What is the increase in temperature of the brakes

Assignment Help Physics
Reference no: EM13675981

A 750-kg car moving at 23 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes?

Reference no: EM13675981

Questions Cloud

Assume that the frequency of the laser light is doubled : A double- slit experiment is performed by a coherent (single frequency/wavelength) beam of laser light. Assume that the two slits are separated by a distance D= 0.1 mm; the distance (H) among the center of the pattern and the second ( m=2) bright reg..
With a gauge find the width of one of your fingers : With a gauge find the width of one of your fingers, also gauge the distance from the tip of your nose to your finger held upright at arms length. What is the angular size of your finger?
Image is formed with spherical mirror of focal length : An upright image is formed with a spherical mirror of focal length of 15 cm. The distance between an object and its upright image is 20.0 cm. The upright image formed with the mirror has a magnification of 0.50.
Examples of hydraulic- lift systems : Dentists’ chairs are examples of hydraulic- lift systems. If a chair weighs 1600 N and rests on a piston by a cross-sectional area of 1440 cm2, what force should be applied to the smaller piston with a cross-sectional area of 72 cm2 to lift the chair..
What is the increase in temperature of the brakes : A 750-kg car moving at 23 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes?
Temperature of the water when the lead becomes solid : A 175-g lump of molten lead at its melting point, 327°C, is dropped into 55 g of water at 20.0°C. What is the temperature of the water when the lead becomes solid? When the lead and water are in thermal equilibrium, what is the temperature?
Equilibrium and released from rest to slide on a horizontal : A 175-g object is attached to a spring that has a force constant of 76.5 N/m. The object is pulled 9.75 cm to the right of equilibrium and released from rest to slide on a horizontal, frictionless table. Compute the maximum speed of the object.
Consider a simple model of the hydrogen atom : Consider a simple model of the hydrogen atom where one electron is in a stable orbit around one proton at a distance of 0.05 nm. If the electron were moved to a larger stable orbit (say 0.1 nm), what would be the sign of: delta U = the change in pote..
What is tension in the string on both sides of the pulley : Two masses (mA = 4 kg, mB = 10 kg) are connected via a light string around a solid disk frictionless pulley (mp = 1 kg, rp = 20 cm). The coefficient of static and kinetic friction among all sur- faces is 0.2 and 0.1 respectively. The angle 1 = 30o wh..

Reviews

Write a Review

Physics Questions & Answers

  Q1 sunlight shining in during the daytime is absorbed by

q1. sunlight shining in during the daytime is absorbed by the floor interior walls and objects in the room raising

  Evaluate the distance each object will move

Two objects with masses of 3.00 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley, find the distance each object will move in the first second of motion if both objects start from rest

  While taking photographs in death valley on a day when the

while taking photographs in death valley on a day when the temperature is 57.0degc bill hiker finds that a certain

  Determine with what velocity will it hit the earth

A body is released from rest a long way from the centre of theearth. With what velocity will it hit the earth. Describe htevelocity

  Evaluate what is the magnitude of the torque

A person exerts a force of 68N on the end of a door 75cm wide. What is the magnitude of the torque if the force is exerted perpendicular to the door

  Find the velocity of the car at the end of initial interval

A car is traveling along a straight road at a velocity of +31.0 m/s when its engine cuts out. For the next ten seconds, the car slows down, and its average acceleration is a1.

  Evaluate the pressure exerted on the wall

In a period of 1.0 seconds, 5.0 x 10^23 nitrogen moleculesstrike a wall of area 8.0 cm^2. find the pressure exerted on the wall

  Illustrate what information is critical to collect

Your thoughts about illustrate what information is critical to collect at the outset of or early on in the interview process. Explain the upsides and downsides/concerns of having to gather this information and address related issues in a first se..

  Forward makes a bounce pass to the center

In a game of basketball, a forward makes a bounce pass to thecenter. The ball is thrown with an initial speed of 4.8 m/s at an angle of 14.2° below the horizontal. It isreleased 0.67 m above the floor. What horizontal distance does the ball cover ..

  Give the center of mass for a water molecule

Give the center of mass for a water molecule. The distancebetween a hydrogen atom and the oxygen atom is .91 angstroms andthe angle between the two O-H bonds is 105o

  At what angle will the third order be observed

the first-order line of 571 nm light falling on a diffraction grating is observed at a 17.9 deg angle, at what angle will the third order be observed

  Determine the mirrors radius of curvature

A dentist uses a mirror to examine a tooth. The tooth is 1.04 cm in front of the mirror, and the image is formed 11.1 cm behind the mirror. Determine the mirror's radius of curvature

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd