Virtually all galaxies are moving away from the Milky Way
Indicate whether the statement is true or false
TRUE
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Ninety percent of all normal stars in a Hertzsprung-Russell (H-R) diagram are:
A) in the giant region. B) in the supergiant region. C) on the random sequence. D) on the main sequence.
If one star has a temperature of 4000 K and another star has a temperature of 40,000 K, how much more energy per second will the hotter star radiate from each square meter of its surface? ____________________
Fill in the blank(s) with correct word
How would we view time (clocks) on the spaceship as it goes by?
A) Time is the same for everyone. B) Their clocks are going at the same rate as ours. C) Their clocks are going exactly half as fast as ours. D) Their clocks are going faster than ours. E) Their clocks are going slower than ours.
A person weighing 0.70 kN rides in an elevator that has an upward acceleration of 1.5 m/s2 . What is the magnitude of the force of the elevator floor on the person?
a. 0.11 kN b. 0.81 kN c. 0.70 kN d. 0.59 kN e. 0.64 kN