A 2000 kg car is traveling at 40.0 m/s and then puts on the brakes and comes to a complete stop. The heat generated at the brakes due to stopping heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kgWhat is the increase in the temperature of the brakes?

A. 66.6

B. 75.4

C. 87.5

D. 95.6

E. 117


D. 95.6

Physics & Space Science

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Dripstone formations that form on cavern floors are called _____________

a. stalactites b. pool stones c. stalagmites d. sedimentary

Physics & Space Science

Light from an astronomical source is found to be shifted to a one percent lower frequency than had the source been at rest. What radial velocity could cause such a shift?

A.
m/s moving away from the observer
B.
m/s moving away from the observer
C.
m/s moving toward the observer
D.
m/s moving toward the observer
E.
m/s moving away from the observer

Physics & Space Science

Sound: An elephant can hear sound with a frequency of 15 Hz. What is the wavelength of this wave if the speed of sound in air is 343 m/s?

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Astronomers sometimes make use of "neutrino telescopes," which are typically located deep underground. What are neutrinos?

A) a type of light-weight subatomic particle B) a very high-energy form of light C) a very low-energy form of light D) a type of wave predicted to exist by Einstein's general theory of relativity

Physics & Space Science