A heavy dart and a light dart are launched vertically by identical ideal springs. Both springs were initially compressed by the same amount. There is no significant air resistance

Which of the following statements about these darts are correct? (There could be more than one correct choice.) A) The heavy dart goes higher than the light dart.
B) The light dart goes higher than the heavy dart.
C) Both darts reach the same maximum height.
D) At the maximum height, both darts have the same gravitational potential energy.
E) Both darts began moving upward with the same initial speed.


B, D

Physics & Space Science

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Sundogs and halos of the Sun and the Moon are caused by:

a. refraction by the atmosphere. b. refraction by water droplets. c. reflection of the object in water. d. scattering by molecules in the air. e. refraction by atmospheric ice crystals.

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The gravitational force is to gravitons as the electromagnetic force is to

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A solenoid of length 5.0 cm has a cross sectional area of 1.0 cm2 and has 300 uniformly spaced turns. The solenoid is wrapped in 180 turns of insulated wire resulting in a mutual inductance of

A) 1.1 H. B) 1.4 × 10-2 H. C) 11 H. D) 1.4 × 10-4 H. E) 110 H.

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