negligible. for these conditions, identify the force(s) acting on the ball.

Answers

Final answer:

Once the steel ball is thrown, the primary force acting upon it is gravity, which pulls the ball downwards. Additionally, inertia ensures the ball continues moving in an upward and then downward direction. After the ball has left the child's hand, it's considered to be in a state of free-fall.

Explanation:

In the situation where a child throws a steel ball straight up, the primary force acting on the ball once it leaves the child's hand is gravity. Once the ball has left contact with the child's hand, the ball is in a state of free-fall. This motion is one-dimensional and has a constant acceleration of magnitude g.

The ball continues moving upward, then downward due to inertia, the tendency of an object in motion to stay in motion. Please note that no object can exert force on itself; therefore, the child's hand no longer accelerates the ball or exerts force on it once contact is lost.

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When the speed of electrons striking the anode of an x-ray tube increases, the _____ of the emitted x-rays increases.

Answers

Final answer:

When the speed of electrons striking the anode of an x-ray tube increases, the energy of the emitted x-rays increases.

Explanation:

This happens because as electron speed (and consequently their kinetic energy) increases, upon interacting with the anode material, they are decelerated and their kinetic energy is converted into electromagnetic energy in the form of x-rays.
The relationship between accelerating voltage and the maximum x-ray energy is given by the equation Emax = h fmax = qe V, where h is Planck's constant, fmax is the maximum frequency, qe is the charge of an electron, and V is the accelerating voltage.

As the filament voltage increases, which accelerates the electrons towards the anode, the emitted x-rays have higher energy, and therefore a higher frequency.

The driver of a car moving with a constant speed applys the brakes and the car comes to a stop after 3.5 meters. Which force causes the deceleration of the car?

Answers

friction ... brake pads to road wheels

~*~WILL GIVE BRAINLIST~*~
What is the velocity in meters per second of a runner who runs exactly 110 m toward the beach in 72 seconds.
A) 0.654 m/s toward the beach
B) 1.53 m/s toward the beach
C) 15.3 m/s toward the beach
D) 7920 m/s toward the beach

Answers

Your answer is B. 1.53 m/s towards the beach.

110/72 = 1.52777 and then you round it to 1.53  :)


Part a a box is being pulled to the right over a rough surface. t > fk , so the box is speeding up. suddenly the rope breaks. what happens? the box a box is being pulled to the right over a rough surface. t > , so the box is speeding up. suddenly the rope breaks. what happens? the box keeps its speed for a short while, then slows and stops. slows steadily until it stops. stops immediately. continues speeding up for a short while, then slows and stops. continues with the speed it had when the rope broke.

Answers

The box slows steadily until it stops.

Let us understand why this should be the case.

We know that the Tension Force in the rope is greater than Friction and hence is responsible for accelerating the box.

As soon as the rope breaks, the Tension Force becomes 0 and the box is left with only the Friction acting on it.

Since the friction takes over immediately, the box begins to slow down at a steady pace until it stops completely.

Final answer:

Following the breaking of the rope, the box continues with the speed it had at that moment. The box then slows down due to the unopposed force of friction and eventually halts.

Explanation:

In the given scenario, a box is pulled to the right over a rough surface with a force t that is greater than the friction force f.k. This indicates that the box is accelerating to the right. When the rope breaks, the force t acting on the box suddenly becomes zero. However, the force of friction f.k still acts on it. This force f.k, previously balanced by t, now unopposed, slows the box down by acting opposite to its direction of motion. Therefore, the box continues with the velocity it had when the rope broke, slows down steadily due to friction until it eventually stops.

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The table lists the mass and charge of a proton and a neutron.



How do the gravitational and electrical forces between a proton and a neutron compare?

A) The gravitational force is much smaller than the electrical force for any distance between the particles.
B) The gravitational force is much larger than the electrical force for any distance between the particles.
C) The gravitational force is much smaller than the electrical force for only very small distances between the particles.
D) The gravitational force is much larger than the electrical force for only very small distances between the particles.

Answers

B. The gravitational force is much larger than the electrical force for any distance between the particles.

The gravitational force is much larger than the electrical force for any distance between the particles. Then the correct option is B.

What is Columb's law?

The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

The electrical force between the masses,

[tex]\rm F_e = k\dfrac{q_pq_n}{r^2} \\\\\ F_e= 9 \times 10^ 9 \times \dfrac{1.61 \times 10^{-19} \times 0 }{r^2} \\\\ F_e = 0 \ N[/tex]

The gravitational force between the masses is,

[tex]\rm F_g = G \dfrac{m_pm_n}{r^2} \\\\ F_g = 6.67 \times 10^{-34}\times \dfrac{1.673 \times 1.675 }{r^2} \\\\ F_g =\dfrac{ 1.869 \times 10^{-33}}{r^2} \ N[/tex]

From the above calculation, observed that the gravitational force is much larger than the electrical force for any distance between the particles.

Hence the correct option is B.

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A space probe approaches a planet and goes into a low orbit. If the orbiting probe's velocity is
vx=−v sin(ωt),
vy=v cos(ωt),
v = 7.77 103 m/s,
ω= 1.20 10-3 radians/s,
what is the average magnitude of acceleration of the probe if it remains in orbit for 24 minutes?

Answers

here given that the velocity of the probe is

[tex]v_x = - v sin\omega t[/tex]

[tex]v_y = v cos\omega t[/tex]

now at initial position where t = 0

[tex]v_{xi} = - v sin0 = 0[/tex]

[tex]v_{yi} = v cos 0 = v[/tex]

Now after t = 24 minutes we need to find final components of velocity

[tex]v_{xf} = - v sin(1.20* 10^{-3} * 24*60) = -v sin(1.728)[/tex]

[tex]v_{yf} =  v cos(1.20* 10^{-3} * 24*60) = v cos(1.728)[/tex]

now as we know that acceleration is given as

[tex]a = \frac{v_f - v_i}{t}[/tex]

Now for x direction of motion

[tex]a_x = \frac{v_{xf} - v_{xi}}{t}[/tex]

[tex]a_x = \frac{- v sin(1.728) - 0}{24*60}[/tex]

[tex]a_x = \frac{-7.77*10^3 * 0.99}{24*60}[/tex]

[tex]a_x = -5.33 m/s^2[/tex]

Now for y direction of motion

[tex]a_y = \frac{v_{yf} - v_{yi}}{t}[/tex]

[tex]a_y = \frac{ v cos(1.728) - v}{24*60}[/tex]

[tex]a_y = \frac{7.77*10^3 * (-0.16) - 7.77 * 10^3}{24*60}[/tex]

[tex]a_y = -6.24 m/s^2[/tex]

now in order to find the magnitude of acceleration we can say

[tex]a = \sqrt{a_x^2 + a_y^2}[/tex]

[tex]a = \sqrt{5.33^2 + 6.24^2} = 8.2 m/s^2[/tex]

Select the correct answer.
What did the observation of the spectrum of different galaxies reveal?
A.
there were more galaxies whose spectrum was blueshifted
B.
there were no galaxies whose spectrum was redshifted
C.
there were more galaxies whose spectrum was redshifted
D.
there were no galaxies whose spectrum was blueshifted

Answers

Historically, the correct choice is C.

A stone is thrown from a cliff and lands in the sea. Air resistance is negligible. Which statement is correct whilst the stone is in motion?

vertical component of stone's displacement is constant
horiz. comp. of stone's displacement is constant
vertical component of stone's velocity is constant
horiz. comp. of stone's veolcity is constant

Answers

Since the stone is travelling, the displacement cannot be constant. This leaves the last 2 choices as possibilities. Now consider the acceleration that can act on the stone. Acceleration due to gravity is the only one. That means the horizontal component of the stone has to be constant since there is no acceleration in the horizontal direction.

There can be no consistent displacement since the stone is moving. The latter two options are still viable. Now think about how the stone may accelerate. The only one is acceleration brought on by gravity. Since there is no acceleration in the horizontal direction, the stone's horizontal component must thus be constant.

What is a motion ?

The phenomenon of an item changing its location with respect to time is known as motion in physics. Motion is mathematically characterised in terms of displacement, distance, velocity, acceleration, and speed as well as the observer's frame of reference and the measurement of the change in the body's location with respect to that frame over time. Kinematics is the area of physics that studies how motion is affected by forces, whereas dynamics is the area that studies how motion is affected by forces.

An object is said to be at rest, motionless, immovable, stationary, or to have a constant or time-invariant location with respect to its surroundings if it is not moving with respect to a certain frame of reference. According to contemporary physics

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Water in the oceans, rivers, and lakes turns to water vapor. This process is called ___________ and requires heat energy from the Sun.

Answers

It would be evaporation.
it would be evaporation

A 300 g ball and a 100 g ball are dropped from a tower. Both balls are the same size and there is no air resistance. Which one hits the ground first?

Answers

If there is no air resistance, then both of those balls ... as well as a feather, a piece of paper, a handkerchief, a bowling ball, a fried egg, a hammer, a car, a school bus, an airplane, a diesel locomotive, a computer, and a battleship ... if dropped at the same time from the same height, fall together, and hit the ground at the same time.  We've known this for about 400 years, since Galileo.

Final answer:

According to Galileo's law of falling bodies, in a vacuum with no air resistance, all bodies fall at the same rate regardless of their mass. Therefore, both the 300g and 100g balls will hit the ground at the same time.

Explanation:

The two balls, one weighing 300 grams and the other 100 grams, when dropped from a tower, will hit the ground at the same time. This is based on Galileo's law of falling bodies, which states that in a vacuum, where there is no air resistance, all bodies, no matter their mass, fall at the same rate. Therefore, the weight of the balls does not affect the time it takes for them to reach the ground.

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98 POINTS PLEASE HELP What can a transistor do in order to fulfill its function in a circuit? Check all that apply.

control which layer is the emitter
control its own semiconductance
change the dopants in the transistor
act like an insulator
act like a conductor

Answers

control which layer is the emitter  and change the dopants in the transistor are fixed in a transistor and cannot be changed or controlled.

transistor is made of silicon which is a semiconductor. it consists of two diodes which can act as a conductor and insulator. so the answer is:

-  control its own semiconductance

- act like an insulator

- act like a conductor


Final answer:

A transistor in a circuit can act like a conductor when the base is forward-biased, allowing current to flow. It can also act like an insulator when the base is reverse-biased, preventing current flow. The characteristics of a transistor such as dopant levels and emitter layer are fixed during manufacturing and are not changeable during operation.

Explanation:

A transistor is a semiconductor device used to amplify or switch electronic signals. A typical junction transistor consists of three parts: the emitter, the base, and the collector. The transistor can control its own semiconductor and act like a conductor or an insulator. Here's what a transistor can do in a circuit:

Act like a conductor: When the base is forward-biased, it allows current to flow through the transistor, essentially conducting the electricity.Act like an insulator: When the base is reverse-biased or not biased at all, the transistor prevents current flow, insulating the circuit.

It doesn't change the dopants in the transistor or control which layer is the emitter, as these characteristics are determined during the manufacturing of the transistor and are not changeable in operation.

Transistors are essential components in integrated circuits (ICs) and are found in nearly all modern electronic devices. They are the basis of digital circuits that use binary code for processing information.

How many arrows of force would be needed in a free body diagram of a rocket taking off from the moon? Ignore any solar system objects other than the moon itself.
One
Two
Four
Three

A person is trying to lift a crate that has a mass of 15.3 kg. The normal force of the floor is currently supplying 150 N of force. How much force does the person need to supply in order to pick up the crate?
150 N
144 N
294 N
130 N

A person is trying to lift a crate that has a mass of 30 kg. The normal force of the floor is 150 N of force. How much force is the person currently exerting?
114 N
150 N
294 N

Answers

#1

When rocket is launched from the moon then there will be two forces on the rocket

1. Due to ejected gases the reaction force on rocket in forward direction

2. due to gravitational attraction of moon

So here we need to draw two arrow on its FBD in which first arrow is in the direction of motion of rocket which will be the reaction force on it while other arrow is opposite to its motion which is due to gravitational attraction force.

So answer would be TWO

#2

When crate is placed on the floor then in order to lift the crate upwards we always need an external force that will counter balance the normal force of crate.

Which mean if we make the normal force to be zero then crate will lift upwards and in order to make it zero we need to apply same force as that of normal force

So here the normal force is given as 150 N so we also need to apply 150 N force in order to lift it upwards


#3

If a person lift a box upwards by some force then we can say by force balance

Force applied by person + Normal force = Weight of the box

[tex]F_{app} + F_n = mg[/tex]

we will plug in all values in it

[tex]F_{app} + 150 = 30 * 10[/tex]

[tex]F_{app} = 300 - 150[/tex]

[tex]F_{app} = 150 N[/tex]

So we applied 150 N force on it

#4

In all cases we need to use force balance

like in case 3

[tex]T + T = W[/tex]

[tex]2T = W[/tex]

[tex]T = \frac{W}{2}[/tex]

so here in 3rd case tension is half of the weight

which will be the least tension in all cases

so answer is CASE 3

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Which is a standard metric base unit, correctly matched with what it measures?

A) Kelvin: time

B) second: time

C) meter: volume

D) gram: temperature

Answers

Ok srry bout last time but the answer is A) kelvin: time the reason is because everything else is a SI. Hope this helps and TURTLE

im not sure but i think its a or b im pretty sure

carbon monoxide pure substance or mixture and why

Answers

carbon monoxide is a mixture cause it's a mixture of
different chemical compounds

such as air and CO but they're chemically mixed together which makes it no longer pure


When two elements combine then it’s a mixture not a put substance. So carbon monoxide is a mixture.

What colours result from mixing green and blue light?

Answers

you get the color yellow :)

Help needed
A volcanic eruption adds carbon dioxide to the air. This is an example of interactions between the

1)

atmosphere and geosphere


2)

geosphere and biosphere


3)

hydrosphere and biosphere


4)

hydrosphere and geosphere

Answers

Answer: Atmosphere and geosphere.

Geo-sphere is the solid part of the earth. Hydrosphere is the water part. The living things on the earth make up the biosphere. The gases, water vapors etc make up the atmosphere. When a volcanic eruption adds carbon dioxide to the air, the carbon-dioxide is being added from geosphere to the atmosphere. Hence, there is interaction between atmosphere and geosphere.

This form of argument is an inductive form that reasons from the general to the specific.

Answers

Answer;

Statistical syllogism

Explanation;

An inductive argument is an argument in which it is thought that the premises provide reasons supporting the probable truth of the conclusion. In an inductive argument, the premises are intended only to be so strong that, if they are true, then it is unlikely that the conclusion is false.

The Statistical syllogism or proportional syllogism or direct presumption is a non-deductive syllogism. It argues from a sweeping statement true for the most part to a particular case in opposite to induction, which argue from specific cases to generalizations.

Final answer:

Inductive reasoning is a logical process that starts from specific observations and moves towards general conclusions, commonly utilized in the scientific method. Unlike deductive reasoning, which moves from general to specific, inductive reasoning goes from the specific to the general and may result in conclusions that are not always accurate.

Explanation:

The student is asking about a form of argument called inductive reasoning, which is a logical process in which multiple premises, all believed true or found true most of the time, are combined to obtain a specific conclusion. Inductive reasoning is often used in hypothesis-based science, where scientists observe particular instances and construct broad generalizations based on these observations. Unlike deductive reasoning, which starts with a general statement and moves towards a specific conclusion, inductive reasoning works the other way by starting from specific observations to reach a general conclusion.

For instance, noticing that apples, bananas, and oranges all grow on trees might lead one to generalize that all fruits grow on trees. This is inductive reasoning; however, this conclusion may be false, evident by the existence of fruits like strawberries that do not grow on trees. Scientific method involves both inductive and deductive reasoning, where theories formulated through inductive reasoning generate hypotheses that are subsequently tested with deductive reasoning.

To determine the speed of a wave, you would use which of the following formulas?


a. speed = frequency x amplitude


b. speed = wavelength x frequency


c. speed = wavelength x amplitude


d. speed = wavelength x period User: Which part of the ear amplifies the vibrations from sound waves?


A. outer ear


B. inner ear


C. middle ear


D. both a and b

Answers

speed = wavelength x frequency determine the speed of a wave,

Explanation :

(a) The distance between two consecutive crests or troughs is called wavelength of a wave. It is denoted by [tex]\lambda[/tex]

The number of vibrations produced per second is called its frequency. It is denoted by [tex]\nu[/tex].

We know that the distance covered per unit time is called the speed of the wave i.e.

[tex]s=\dfrac{d}{t}[/tex]

The distance covered by the wave is [tex]\lambda[/tex]. So,

[tex]s=\dfrac{\lambda}{T}[/tex]

We know that T is the time period of the wave and the relation between the frequency and the time period is [tex]\nu=\dfrac{1}{T}[/tex]

So, [tex]speed=wavelength\times frequency[/tex]

So, the correct option is (b).

(b) Human ear consists of the outer ear, middle ear, and inner ear.

Middle ear amplifies the vibrations from the sound waves. It consists of three bones namely hammer, anvil and stirrup. The amplification of sound waves takes place many times by these bones.

So, the correct option is (c).

Tell me one way compound and elements are similar & one way compounds and elements are different

Answers

similar: they are both made of elements

diff: an element is just one of itself whereas a compound is 2 or more element chemically combined

CD bisects AB at point G. If AE = BE, which equation must be true?


A.
BE = BG
B.
AE = 2(BG)
C.
AE = BG
D.
AG = BG
E.
none of these

Answers

Answer: The correct answer is option D.

Explanation:

It is given that line CD is bisecting the side AB in triangle ABE

and AE = BE

Bisecting a line segment means that diving a line segment into two equal parts. So, when CD bisects side AB at point G it means that:

AG = BG

Hence, the correct answer is option D.

CD bisects AB at point G. If AE = BE, this equation must be true is D.AG = BG.

What is the work of the bisector?

Bisector cuts something in 1/2 of. An attitude bisector is a line that cuts a given attitude in 1/2 of. The perpendicular bisector of a line phase is the road that cuts the given phase in 1/2 of and is at proper angles to it.It is for this reason that line CD is bisecting the facet AB in triangle ABE.

Bisecting a line phase method that diving a line phase into  same parts. So, whilst CD bisects facet AB at factor G it method that:AG = BG.and AE = BG

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How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewalk?

Answers

As per Doppler's effect of sound we know that when source and observer moves with some relative velocity with respect to each other then the frequency of sound that observer will hear is different from the actual frequency of sound and it is known as Doppler's effect.

So here when relative motion of bike is towards the observer the frequency is given by

[tex]f = f_0*\frac{v}{v-v_s}[/tex]

so the frequency heard by the observer will be more than actual frequency in this case

So now when relative motion of bike is away from the observer the frequency is given by

[tex]f = f_0* \frac{v}{v+ v_s}[/tex]

from above equation we can say that in this case frequency heard by observer will be less than actual frequency

Relative Motion of a Motorcycle Affect

The relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewalk as, the motorcycle approaches the observer, the frequency increases. When the distance decreases between the source of the sound and an observer then, the vibrations or sound level increases and if, it moves farther apart the frequency decreases. Therefore, the relative motion affects the frequency of the sound.


To win the game, a place kicker must kick a
football from a point 28 m (30.6208 yd) from
the goal, and the ball must clear the crossbar,
which is 3.05 m high. When kicked, the ball
leaves the ground with a speed of 18 m/s at
an angle of 48◦
from the horizontal.
The acceleration of gravity is 9.8 m/s
2
.
By how much vertical distance does the ball
clear the crossbar?
Answer in units of m.

Answers

v = 18cos48 m/s  

So time = distance/speed  

= 28/18cos48  

= 2.3247413  

Resolving vertically, now use s = ut + (0.5)a(t^2)  

Where s is the unknown distance (the height above the GROUND)  

u is initial (vertical) speed = 18sin48  

a = -9.8 m/s (negative since we take upwards as positive)  

t = 2.3247... (what we found previously)  

Putting the numbers into the formula gives 4.616126809  

Take away the height of the goalpost (3.05) = 1.566126809  

= 1.57m above the crossbar.

hope this helps :)

We have that the  vertical distance the ball clear the crossbar is

x=1.795

From the question we are told

To win the game, a place kicker must kick a football from a point 28 m (30.6208 yd) from  the goal, the ball must clear the crossbar,  which is 3.05 m highthe ball  leaves the ground with a speed of 18 m/s at  an angle of 48◦The acceleration of gravity is 9.8 m/s

Generally the  equation for the t  is mathematically given as

[tex]t=\frac{d}{vcos\theta}\\\\t=\frac{28}{18cos48}\\\\t=2.3sec[/tex]

Generally the Newtons equation for the distance  is mathematically given as

[tex]s=uyt+1/2at^2\\\\s=18sin48*(2.3)-\frac{9.8}{2}*(2.3)^2\\\\s=4.845[/tex]

Therefore

The Distance clear will be

[tex]x=s-3.05\\\\x=4.845-3.05[/tex]

x=1.795

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Apply a force of 50 N right to the box. Describe the motion of the box using physics terms (i.E. Velocity, acceleration, displacement). Refer to the speedometer in your answer.

Answers

Final answer:

Applying a 50 N force to the box will accelerate it, increasing its velocity over time as long as the force is applied and this can be measured by a speedometer. The displacement of the box can also be calculated using physics equations of motion.

Explanation:

When a force of 50 N is applied to the box, Newton's Second Law F=ma (Force equals mass times acceleration) is used. Acceleration is calculated by dividing the force by the mass of the box. Let's assume a box of 10kg, in this case, the box will have an acceleration of 50/10= 5 m/s² right.

This acceleration changes the velocity of the box over time. If the box was initially at rest, its velocity will increase at a rate of 5 m/s every second in the direction of the force applied.

Displacement, which is a measure of 'how much ground the object has covered' under the action of the force, can be calculated by integrating the velocity, but in this case, since the initial speed is zero and the acceleration is constant, we can also use the equation of motion: d = 0.5 * a * t², where t represents the time for which the force is applied. As for the speedometer, it would show an increasing speed over time as long as the force is being applied.

Learn more about Force and Motion here:

https://brainly.com/question/14662717

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