As a liquid changes into a vapor ________
a. heat energy is absorbed
b. heat energy is given off
c. the temperature of the liquid rises substantially
d. the specific heat maintains the temperature
a
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A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was thrown.
A. 72 ft/s B. 77 ft/s C. 68 ft/s D. 82 ft/s E. 87 ft/s
Igneous definition
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. Consider a rectangular book. The book is (approximately) symmetric (in the sense defined in the chapter) for rotations around an axis that is perpendicular to its face and goes through its center of mass. 2. The book is (approximately) symmetric for rotations around an axis that goes diagonally from one corner to the other.
All of the Asteroids in the Asteroid Belt together have
A. a tiny fraction of Earth's mass. B. a mass somewhere between the mass of Mars and the mass of Jupiter. C. about Earth's mass. D. about ten times Earth's mass.