If a nonzero torque is applied to an object, that object will experience:
a. a constant angular speed. b. an angular acceleration.
c. a constant moment of inertia. d. an increasing moment of inertia.
b
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Other planetary systems are best detected by the Doppler shifts that change the pattern of the star's
a. spectrum. b. brightness. c. rotational period. d. twinkling.
A uniform rod (mass = 1.5 kg) is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a horizontal position. What is the angular speed of the rod when the rod makes an angle of 30° with the horizontal? (The moment of inertia of the rod about the pin is 2.0 kg/m2)
a. 2.2 rad/s b. 3.6 rad/s c. 2.7 rad/s d. 3.1 rad/s e. 1.8 rad/s
Describe the seafloor spreading theory
What will be an ideal response?
An ideal transformer supplies 100 kW of power to a 120 V circuit. If the input voltage is 10,000 V, what is the input current?
A. 1.20 mA B. 10.0 A C. 120 A D. 240 A E. 830 A