Answer:
(a) 42 N
(b)36.7 N
Explanation:
Nomenclature
F= force test line (N)
W : fish weight (N)
Problem development
(a) Calculating of weight of the heaviest fish that can be pulled up vertically, when the line is reeled in at constant speed
We apply Newton's first law of equlibrio because the system moves at constant speed:
∑Fy =0
F-W= 0
42N -W =0
W = 42N
(b) Calculating of weight of the heaviest fish that can be pulled up vertically, when the line is reeled with an acceleration whose magnitude is 1.41 m/s²
We apply Newton's second law because the system moves at constant acceleration:
m= W/g , m= W/9.8 , m:fish mass , W: fish weight g:acceleration due to gravity
∑Fy =m*a
m= W/g , m= W/9.8 , m:fish mass , W: fish weight g:acceleration due to gravity
F-W= ( W/9.8 )*a
42-W= ( W/9.8 )*1.41
42= W+0.1439W
42=1.1439W
W= 42/1.1439
W= 36.7 N
When the fishing line is reeled in at constant speed, it can support a fish with a weight of 42.0 N. But when there's an upward acceleration of 1.41 m/s², the line can only support a fish with a weight of about 33.7 N.
Explanation:The subject in question here relates to the physics topic of forces, specifically concerning gravitational pull and tension. Now, let's address the two cases.
(a) When the fisherman reels in the line at a constant speed, there is no acceleration. Therefore, the tension in the line equals the weight of the fish. If the line can withstand a force of 42.0 N, the maximum weight of a fish that the line can support is the same—42.0 N (remember that weight is a force measured in Newtons [N]).
(b) If the fisherman is reeling in the line with an upward acceleration of 1.41 m/s2, the tension in the line will be the weight of the fish (m*g, where m is the mass of the fish and g is the gravity 9.8 m/s2) plus the result of the mass and acceleration of the fish (m*a). So, the tension T can be expressed as:
T = m*g + m*a
Since the maximum tension that the line can withstand is 42.0 N, we can determine the maximum mass fish that can be caught. Let's let the maximum mass be 'M'.
Therefore:
42.0 N = M * 9.8 m/s2 + M * 1.41 m/s2
After calculating this, you'll find that M ≈ 3.44 kg. However, we require the weight, which can be calculated by multiplying the mass by gravitational pull - hence, ≈ 3.44 kg * 9.8 m/s2 = ≈ 33.7 N.
In conclusion, under constant speed, the fisherman can pull up a fish of approximately 42.0 N, but when accelerating, the bridge fishing line can only support a fish of about 33.7 N without breaking.
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What formula gives the strength of an electric field, E, at a distance from a known source change?
A) E= Fe/qd
B) E= kq/d
C) E= kq/d^2
D) E= Fe/d
C) E= kq/d^2
Hoped this helped
Answer:
The correct answer option is C. E = kq / d^2
Explanation:
Electric field strength is a vector quantity which means it has both the magnitude and a direction.
It can be defined as the strength of electrical force per unit charge at any given point in the electric field and can be denoted by E.
Therefore, the formula for the electric field strength is:
E = [tex]\frac{k .Q }{d^2} [/tex]
The path followed by a projectile is called its _____.
A. projectile motion
B. projectile path
C. trajectory
D. path of motion
The path followed by a projectile is called its trajectory. (C)
In the most common school situation ... with gravity but without air resistance, the trajectory of a projectile is the shape of an inverted parabola (nose pointing up). That's the result of constant horizontal velocity and accelerated vertical velocity.
Answer:
Trajectory
Explanation:
Trajectory is the path followed or traced by a projectile.
It follows a parabola shape. That is the shape got in javeline.
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
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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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.
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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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.
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.
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what happens when you add heat to a substance ?( think of the kinetic theory of matter)
Hello I need help! Don't have to say the answer, I just want to know how to solve it or the formula pretty please! Thanks
A camera falls from a blimp that is 568 m
above the ground and rising at a speed of
10.6 m/s.
Find the maximum height reached by the
camera with respect to the ground. The acceleration
of gravity is 9.8 m/s^2.
Answer:
Maximum height reached = 573.73 m
Explanation:
We have equation of motion, [tex]v^2=u^2+2as[/tex], where u is the initial velocity, u is the final velocity, s is the displacement and a is the acceleration.
Here final velocity = 0 m/s at maximum height, initial velocity = 10.6 m/s, acceleration = acceleration due to gravity = [tex]-9.8m/s^2[/tex]
Substituting
[tex]0^2=10.6^2-2*9.8*s\\ \\ s=5.73 m[/tex]
So camera travels 5.73 m above after falling from blimp.
Maximum height reached = Initial height + 5.73 = 568+5.73 = 573.73 m
In baseball, a home run means the batter has hit the baseball into the stands, beyond the baseball field. Compare the force of the batter when bunting the ball into the in-field versus hitting a grand slam.
The force is much less when bunting into the in field.
Answer:
The force is much less!
Explanation:
HURRY PLS!!! Carla draws two circuit diagrams that connect the same components in different ways, as shown. Which statements about the circuits are correct? Check all that apply.
Circuit A is a series circuit.
Circuit B is a series circuit.
The bulbs in Circuit A shine brighter than those in Circuit B.
The total resistance in Circuit A is greater than that in Circuit B.
When a bulb in Circuit B goes out, the other bulbs go out.
When a bulb in Circuit A goes out, the other bulbs keep shining.
A series circuit is a closed circuit in which the current follows in only one path. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load. If one component of a series circuit becomes nonfunctional, the rest of components do not work. So the circuit A is a series circuit.
Explaining the second statement :
Each resistor in a series circuit has the same amount of current flowing through it, whereas the current flowing through each resistor in a parallel circuit is different, depending on the resistance. So we can say that when resistors are connected in parallel, more current flows from the source than flow for any of them individually, so the total resistance is lower.
Series circuit has the summation of all resistances. Therefore, Circuit A is a series circuit, and also the total resistance in Circuit A is greater than that in Circuit B.
What is an Electrical circuit?The combination of various electrical components in a definite form, to allow the flow of electric current through it, is known as an electrical circuit.
Given data -
Carla draws two circuit diagrams that connect the same components in different ways.
A series circuit is a closed circuit in which the current follows in only one path. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load. If one component of a series circuit becomes nonfunctional, the rest of the components do not work. So circuit A is a series circuit.
The resistors in a series circuit have the same amount of current flowing through it, whereas the current flowing through each resistor in a parallel circuit is different, depending on the resistance. When resistors are connected in parallel, more current flows from the source than flow for any of them individually, so the total resistance is lower.
Thus, we can conclude that Circuit A is a series circuit, and also the total resistance in Circuit A is greater than that in Circuit B.
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this is a Physics worksheet. please help.
i think the answer is A
For the stunt car, additional measurement of the angle of projection and air resistance are required for accurate prediction. In the case of vector quantity of A, using Pythagorean theorem and trigonometric calculations, it would be 5cm at a certain angle according to the coordinate system.
The first question involves the physics of projectile motion. Based on the given parameters (height of the cliff, speed of the car leaving the cliff, and the mass of the car), the stunt coordinator still needs to collect more measurements.
The missing parameters are the angle at which the car leaves the cliff and the air resistance, which can be a major factor in the car's trajectory, particularly in a high-speed situation like this. Without these, it's impossible to accurately predict where the car will land.
As for the second question, which involves vector quantities, vector A’s magnitude can be realized by Pythagorian theorem.
Given that the x-component is 3 cm and the y-component is 4 cm, the magnitude of A is √(3² + 4²), which is 5 cm, providing a vector quantity of 5 cm at an angle. The specific angle depends on the orientation of the coordinate system but can be calculated using trigonometric functions.
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What kinds of birds visits you a feeder at different times a year
Purple finches, chickadees,cardinals,blue jays,woodpeckers,red polls,juncos,goldfinches,and red crossbills.
The bar graph shows the population of male and female deer in a forest, measured in 10-year intervals. According to the graph, which of these statements is true about the trends?
Answer: option D. the ratio of the population of male deer is not constant.
Explanation:
The bar graph permits to compare the results for two different populations: male and female deer in a very easy visual way.
These features are remarkable:
This discards the option A, which states that the population of male deer increases each decade from 1961 to 2011.
This discards the option B. which states that when the polulation of male deer increases, the poluplation of female deer also increases.
Answer:
The answer is D
Explanation:
I got it right
Which of these would be a good model to demonstrate the fact that the galaxies are moving apart as the universe is expanding?
A) The spots on the balloon move away as the balloon is inflated
B) Dust particles move around in random directions
C) Pieces of paper scatter in random directions in the wind
D) Cars travel down a highway in forward motion.
Answer: Option A: The spots on the balloon move away as the balloon is inflated.
one of the scientific models describes the galaxies are moving apart as the universe is expanding. This expansion theory came from the observation of red-shifted spectrum from all the directions indicating that the galaxies are moving away. This can be understood from the inflated balloon. Initially spots can be marked using a colored pen on the balloon.On inflating the balloon, it would be noticed that the spots on the balloon move away. Actually the position of the spots won't change, but the distance between the spots would expand. This is a good model to explain the expanding universe. The galaxies are neither moving in any random direction nor moving forward. So, rest of the options are not good models to explain the theory.
What happens to the magnetic field of a wire when you change the direction of the current of the wire
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?
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]
The form of energy that can move from place to place across the universe is . On Earth, the main source of this energy is .
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.
carbon monoxide pure substance or mixture and why
for this velocity-time graph in which time interval is the object moving toward the reference point?
A. 7 to 11 s
B. 0 to 6 s
C. 11 to 20 s
D. 6 to 7 s
Answer:
D. 6 to 7 s
Explanation:
When object is moving away from its reference point then its motion is known as positive motion
And when object moves towards the reference point then its motion is termed as negative motion because here the distance with respect to reference point is decreasing with time
so by the graph we can say that
object velocity is positive between
t = 0 to t = 6 s and t = 12 to t = 20 s
so in above interval of time it is moving away
while during time interval of t = 6 s to t = 7 s the motion its velocity is negative and hence it will move towards reference point
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.
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].
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.
Which type of circuit is a continuous loop that allows the flow of current along its intended path?
A) open
B) inverted
C) closed
D) short
A C) closed circuit is a continuous loop that allows the flow of current along its intended path.
A continuous loop that allows the flow of current along its intended path is closed circuit. The correct option is C.
What is circuit?A circuit consists of a voltage source along with resistors and the current flows from positive to the negative terminal of the battery.
When the circuit is open , there will be no current flowing in the circuit, but if closed, there will be continuous flow of current.
Thus, the correct option is C.
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Household Paint Is it a pure substance or a mixture and why
Tell me one way compound and elements are similar & one way compounds and elements are different
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
PLZ help!
Which vector should be negative?
Question 1 options:
any vector whose magnitude is greater than 1
any vector whose magnitude is less than 1
the velocity of a falling object
a displacement in the direction North
Question 2 (1 point) Question 2 Unsaved
A worker pushes a large rock to the north while another worker helps by pushing it to the east. If they both exert equal force, in what direction does the rock move?
Question 2 options:
northeast
southwest
north
east
Question 3 (1 point) Question 3 Unsaved
At take off, a plane flies 100 km north before turning to fly 200 km east. How far is its destination from where the plane took off?
Question 3 options:
224 km
200 km
300 km
173 km
Question 4 (1 point) Question 4 Unsaved
A runner traveled 15 kilometers north then backtracked 11 kilometers south before stopping. His resultant displacement was
Question 4 options:
4 kilometers south
26 km south
26 km north
4 kilometers north
4 Kilometers, North, would be the answer.
carbon monoxide pure substance or mixture and why
A person throws tennis ball 6m/s straight up. How long does it take for it to come back to their hand?
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?
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.
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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Determine whether the material is a rock or mineral based on the description.
Description:
It often has molten appearance due to its heterogeneous composition.
Rock or mineral:
It is a rock.
Mineral has a unique specific makeup and always has the same composition.
So it is rock due to heterogeneous composition.
Part 2.Description:
Atoms in all specimens have the same structure and shape.
Rock or mineral:
It is Mineral.
Mineral has a unique specific makeup and always has the same composition.
Part 3.Description:
It is generally found in crystalline form.
Rock or mineral:
It is a mineral.
Part 4.Description:
Every specimen varies in terms of atomic structure.
Rock or mineral:
It is a rock.
A rock is a solid, inorganic, naturally-formed substance without a particular atomic structure or chemical composition.
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
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.
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
#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
Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. She placed them on a windowsill in the sun for an hour and then measured the warmth of the air in each box. In this experiment, the warmth of the air is a(n) _____________.
A
Independent variable
B
Constant
C
Control
D
Dependent Variable