When the distance between the two charges is doubled, the force between them is
A) doubled.
B) quadrupled.
C) reduced by a factor of 3.
D) reduced by a factor of .
E) reduced by a factor of 4.
E
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Indicate whether the statement is true or false
A 0.200-kg object, attached to a spring with spring constant k = 16.0 N/m, is moving on a horizontal frictionless surface in simple harmonic motion of amplitude of 0.0840 m. What is its speed at the instant when its displacement is 0.0420 m? (Hint: Use conservation of energy.)
a. 6.51 m/s b. 0.269 m/s c. 65.1 cm/s d. 84.0 cm/s e. 46.0 cm/s
What primary wavelength and corresponding photon energy is emitted by a body at: (a) 400.°C? (b) 800.°C? (c) 1200.°C?
What will be an ideal response?
You stand three feet away from a plane mirror. How far is it from you to your image?
a. 4.0 ft c. 2.0 ft b. 6.0 ft d. 3.0 ft