A mass of 1.0 kg is pushed against a spring with a spring constant of 25 N/m. As a result, the spring is compressed by 20 cm. The mass is then released. What is the amount of work required to compress the spring?
What will be an ideal response?
0.50 J
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Comets are largely made out of
A) rock and ice. B) hydrogen gas. C) rock. D) hydrogen compounds. E) metal.
Atmospheric pressure is approximately
A) 1.01 × 102 Pa B) 1.01 × 103 Pa C) 1.01 × 104 Pa D) 1.01 × 105 Pa E) 1.01 × 106 Pa
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is NaN N. The buoyant force has a magnitude of NaN N and acts vertically upward
An external force acting on the ball maintains it in a state of rest. The external force, including direction, is closest to: A) NaN N, downward B) NaN N, upward C) NaN N, upward D) NaN N, upward E) NaN N, downward
A series LCR AC circuit is at resonance. It contains a resistor of 16 W, a capacitor of 0.35 mF, and an inductor of 90 mH. If an effective (rms) voltage of 150 V is applied, what is the effective (rms) current when the circuit is in resonance?
a. 9.4 A c. 5.0 A b. 3.3 A d. 16.1 A