How much do the disk temperatures increase

Assignment Help Physics
Reference no: EM13539339

A 1500kg car moving at 40Km/hr is brought to a sudden stop. If all the car's kinetic energy is dissipated in heating its four 5.0kg steel brake disks, by how much do the disk temperatures increase? The specific heat of steel is c=0.120cal/gdegree Celsius

Reference no: EM13539339

Questions Cloud

What frictional force must be exerted by floor on ladder : A 5.00 m long uniform ladder leans against a smooth wall and its base rests on a rough floor.  The ladder has a mass of 18.0 kg and its base is a distance of 2.30 m from the wall.  A person of mass 80.0 kg climbs 2.50 m up the ladder.  If the ladder ..
An electron is released from rest in an electric field : An electron is released from rest in an electric field of 2.13 x 10-10 N/C pointing to the right. After the electron has traveled a distance of 1.2 micrometers, what is its velocity?
What is the total rate of entropy generation : A 25 ohm resistor at steady state draws a current of 10 amperes. Its temperature is 310 K; the temperature of the surroundings is 300 K.. what is the total rate of entropy generation?
What is the entropy change of gas heated in a steady-flow : what is the entropy change of the gas, heated in a steady-flow process at approximately atmospheric pressure,
How much do the disk temperatures increase : A 1500kg car moving at 40Km/hr is brought to a sudden stop. If all the car's kinetic energy is dissipated in heating its four 5.0kg steel brake disks, by how much do the disk temperatures increase? The specific heat of steel is c=0.120cal/gdegree Cel..
The car with a heavy load in the trunk-remains horizontal : A car has a total mass of 1800kg. The volume of air space in the passenger compartment is 5.00m^3. The volume of the motor and front wheels is 0.750m^3 and thevolume of the rear wheels, gas tank, and trunk is 0.800m^, water cannot enter these area..
Calculate the molar entropy changes of the two gas streams : An ideal gas, Cp = (7/2)R, is heated in a steady-flow heat exchanger from 70°C to 190°C by another stream of the same ideal gas which enters at 320°C. The flow rates of the two streams are the same, and heat losses from the exchanger are negligibl..
What are the power developed and the heat rejected : A Carnot engine receives 250 kJ s-1 of heat from a heat-source reservoir at 525?C and rejects heat to a heat-sink reservoir at 50?C. What are the power developed and the heat rejected?
Liquid isobutane is throttled through a valve : Liquid isobutane is throttled through a valve from an initial state of 360 K and 4000 kPa to a final pressure of 2000 kPa. Estimate the temperature change and the entropy change of the isobutane. The specific heat of liquid isobutane at 360 K is 2.78..

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude of the resulting magnetic field

A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.

  Find the equivalent resistance

A resistor is in the shape of a cube, with each side of resistance  R . Find the equivalent resistance between any two of its adjacent corners.

  What is the electric field at the location

Question: Field and force with three charges? What is the electric field at the location of Q1, due to  Q 2 ?

  What is the maximum displacement of the bridge deck

What is the maximum displacement of the bridge deck?

  What is the magnitude of the current in the wire

What is the magnitude of the current in the wire as a function of time?

  Blackbody

Questions on blackbody, Infra-Red Detectors & Optic Lens and Digital Image.

  Gravity conveyor

Illustrate the cause of the components accelerating from rest down the conveyor.

  Calculate the dc voltage

Calculate the dc voltage applied to the circuit.

  Quadrupole moments in the shell model

Quadrupole moments in the shell model

  Determine the tension in each string

Determine the tension in each string

  Introductory mechanics: dynamics

Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.

  Evaluate maximum altitude

Evaluate maximum altitude?

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