Which mission is mapping the heliosphere's boundary?
a. Cassini-Huygens
b. Interstellar Boundary Explorer
c. Voyager I
d. Voyager II
e. Kepler
b
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A 3.45-kg centrifuge takes 100 s to spin up from rest to its final angular speed with constant angular acceleration
A point located 8.00 cm from the axis of rotation of the centrifuge moves with a speed of 150 m/s when the centrifuge is at full speed. (a) What is the angular acceleration (in rad/s2 ) of the centrifuge as it spins up? (b) How many revolutions does the centrifuge make as it goes from rest to its final angular speed?
Angular and Linear Quantities: An electrical motor spins at a constant 2695.0 rpm. If the rotor radius is 7.165 cm, what is the linear acceleration of the edge of the rotor?
A. 5707 m/s2 B. 281.6 m/s2 C. 572,400 m/s2 D. 28.20 m/s2
As the temperature of the air increases, what happens to the velocity of sound? (Assume that all other factors remain constant.)
A) It increases. B) It decreases. C) It does not change. D) It increases when atmospheric pressure is high and decreases when the pressure is low.
Power: A 100-W light bulb is operated by a 110-V dc source. What is the resistance of this bulb?
A. 100 ? B. 8.0 × 10-3 ? C. 6.0 × 10-3 ? D. 120 ? E. 240 ?