6. A car moving at 30m/s comes to a stop steadily as a result of braking. A second car moving at 30m/s breaks quickly before coming to a stop. a. for the two cars, compare: i. The force exerted by the pads on each car on the rotors ii. The heat dissipated in the rotors

6. A car moving at 30m/s comes to a stop steadily as a result of braking. A second car moving at 30m/s breaks quickly before coming to a stop. a. for the two cars, compare: i. The force exerted by the pads on each car on the rotors ii. The heat dissipated in the rotors

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 51PE: Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity....

See similar textbooks

Related questions

Q: How much thermal energy is required to increase the temperature of a 390.00g sample of water from…

A: Given data: Mass (m) = 390.00 g = 390.00×10-3 kg Initial temperature (T0) = 15.00°C Final…

Q: Which equation correctly relates the current to the voltage in a simple circuit? A I=RV B…

A: Required: The relationship between current and voltage in a simple circuit

Q: A son disk of mass equal to 7.0 kg and radius of 30 cm changes its rotations gradually from 45 rpm…

Q: 6) A string is attached to a vibrator driven at 1.20 x 102 Hz. A weight hangs from the other end of…

A: Given: The frequency at which the vibrator is driven: f = 1.20 x 102 Hz. The tension in the string…

Q: The container shown is filled with mercury. It is open to atmosphere on the left and closed on the…

A: Pressure is a function of depth and increases with depth.. At the same depth the pressures are…

Q: Explain why two parallel wires carrying current in opposite directions repel each other.

Q: Submarines need to be extremely strong to withstand the extremely high pressure of water pushing…

Q: A yoyo with mass M = 0.2 kg and radius R = 0.1 m, when it rolls down has a string tension T. If the…

A: The motion of an object around a circular path in a fixed orbit is known as rotational motion. The…

Q: A spring has spring constant k and a 0.40 kg mass attached to its end, which has a maximum speed of…

A: Given data: Mass (m) = 0.40 kg Maximum speed (vmax) = 2.5 m/s Amplitude (A) = 1.8 m Required: The…

Q: 2) Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by…

A: Given That Length of the board = 4.0m Mass Of the Board =…

Q: 6. If 1 kg of boiling water is mixed with 1 kg of oil at 20°C, at what temperature do they equalize?…

Q: The average intensity of light emerging from a polarizing sheet is 0.753 W/m², and that of the…

A: Given data: The intensity of emerging light (I) = 0.753 W/m2 The intensity of incident light (I0) =…

Q: Suppose a photon has a momentum of 5.4 × 10-29 kg⋅m/s. A. What is the wavelength of such a photon…

A: Given data: The photon, P=5.4×10-29 kg.m/s

Q: A circular brass plate has a diameter of 2.43 cm at 20°C. How much does the diameter of the plate…

Q: A leaf of length his positioned d= 70.3 cm in front of a converging lens with a focal length of 34.0…

A: Given data: The focal length, f=34.0 cm=0.34 m The object distance, u=d=70.3 cm=0.703 m

Q: 5. In the lecture, I described Joule's use of an electric generator to heat a mass of water. Instead…

A: a) Current through the circuit I=VR=123= 4 amps

Q: An object is moving with velocity (in ft/sec) v(t)=t2−16v(t)=t2-16. Find the displacement and total…

Q: 4. A uniform line charge of density p=1.5uC/m is arranged in the form of a square 8m on a side in…

A: It is given that the line charge density is ρl=1.5 μC/m. The diagram is shown below:

Q: equilateral triangle with a side length of 30cm, two electric charges of the same magnitude of 0.9…

Q: A 23-turn circular coil of wire has diameter 0.99 m. It is placed with its axis along the direction…

A: Given Data:- Number of turns in the coil is N=23 Diameter of the coil is d=0.99 m Magnetic field…

Q: Question 4: You just boiled an egg (it still has its shell) and you want to eat it up fast but it is…

Q: Which action would require no work to be done on an object? O pushing the object along a horizontal…

A: Required: The action in which no work to be done on an object

Q: d) A projectile is fired with v, = 25 m/s and angle = 45°. Therefore, calculate the followings: Draw…

Q: Consider a 280-m2 black roof on a night when the roof’s temperature is 30.5°C and the surrounding…

A: Given data, Area A=280 m2 Roof temperature Tr=30.5 °C=303.5 K Surrounding temperature Ts=14.5…

Q: A conical pendulum consists of a mass, m, at the end of a length of an ideal rope of length l that…

Q: In the figure, block 1 has mass m₁ = 440 g, block 2 has mass m₂ = 570 g, and the pulley is on a…

A: Part (d) The formula for the angular acceleration of the pulley is given by, α=ar Here, a is the…

Q: 27. Find the direction of the force acting on the pin, o = ?

A: Given data,

Q: Show for the body-centered cubic crystal structure that the unit cell edge length a and the atomic…

Q: a box with the mass m = 2.60 kg, starting from rest, falls a vertical distance h = 55cm before…

Q: A capacitor has a peak current of 330 μA when the peak voltage at 330 kHz is 2.8 V. Part A What is…

Q: Given S.= 1.65 cm and si = 6.00 cm, find f

A: Given, S0 = 1.65 cmSI = 6.00 cmUsing mirror formula , 1f =1S0+1SI

Q: The average human body temperature is 98.6°F. According to ________ law, if your body temperature…

Q: 1. A Roller Coaster showing in the picture bellow of mass of M = 149 Kg is moving through the 3…

Q: What is the ratio (in cm) of the Volume to the Surface Area of a Cube of side 5.9 cm?

A: Given data: A cube The side of the cube (s) = 5.9 cm Required: The ratio of the volume to the…

Q: A passenger train massing 1.5 x 10^7 kg coasts up a slope rising at an angle of 25° above the…

A: Mass of train =1.5×107kg Slop=25° Intial speed =120km/h =33.33m/s Final speed =0

Q: Select the defraction limit for an optical imaging system whose collection optics have a NA of 1.00,…

A: The given data we have: NA=1.00 λ=500nm The objective is to calculate the diffraction limit.

Q: What fraction of the total volume of an iceberg is exposed above the surface of the ocean? DATA for…

Q: Ahockey puck of mass 322 g is siding due east on a fictionless table with a speed of 150 ms…

Q: A hollow sphere (M = 3.0 kg and R = 60 cm ) is rolling down an inclined surface with a height of 2.0…

Q: how do we figure out Step 1

A: The Hubble time is given by t=1H0. H0 is the Hubble constant.

Q: If the swimmer could cross the English Chanel (32km) maintains the same velocity as for the first 50…

A: Given : Width of the canal,d=32 km=32000 m Pool's length d'=50 m Average velocity,dv=2.08 m/s (as…

Q: How far in meters can a runner running at 3.2 m/s run in the time it takes a rock to fall from rest…

A: Given data: The speed, v=3.2 m/s. The height, h=176.2 m.

Q: 1) A sinusoidal electromagnetic wave is propagating in vacuum. At a given point the intensity of the…

A: GivenIntensity, I=0.45 W/m2fromula that we will be using isI=εoEo2c2

Q: Identify an everyday application of ultraviolet waves.

A: Ultraviolet Rays the Electromagnetic waves with wavelength range of 100nm to 400nm.

Q: Customers take plates from the cart described above. As a result, the spring moves up to be…

Q: A car traveling at 3.2 m/s accelerates at 1.1 m/s2 for 5.5 seconds. How far in meter does it travel?

A: Given data: Initial velocity (u) = 3.2 m/s Acceleration (a) = 1.1 m/s2 Time (t) = 5.5 s Required:…

Q: available cultivating crops A, B, and C. He has a total of $11,200 for cultivation costs and a…

A: Given thattotal land, L=400 acrestotal money, M=11,200 dollarstotal labour hour, H=13,200 hours

Q: A solenoid is designed to produce a magnetic field of 3.40x10-2 T at its center. It has a radius of…

Q: 4. This Olympic skeleton athlete slides down an icy track head first. The track has many twists and…

A: The total energy at the top will be the potential energy of the athlete. The athlete needs to…

Q: The focal length of a lens is 5.00 cm. How fare from the lens must the object be to produce an image…

A: The distance between the lens and the image sensor when the subject is in focus is known as the…

Question

Please answer in 30 min. I will upvote.

6. A car moving at 30m/s comes to a stop steadily as a result of braking. A second car moving at 30m/s breaks quickly before coming to a stop.
a. for the two cars, compare:
i. The force exerted by the pads on each car on the rotors
ii. The heat dissipated in the rotors

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

(a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done on the lift by the gravitational force in this process? (c) What is the total work done on the lift?
(a) How long can you play tennis on the 800 kJ (about 200 kcal) of energy in a candy bar? (b) Does this seem like a long time? Discuss why exercise is necessary but may not be sufficient to cause a person to lose weight.
. The fastest that a human has run is about 12 m/s. (a) If a pole vaulter could run this fast and convert all of her kinetic energy into gravitational potential energy, how high would she go? (b) Compare this height with the world record in the pole vault.
A system consists of three particles, each of mass 5.00 g, located at the corners of an equilateral triangle with sides of 30.0 cm. (a) Calculate the gravitational potential energy of the system. (b) Assume the particles are released simultaneously. Describe the subsequent motion of each. Will any collisions take place? Explain.
Integrated Concepts (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2 against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?
Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity. Suppose a person shoveling a footpath metabolizes food at the rate of 800 W. (a) What is her useful power output? (b) How long will it take her to lift 3000 kg of snow 1.20 m? (This could be the amount of heavy snow on 20 m of footpath.) (c) How much waste heat transfer in kilojoules will she generate in the process?
A student has the idea that the total work done on an object is equal to its final kinetic energy. Is this idea true always, sometimes, or never? Ii it is sometimes true, under what circumstances? If it is always or never true, explain why.
During a stress test of the cardiovascular system, a patient walks and runs on a treadmill, (a) Is the energy expended by the patient equivalent to the energy of walking and running on the ground? Explain, (b) What effect, if any, does tilting the treadmill upward have? Discuss.
Under normal conditions the human heart converts about 13.0 J of chemical energy per second into 1.30 W of mechanical power as it pumps blood throughout the body. (a) Determine the number of Calories required to power the heart for one day, given that 1 Calorie equals 4 186 J. (b) Metabolizing 1.00 kg of fat can release about 9.00 103 Calories of energy. What mass of metabolized fat would power the heart for one day?
(a) How long can you rapidly climb stairs (116/min) on the 93.0 kcal of energy in a 10.0-g pat of butter? (b) How many flights is this if each flight has 16 stairs?
A ball is thrown off a building at an upward angle. Air resistance can be neglected. Which of the following statements describes the total energy of the ball after it is released? a. The total energy goes up as the ball goes up, then goes down as the ball goes down. b. The total energy goes down as the ball goes up, then goes up as the ball goes down. c. The total energy stays the same the whole time. d. The total energy has a constant positive value as the ball goes up and a constant negative value as the ball goes down. e. The ball loses energy until the total energy is zero (when the ball reaches it highest point) then the ball falls to the ground.
Your hand is wrapped around a cold iron bar. Your hand has 1000 J of thermal energy before touching the bar and 900 J after holding the bar for a minute. How much energy has the bar gained in the time of contact. A. 1000 J B. 900 J C. 100 J D. 1900 J