The force exerted on the tires of a car that directly accelerate it along a road is exerted by the
A) engine.
B) tires.
C) air.
D) road.
E) none of the above
Answer: D
You might also like to view...
________ attraction holds the electron in orbit around the nucleus of the hydrogen atom.
A. Gravitational B. Electrical C. Nuclear D. Centrifugal
Supernova remnants differ from star forming regions because, although there is ionized hydrogen in both, supernova remnants:
A) don't look like star forming regions. B) are much bigger than star forming regions. C) are located far from star forming regions. D) are more diffuse than star forming regions. E) contain no ionizing stars.
Radiation: In an electric furnace used for refining steel, the temperature is monitored by measuring the radiant power emitted through a small hole in the wall of the furnace, of area 0.5 cm2. This hole acts like a perfect blackbody radiator having the same temperature as the interior of the furnace. If the temperature of the furnace (and therefore of the hole) is to be maintained at 1650°C, how much power will the hole radiate?
A. 20 W B. 30 W C. 40 W D. 50 W
Wiley Coyote has missed the elusive roadrunner once again. This time, he leaves the edge of the cliff at 50.0 m/s horizontal velocity. If the canyon is 100 m deep, how far from the edge of the cliff does the coyote land?