A 2000 kg car is traveling at 15.0 m/s down a long mountain grade of 2.0%. The mountain road is 5.0 km long. The heat generated at the brakes due to friction heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg 
What is the increase in the temperature of the brakes?
A. 43 
B. 54
C. 83
D. 95
E. 117
E. 117
Physics & Space Science
You might also like to view...
The diameter of the sun is 13.9 × 108 m, and the distance from the Earth to the sun is 1.5 × 1011 m. How long does it take for the sun to disappear after it touches the horizon?
What will be an ideal response?
Physics & Space Science
Which term is used to describe a navigational menu that is collapsed or hidden by default?
A. hamburger B. sandwich C. pizza D. sushi
Physics & Space Science
Which of the following do the atoms 14N and 15N have in common?
A) total number of neutrons and electrons B) number of protons C) total number of protons and neutrons D) number of neutrons
Physics & Space Science
A wave on a lake is found to have a wavelength of 2 m and a frequency of 0.3 Hz. What is the speed of this wave?
What will be an ideal response?
Physics & Space Science