If we could measure the mass of the spaceship as it goes by, what would it be?
A) Its mass is infinite.
B) Its mass is greater than its rest mass.
C) Its mass is the same as it would be if it were not moving.
D) Its mass is less than its rest mass.
B
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What causes the meteor showers we witness on Earth? a. Earth passes through comet dust particles
b. Earth passes through remnants of an impacted asteroid. c. Earth passes through the asteroid belt. d. Earth passes through the coma of a comet. e. Earth passes through solar wind particles.
A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 
acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration. What is the angular distance traveled by a point 4.00 cm from the center, at the time 10.0 seconds from the start?
A. 20.8 radians B. 26.3 radians C. 37.5 radians D. 41.6 radians E. 47.3 radians
How do we determine the age of a star cluster?
a) by identifying the type of stars that have just turned off the main sequence b) spectroscopic parallax c) by determining the spectral types of the faintest stars in the cluster d) radioactive dating e) by comparing the ages of white dwarfs and red giants
If one metal has double the number of conduction electrons per unit volume of a second metal, then its Fermi level (energy) is how many times that of the second metal?
A) 1.41 B) 1.59 C) 2.00 D) 2.83 E) 3.22