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

Answer 1
speed = wavelength x frequency determine the speed of a wave,
Answer 2

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).


Related Questions

The table shows the charges and the distance between five different pairs of objects.


If the force between two charges, q, separated by a distance, d, is F, what is the list of the other forces, from greatest to least?

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

Answers

B. Y,W,X,Z is the answer, Hope it helps

Answer : Y > W > X > Z

Explanation :

The electrostatic force is given by :

[tex]F=k\dfrac{q_1q_2}{d^2}[/tex]

k is the electrostatic constant

q₁ and q₂ are charges

d is the distance between them

We will calculate forces one by one :

[tex]F=k\dfrac{q.q}{d^2}=\dfrac{kq^2}{d^2}[/tex]

[tex]W=k\dfrac{q.2q}{d^2}=\dfrac{2kq^2}{d^2}=2F[/tex]

[tex]X=k\dfrac{q.q}{(2d)^2}=\dfrac{kq^2}{4d^2}=\dfrac{F}{4}[/tex]

[tex]Y=k\dfrac{3q.q}{d^2}=\dfrac{3kq^2}{d^2}=3F[/tex]

[tex]Z=k\dfrac{q.q}{(3d)^2}=\dfrac{kq^2}{9d^2}=\dfrac{F}{9}[/tex]

So, the force from greatest to least will be :

Y > W > X > Z

So, the correct option is (B)

Which of the following would be an example of basic research?


A) Spencer's research on WWII radar technology that led to the invention of the microwave oven.


B) Experimenting to determine the fundamental properties of x-rays.


C) Edison's research and use of other scientists' work to invent the light bulb.


D) Morrison and Franscioni's research done to create the Frisbee.

Answers

Basic Research - Option B

Experimenting to determine the fundamental properties of x-rays would be an example of basic research. The experimental primary analysis tries to determine the laws of the events. The primary analysis is expected to know the stuff, its sort, its characteristics and its performance. It examines to get the speculation. To obtain wherewith the stuff performance yet not how to practice these forms for a firm determination.

The research of the characteristics of the particle to explain whatever it is, how it combines with other atoms, how it determines the characteristics of the material are some instances of primary analysis. For example examining to ascertain the basic features of x-rays. Spencer's research on WWII radar technology that drove to the discovery of the microwave furnace.

Edison's research and application of other scientists task is to create the light bulb, and Morrison and Franscioni's research was made to build the Frisbee models of applied research science.  


Final answer:

Basic research is driven by scientific curiosity, with the aim to enhance the understanding of fundamental principles. In the given choices, B) Experimenting to determine the fundamental properties of x-rays is an example of basic research, as it is looking to better understand these electromagnetic waves.

Explanation:

Basic research, also known as fundamental research or pure research, is designed to extend the knowledge base without a specific application in mind. It is driven by curiosity or interest in a scientific question. The aim is to increase understanding of fundamental principles and has the potential to lead to new inventions or technologies. In the given choices, an example of basic research would be B) Experimenting to determine the fundamental properties of x-rays. This study seeks basic understanding about the nature and properties of these electromagnetic waves, which is the very essence of basic research.

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Which vector should be negative?


any vector whose magnitude is less than 1


a displacement in the direction North


any vector whose magnitude is greater than 1


the velocity of a falling object

Answers

Answer: the velocity of a falling object.

As the object is falling down it is experiencing a velocity that is continuously reducing each second and becomes 0 once it reaches the ground. The graph between velocity and time in this case would be a negative slope.

Thus for a object falling down the velocity considered would be negative owing to the reducing speed.

Does radiation require a heated liquid to transfer energy?

Answers

well yes because it will rquerid to have heat

Answer:

Explanation: its false

Which vector should be negative?

Question 1 options:

any vector whose magnitude is less than 1


a displacement in the direction North


the velocity of a falling object


any vector whose magnitude is greater than 1

Answers

Answer:

 The velocity of a falling object

Explanation:

  The positive X axis is towards right and positive Y axis is towards up, so North direction is positive

  A vector with less than 1 magnitude is not negative, because its magnitude may be in between 0 and 1 which is positive vector.

  Any vector whose magnitude is greater than 1 is never be a negative vector.

  The velocity of a falling object is towards bottom, that is towards negative Y axis. So that vector is negative.

If the truck has a mass of 4,000 kilograms, what is its momentum? Express your answer in kg x m/s

Answers

Answer

0 kg m/s

Explanation

Momentum is a force that a thing has when it is moving which means when an object is moving only then it will have a non-zero momentum. If an object is stationary, then its momentum is zero.

Formula to calculate the momentum of a moving object multiply the mass of the object times it's velocity.

Momentum = Velocity * mass

Momentum = 0 m/s * 4000kg

Momentum = 0 kg m/s

The symbol for momentum is a small p.

The momentum is defined as the product of mass and the velocity of the body. The momentum of the truck will be zero.

What is momentum?

The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter p. It occurs due to the applied force. Its unit is Kg m/s².

The given data in the problem is;

v is the velocity of truck = not given

m is the mass of truck=4000 Kg

p is the momentum of the truck=?

We can not calculate the momentum of the body at rest. Because the momentum of the body at the rest will be zero.

Hence the momentum of the truck will be zero.

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

Mr. Harden's class decides to perform an experiment to determine how long it takes different objects to hit the floor when dropped from a desk. The class dropped three balls from a desk, one weighing 2 pounds, one weighing 4 pounds, and one weighing six pounds. It took them all the same amount of time to hit the floor. After evaluating these results, you predict that a 10 pound ball will take

A) more time to hit the floor.

B) less time to hit the floor.

C) about the same amount of time to hit the floor.

D) an unknown amount of time before hitting the floor.

Answers

B) less time to hit the floor bc 10 pounds is heavier than 2, 4, and 6 pounds (lbs.) which means that gravity would effect the 10 lb ball differently

Match the following vocabulary words with their definitions.
1. the decay of organic matter caused by microorganisms putrefaction
2. susceptible to decomposition by living organisms. refuse
3. waste biodegradable

Answers

Answer: (1) Putrefaction

              (2) Biodegradable

               (3) Refuse.

Putrefaction refers to decomposition of organic substances usually dead plants' and animals' bodies by microorganisms.

Therefore, it matches with first definition that states the decay of organic matter caused by microorganisms.

Biodegradable substances are decomposed by living organisms such as microorganisms.

Therefore, it matches with the second definition that states susceptible to decomposition by living organisms.

Refuse refers to something which is no longer useful.

Therefore, it matches with the third definition of waste.

Final answer:

The vocabulary words 'putrefaction', 'biodegradable', and 'refuse' are matched with their definitions related to decomposition and waste, with putrefaction being the decay of organic matter by microorganisms, biodegradable indicating that a substance can decompose by living organisms, and refuse meaning waste.

Explanation:

When matching the vocabulary words with their definitions, we relate terms to their respective meanings concerning the breakdown of organic material and waste management. Here are the correct matches:

Putrefaction is the decay of organic matter caused by microorganisms.Biodegradable refers to substances that are susceptible to decomposition by living organisms, such as decomposers.Refuse is synonymous with waste, which refers to materials that are discarded or rejected.

Decomposers, like bacteria and fungi, are vital because they break down dead organisms and wastes, transforming complex organic materials into simpler inorganic nutrients that can be reused by producers in the ecosystem. If a substance can be broken down by decomposers, it is termed biodegradable. Organic matter undergoes putrefaction as a result of microbial action, highlighting the role of decomposers in the natural recycling process.

What is the speed of a truck that travels 10 i’m in 10 minutes ?

Answers

10km/10min is a legitimate speed. So is meters/sec, km/hour (kph), etc.  

Kph is very common for vehicles:  

10 km/10 min (60 min/hr) = 60 kph

The kind of hazardous waste disposal that most closely resembles recycling is _____.

Answers

I believe your answer is Waste Exchange

How will the behavior of the gases in the piston chamber change if heat is applied to the system? Assume the piston moves to keep the pressure constant. A) The gas particles will speed up. B) More gas particles will be produced. C) Fewer gas particles will be produced. D) The kinetic energy will decrease.

Answers

A because with less space the gas particles will bounce of quicker increasing in speed

Answer: A) The gas particles will speed up.

Explanation: When heat is supplied to the system, the kinetic energy of the molecules increase and thus they start moving randomly and thus the gas molecules will speed up.

Charles law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

[tex]V\propto T[/tex]    (At constant pressure and number of moles)

As we know kinetic energy is directly related to temperature, thus as temperature is increased, the kinetic energy of the molecules also increase.

[tex]K.E=\frac{3}{2}RT[/tex]

R = gas constant

T= temperature

In the film, 2001: A Space Odyssey, astronauts travel through space and experience artificial gravity created by a spinning, cylindrical space station. In order to generate the same gravitational acceleration felt on Earth's surface, a space station rotates so that an astronaut standing inside its outer rim moves tangentially at 30.9 m/s. What is the diameter of the space station?

Answers

Artificial gravity is created by rotating the cylinder

So here we can say that the acceleration is due to centripetal acceleration

So here we know that the formula of centripetal acceleration is given by

[tex]a_c = \frac{v^2}{R}[/tex]

so here we know that

[tex]a_c = 9.8 m/s^2[/tex]

[tex]v = 30.9 m/s[/tex]

now we will plug in all values

[tex]9.8 = \frac{30.9^2}{R}[/tex]

[tex]R = \frac{30.9^2}{9.8}[/tex]

[tex]R = 97.43 m[/tex]

So above is the radius of the cylinder

Now to find the diameter

[tex]d = 2R[/tex]

[tex]d = 2*97.43[/tex]

[tex]d = 194.8 m[/tex]

so its diameter is 194.8 m

Final answer:

In order to generate the same gravitational acceleration felt on Earth's surface, the diameter of a spinning, cylindrical space station, around which an astronaut standing inside its outer rim moves tangentially at 30.9 m/s, should be approximately 194.36 meters.

Explanation:

The problem in question concerns the concept of artificial gravity and circular motion in physics. To answer this question, we would use the formula for the centripetal acceleration in circular motion, which is a = v² / r, where v = velocity (30.9 m/s) and r = radius of the circle (the part we are trying to find). We equate this to g, the acceleration due to gravity on earth, which is 9.81 m/s². This gives us the equation 9.81 m/s² = (30.9 m/s)² / r. Solving for r gives us r = (30.9 m/s)² / 9.81 m/s² = 97.18 m. This is the radius. But we need the diameter of the space station, so we multiply the radius by 2, giving us a diameter of approximately 194.36 meters.

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If you toss a coin straight upward in train that gains speed while the coin is in the air, the coin will land?

Answers

The coin tossed straight upward on a train that is accelerating will land back in your hand, retaining its initial horizontal velocity and moving forward with the train due to Newton's first law of motion and the principle of relative motion.

If you toss a coin straight upward on a train that gains speed while the coin is in the air, the coin will still land back in your hand, provided there is no significant air resistance inside the train and you do not move from your spot. This is because when the coin is tossed, it already has the horizontal velocity of the train. As per Newton's first law of motion, objects in motion stay in motion with the same velocity unless acted upon by an unbalanced force.
Therefore, even though the train is accelerating, the coin retains its initial horizontal velocity and moves forward with the train.

An important concept to take note of here is the principle of relative motion. To an observer inside the train, the coin appears to move straight up and down because both the observer and the coin are sharing the same initial horizontal velocity due to the motion of the train. To an observer outside the train, the coin would appear to be following a projectile motion pathway, because they can see both the vertical and the accelerated horizontal motion of the coin. However, since the internal movement of the coin and the observer are both relative to the moving train, the coin will land back in the hand from which it was tossed, assuming the hand remains in the same position relative to the train.

What energy is being transformed an electric blanket warms a bed on a chilly night

Answers

Final answer:

Electrical energy is transformed into thermal energy by an electric blanket to warm a bed. The electric current passes through a heating element in the blanket, where the resistance generates heat to provide warmth.

Explanation:

When an electric blanket warms a bed on a chilly night, electrical energy is being transformed into thermal energy. This process involves the conversion of electricity into heat through the use of a heating element within the blanket. As electricity flows through the heating element, the resistance of the material converts electric energy into heat, which then warms up the bed. This is an example of energy transformation where the desired output is the warming effect, even though some energy may be lost to the environment as part of this process.

Electric blankets are designed to be energy efficient, ensuring that the majority of electric power is converted into heat to keep users warm. This functionality is similar to other devices that transform energy into heat, such as space heaters or waterbed heaters. However, it's worth noting that no process is 100% efficient, and some energy will be lost in the form of waste heat.

what are chemical properties

Answers

Cacu. H2SO.chemical properties related to the used in chemical property

Answer:

It is a characteristic of matter that describes its ability to change into a different substance.

Explanation:

A museum curator moves artifacts into place on many different display surfaces. Consider the following table giving approximate values for coefficients of friction: – schomer – (HHSPhy4F18) 1 Materials μs μk steel on steel 0.74 0.57 aluminum on steel 0.61 0.47 rubber on dry concrete 1.0 0.8 rubber on wet concrete – 0.5 wood on wood 0.4 0.2 glass on glass 0.9 0.4 waxed wood on wet snow 0.14 0.1 waxed wood on dry snow – 0.04 metal on metal (lubricated) 0.15 0.06 ice on ice 0.1 0.03 Teflon on Teflon 0.04 0.04 synovial joints in humans 0.01 0.003 What is Fs,max for moving a 167 kg alu- minum sculpture across a horizontal steel platform? The acceleration of gravity is 9.81 m/s2 . Answer in units of N.

Answers

you must give a force for just moving  

Fmax=151*0,61*9,81= 904 N <--------------  

and  

F=151*0.47*9.81= 646 N ... to keep in motion

hope this helps :)

Final answer:

To calculate the maximum static friction (Fs,max) that can be experienced by the 167 kg aluminum sculpture on a steel surface, we first find the normal force by multiplying its mass with acceleration due to gravity. Using the coefficient of static friction for aluminum on steel, we can then calculate Fs,max.

Explanation:

The maximum static friction (Fs,max) that can be experienced by the 167 kg aluminum sculpture on a steel surface can be calculated using the formula of friction. Friction's direction is always opposite of the motion and it is usually dependent on the materials in contact and the normal force. The normal force (N) in this case would be equal to the weight of the sculpture which can be calculated by multiplying its mass (m) with the acceleration due to gravity (g). That is, N = mg = (167 kg)(9.81 m/s²).

Once the normal force is known, the next step is to find the maximum static friction (Fs,max) using the equation: Fs,max = μsN. The coefficient of static friction (μs) between aluminum and steel is given as 0.61 from the provided data. Hence, we can substitute the values in the formula to find the desired value.

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Charlie throws a ball up into the air. While the ball is airborne, which is the greatest force acting on the ball to slow it down? A. applied force B. friction force C. gravitational force D. normal force

Answers

C gravitational force

Answer:

it is gravitational force

Explanation:

i did the test is the pretest of force and motion trust me its right

Mark creates a graphic organizer to review his notes about electrical force.


Which labels belong in the regions marked X and Y?

A) X: Decreasing to half will quadruple force
Y: Doubling will double force
B) X: Doubling will cut force in half
C) X: Doubling will double force
Y: Decreasing to half will quadruple force
D) X: Decreasing to half will double force
Y: Doubling will cut force in half

Answers

A) X: Decreasing to half will quadruple force

Y: Doubling will double force

The regions marked X and Y will be given as

X: Decreasing to half will quadruple the force

Y: Doubling will double force

What is electrical force?

The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force. Although the law was known earlier, it was first published in 1785 by French physicist Charles-Augustin de Coulomb, hence the name.

Coulomb's law was essential to the development of the theory of electromagnetism, maybe even its starting point,[1] as it made it possible to discuss the quantity of electric charge in a meaningful way.

The law states that the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Hence the regions marked X and Y will be given as

X: Decreasing to half will quadruple the force

Y: Doubling will double force

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Which government agency is responsible for protecting the nation’s transportation systems to ensure freedom of movement for passengers and commerce? A. Environmental Protection Agency B. Federal Communications Commission C. Occupational Safety and Health Administration D. Transportation Security Administration
economics high school level.

Answers

The correct answer is D. Transportation Security Administration.


-Willow I know U might not bealive me but I am Correct.

And here Is my Proof. They are an agency that organizes numerous things that are related to transportation security. Among other things, they regulate things such as quality of roads or railroads, or they participate in establishing safety standards for various types of vehicles, from cars to boats and airplanes and trucks, and they do various other things.



Answer:

D.

Explanation:

The part of an atom that is most empty space is the ?

Answers

the space between the electrons

An electric force exists between which pair of objects? Check all that apply.

A) a neutral object and a negative object
two negative objects
B) a neutral object and a positive object
C) two positive objects
D) a negative object and a positive object
E) two neutral objects

Answers

An electric force exists between the following:

-Two negative objects

-Two positive objects

-A negative object and a positive object

Final answer:

Electric forces exist between charged objects. Therefore, two negative objects, two positive objects, and a positive and a negative object all experience electric force. However, under certain conditions, a neutral object and a charged object may also experience electric force.

Explanation:

An electric force exists between objects with charge. So, the correct pairs from your options that will experience electric force are: two negative objects (since like charges repel), two positive objects (as these also repel each other) and a negative object and a positive object (because opposite charges attract each other).

A neutral object and a positive object, as well as a neutral object and a negative object, may also experience electric force due to induced charges under certain conditions. However, two neutral objects will not experience electric force as they do not have charge.

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Whats the formula for distance if i have time, acceleration and speed

Answers

If time (t), acceleration(a) and  initial velocity (Vi)  is given distance can be find by

S = (Vi)t + (1/2) at²

If both velocities initial velocity an final velocity is given then formula will be

2aS = (Vf)²- (Vi²)

Where S is the distance.


Speed = Distance/ Time.

For example: A car travels for 30 miles and it takes 2 hours. What speed was the car moving at?
I always convert my time into seconds unless the question says something else.
120 X 60 =7,200
30/7200 = 0.00416667

What is the maximum height achieved if a 0.600 kg mass is thrown straight upward with an initial speed of 75.0 m·sâ1? ignore the effect of air resistance?

Answers

Final answer:

A 0.600 kg mass thrown upward with an initial speed of 75.0 m/s will reach a maximum height of approximately 287.76 meters, ignoring the effects of air resistance. This is determined using the physics formula v² = u² + 2gH (a kinematic equation for motion under gravity).

Explanation:

This problem can be solved using the physics concept of motion under gravity. The object is thrown with an initial velocity to reach a maximum height where its velocity becomes zero. In order to find out the maximum height (H) achieved, we can use the kinematic equation: v² = u² + 2gH, where 'v' is the final velocity, 'u' is the initial velocity, and 'g' is the acceleration due to gravity.

Given in the problem, u = 75 m/s (upward direction implies positive value), v = 0 m/s (at maximum height, the final velocity is zero), and g = -9.8 m²/s (downward direction implies negative value).

By substituting these values into the equation, we get 0 = (75 m/s)² + 2(-9.8 m²/s)(H), which yields H = (75 m/s)² / 2(9.8 m²/s) or approximately 287.76 meters.

This means that, ignoring air resistance, an object with a mass of 0.600 kg thrown upward with an initial speed of 75.0 m/s will reach a maximum height of approximately 287.76 meters.

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how hard is it to cut through steel with a plastic knife

Answers

Hey there!

You cannot cut through steel with a plastic knife. As fun as it sounds, it is not a good idea to try, and 99.9% of the time it would not work.

Hope this helps!

It is impossible to cut through steel with a plastic knife because steel is much harder than plastic, and trying to do so could lead to injury.

Steel is a very hard material that requires special tools to cut through effectively due to its high hardness level. Plastic knives are not capable of cutting through steel because they are not hard or sharp enough to overcome the material's resistance. Therefore, It is virtually impossible to cut through steel with a plastic knife due to the significant difference in hardness between the two materials. The hardness of a material dictates how resistant it is to being scratched or cut. For example, steel used in a pocketknife blade has a hardness value of around 5.5, which is considered sufficient to separate between hard and soft minerals. On the other hand, plastics used for items such as plastic cutting boards or plastic knives are much softer.

Objects in free fall accelerate due to ______

A. Gravity

B. Momentum

C. Energy

D. Velocity

Answers

Answer:

The correct answer is A.

Objects in free fall accelerate due to gravity.

Explanation:

Momentum can help an object to keep its state of motion at a constant velocity when no external force is applied. It can never accelerate the object.

According to the laws of motion, we know that acceleration is produced in a body only when a Force is applied in the direction of motion of body.

During a free fall, only the force of gravity is acting on an object and that too in the direction of its motion. Hence, the acceleration produced in a free falling object is due to gravity.

Answer:

gravity

Explanation:

Soils refers to natural material from the earth, but not artificial material (like AstroTurf or asphalt). True False

Answers

Answer:

It is true that Soil refers to natural material from the earth, but not artificial material (like AstroTurf or asphalt).  

Artificial materials are the materials that are made by human like AstroTurf or asphalt  while Soil is one of the natural materials giving to us by God. Soil is a material composed of five ingredients which are minerals, soil organic matter, living organisms, gas, and water.

 

How does mass affect the time it takes an object to hit the ground?

Answers

For an ideal condition The Mass does not  affect the time taken by an object to hit the ground.

As the ground attracts all object with the same acceleration due to gravity 9.8 m/s². so all objects that  drop from a certain height hit the ground at same time .

But in real condition there is air resistance present ,due to which objects of different masses take different time to hit the ground.

If the mass is greater it should take less time to hit the ground due to Gravitational Potential Energy. The smaller the mass the more time it should take to hit the ground.

Use Einstein’s energy equation to solve the following problem. Recall that the speed of light is 3 x 108 m/s. If a 5.0-kg stone is completely converted to energy, what is its energy equivalent in joules?

Answers

E =mc²

   = (5.0-kg)(3 x 10^8 m/s)²

   = (5.0-kg) (9×10^16m²/s²)

   E =4.5×10^17 J

Answer:

Its energy equivalent in Joules is

E = 4.5 × 10^17Joules

Explanation:

The Einstein energy equation is expressed as shown

E = mc² where:

m is the mass of the stone

c is the speed of light

Given:

m = 5.0kg

c = 3 x 10^8 m/s

E = 5×(3 x 10^8)²

E = 5×(9×10^16)

E = 45 × 10^16

E = 4.5 × 10^17Joules

What is the maximum speed with which a 1200-kg car can round a turn of radius 88.0 m on a flat road if the coefficient of static friction between tires and road is 0.40?

Answers

Answer:

18.6 m/s

Explanation:

The frictional force acting on the car is given by:

[tex]F_f = \mu m g=(0.40 )(1200 kg)(9.81 m/s^2)=4709 N[/tex]

But the frictional force also corresponds to the centripetal force that keeps the car in circular motion in the turn:

[tex]F_f = F_c = m \frac{v^2}{r}[/tex]

Where v is the maximum speed the car can achieve remaining in the turn. Substituting r=88.0 m and re-arranging the formula, we can find the value of v:

[tex]v=\sqrt{\frac{Fr}{m}}=\sqrt{\frac{(4709 N)(88.0 m)}{1200 kg}}=18.6 m/s[/tex]

Final answer:

The maximum speed a 1200kg car can round a turn of radius 88m on a flat road given a friction coefficient of 0.40, is around 18.7m/s. This considers the principles of centripetal force and static friction with the assumption of an ideal case scenario.

Explanation:

This problem is a physics scenario that involves centripetal force and static friction. The maximum speed can be calculated using the formula for the centripetal force (F), which in this case is provided by the static friction: F = μN, where μ is the friction coefficient and N is the normal force. In a situation where a car is rounding a turn on a flat road, the normal force N equals to the weight of the car, which is mass (m) times gravity (g). Thus, the equation F = μmg can be used to solve for the centripetal force. The centripetal force equation on the other hand is F = mv² / r, where m is the mass of the car, v is the speed of the car, and r is the radius of the turn. Equating these two equations gives μmg = mv² / r. The mass cancels out resulting to v = sqrt(μgr). Substituting the given values results to maximum speed, v, which is around 18.7 m/s.

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Cardiovascular Activities all have what 4 characteristics

Answers

fast moving and long intervals , light but quick movements, usually with light weight

Final answer:

Cardiovascular activities are characterized by significant cardiac output, compliance, volume of the blood, and viscosity of the blood. These activities affect how much blood the heart pumps, and can contribute to overall heart health.

Explanation:

Cardiovascular activities are characterized by four primary attributes. First, they involve a significant Cardiac Output, which is the volume of blood the heart pumps per minute. Second, they incorporate varying levels of Compliance, referring to the ability of a vessel to stretch and increase its volume with increasing transmural pressure. The third characteristic is the Volume of the Blood in the body, meaning that cardiovascular activities affect how much blood the heart pumps with each beat. The final characteristic is the Viscosity of the Blood, which refers to the thickness and stickiness of the blood, a factor that can impact blood flow and pressure. Participating in regular cardiovascular activities can help maintain and improve these factors, contributing to overall heart health.

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