Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. The quantity 1/2 mv2 is
a. the kinetic energy of the crate
b. the potential energy of the crate
c. the linear momentum of the crate
d. the work you do on the crate
e. the power you supply to the crate
A
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The point directly over your head is called ________
A) the north celestial pole B) the North Star C) the meridian D) the zenith
For safety in climbing, a mountaineer uses a 50-m long nylon rope that is 1.0 cm in diameter. When supporting a 90-kg climber, the rope elongates 1.6 m. Find the Young's modulus for the rope material
Ohm's Law: If a quantity you calculated has units of 
, what is that quantity?
A. potential B. resistivity C. resistance D. capacitance E. charge
A device obeying Ohm's law must have a resistance which
A) is proportional to voltage. B) is proportional to current. C) is constant. D) is zero.