A car of mass 1100 kg that is traveling at 27 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the average braking force acting on the car?
A) 410 N B) 340 N C) 550 N D) 690 N
D
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An adiabatic compression is performed on an ideal gas. The final pressure is equal to 0.560 times the initial pressure and the final volume equals 1.50 times the initial volume. What is the adiabatic constant for the gas?
A) 1.33 B) 1.43 C) 1.48 D) 1.52 E) 1.67
What is the likely source of lunar ice?
A) water that was present when the Moon formed B) contamination from human exploration of the Moon C) volcanism earlier in the Moon's history D) impacts of meteoroids and comets
How do we expect that the first Earth-sized extrasolar planets will be discovered (if they exist)?
A) by the transit technique from an observatory in space B) with photographs from a new generation of large, ground-based observatories C) by NASA's Terrestrial Planet Finder mission D) by the Doppler technique
Discuss why it is impossible for a particle to decay into a single particle of less mass
What will be an ideal response?