A spaceship, traveling at 0.100c away from a stationary enemy station, shoots a projectile towards the station, with a speed of 0.560c relative to the spaceship. What is the speed of the projectile relative to the station?

A) 0.460c
B) 0.487c
C) 0.492c
D) 0.492c
E) 0.660c


B

Physics & Space Science

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The gravitational force is a conservative force

Indicate whether the statement is true or false

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A cylinder, of radius 8.0 cm, rolls 20. cm in 5.0 s. Through what angular displacement does the cylinder move in this time?

What will be an ideal response?

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Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is open,



a.
bulb 1 is glowing; bulb 2 is dark.

b.
bulb 2 is glowing; bulb 1 is dark.

c.
both bulbs glow equally brightly.

d.
both bulbs glow one half as brightly as they do with the switch closed.

e.
both bulbs are dark.

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The angle between two plane mirrors that meet at one edge is 45°. The change in direction of a ray that strikes the first mirror at a 60° angle of incidence when that ray reflects from the second mirror is

a. 0°. b. 45° c. 90° d. 150° e. 270°

Physics & Space Science