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/kg
What 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
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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
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).
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
Dripstone formations that form on cavern floors are called _____________
a. stalactites b. pool stones c. stalagmites d. sedimentary