Which terrestrial planet is tilted upside down?
A. Earth
B. Mars
C. Mercury
D. Venus
Answer: D
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Two stretched strings with the same length but different tensions are both resonating at the same frequency. Which string has the greater number of antinodes?
A. The string with the larger tension. B. The string with the smaller tension. C. Both must have the same number of antinodes.
As an interstellar cloud of hydrogen gas shrinks in size, its temperature increases
A) because thermal energy is converted to radiative energy. B) because kinetic energy is converted to radiative energy. C) because gravitational potential energy is converted to thermal energy.
The acceleration of a ball as it rolls down a ramp is 3 m/s2 . It starts from rest. (a) What is the ball's speed after 4 seconds? (b) How far does the ball travel during the 4 seconds?
Igneous rock that formed on Earth's surface by solidification of lava is known as
a. extrusive rock. b. intrusive rock. c. metamorphic rock. d. silicate rock.