A wheel rotating about a fixed axis with a constant angular acceleration of 2.0 rad/s2 turns through 2.4 revolutions during a 2.0-s time interval. What is the angular velocity at the end of this time interval?
a. 9.5 rad/s
b. 9.7 rad/s
c. 9.3 rad/s
d. 9.1 rad/s
e. 8.8 rad/s
a
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Which of the following regions was the result of plumes of hot mantle rising in a hot spot within a plate?
A) Alaska's Aleutian Islands B) Japan and the Philippines C) the islands of Hawaii D) the volcano Mount St. Helens E) all of the above
A charged particle (q = -8.0 mC), which moves in a region where the only force acting on the particle is an electric force, is released from rest at point A. At point B the kinetic energy of the particle is equal to 4.8 J. What is the electric potential difference VB - VA?
a. -0.60 kV b. +0.60 kV c. +0.80 kV d. -0.80 kV e. +0.48 kV
A gasoline engine with an efficiency of 32.6% operates between a high temperature T1 and a low temperature T2 = 320 K. If this engine operates with Carnot efficiency, what is the high-side temperature T1?
a. 980 K b. 700 K c. 1 050 K d. 480 K e. 220 K
Impulse: A golf ball of mass 0.050 kg is at rest on the tee. Just after being struck, it has a velocity of 102 m/s. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball by the club?
A. 6.3 kN B. 7.1 kN C. 5.5 kN D. 4.9 kN