Clocks on a spaceship moving at high speed relative to the Earth run more slowly when viewed from

A) within the spaceship.
B) Earth.
C) both of these
D) neither of these


Answer: B

Physics & Space Science

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Sunspots are cooler than the surrounding solar surface because

A) they are regions where convection carries cooler material downward. B) strong magnetic fields slow convection and prevent hot plasma from entering the region. C) magnetic fields trap ionized gases that absorb light. D) there is less fusion occurring there. E) magnetic fields lift material from the surface of the Sun, cooling off the material faster.

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Two objects of the same mass move along the same line in opposite directions

The first mass is moving with speed v. The objects collide, stick together, and move with speed 0.100v in the direction of the velocity of the first mass before the collision. What was the speed of the second mass before the collision? A) 1.20v B) 10.0v C) 0.900v D) 0.800v E) 0.00v

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Charge carriers in a metal are electrons rather than protons because electrons are

A) negative. B) smaller. C) loosely bound. D) none of the above

Physics & Space Science

In organic molecules, a sulfur atom will normally form how many bonds?

a. 0 b. 1 c. 2 d. 3 e. 4

Physics & Space Science