Mass on a Spring: When a 0.350-kg package is attached to a vertical spring and lowered slowly, the spring stretches 12.0 cm. The package is now displaced from its equilibrium position and undergoes simple harmonic oscillations when released. What is the period of the oscillations?
A. 0.695 s
B. 0.483 s
C. 0.286 s
D. 0.0769 s
E. 1.44 s
Answer: A
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Fill in the blank(s) with the appropriate word(s).
The word electric comes from the Greek word for
A. wool. B. amber. C. silk. D. glass. E. lodestone.
According to the ______________ theory, the universe began from a single point 13.7 billion years ago
Fill in the blank(s) with correct word
Case 1: An electron is released from rest in a uniform electric field. Case 2: A proton is released from rest in a uniform electric field of the same magnitude as in case 1 . How does the electric potential energy of the charge-field system behave in these cases?
a. In case 1 the potential energy increases, but in case 2 it decreases. b. In both cases, the potential energy increases. c. In case 1 the potential energy decreases, but in case 2 it increases. d. In both cases, the potential energy decreases.