If a refrigerator door is left open while the refrigerator is on, the temperature of a house will ________ (increase, decrease, not change).
Fill in the blank(s) with the appropriate word(s).
increase
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Which of the following statements about Mars is not true?
A) We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks. B) We have landed robotic spacecraft on its surface. C) It has mountains that are taller than the tallest mountains on Earth. D) Its surface is frozen today, but evidence indicates it had flowing water in the distant past.
Which of the following is true of the orbits of all the planets in our solar system?
a. They all orbit at the same speed. b. They are all made out of gas. c. They all orbit the Sun in the same direction. d. They have many different orbital inclinations.
A spaceship with a constant velocity of 0.800c relative to Earth travels to the star that is 4.30 light-years from Earth. What distance does the space ship travel as measured by a passenger on the ship?
A) 2.58 light-years B) 3.52 light-years C) 4.12 light-years D) 4.30 light-years
What is the maximum kinetic energy of a 2.00-kg mass moving with simple harmonic motion with an amplitude 5.00 cm and period 0.300 s?
A) 1.10 J B) 0.444 J C) 0.222 J D) 0.174 J E) 0.0278 J