A spaceship moving past the Earth with a speed of 0.800 c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock. According to observers on Earth who see the flashes, the time interval they measure is
a. 13.4 s
b. 16.7 s
c. 12.5 s
d. 9.70 s
e. 6.03 s
B
Physics & Space Science
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A.) Dark energy. B.) Dark matter. C.) Atoms.
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A) iron. B) lead. C) gold. D) all of the above E) none of the above
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The normal force that acts on a block of ice that slides on a ramp
A) is equal to mg at all angles. B) decreases as the slope of the ramp increases. C) becomes greatest when the ramp is vertical.
Physics & Space Science
The circuit below contains three 100-W light bulbs and a capacitor. The emf is 110 V and the capacitor is fully charged. Which light bulb(s) is(are) brightest?
A. A B. B C. C D. A and B E. A and C
Physics & Space Science