The overall direction of change in the universe is toward
A. a state of increased mass in the universe.
B. a state of greater disorder.
C. a state of increased organization.
D. increased energy content of the universe.
Answer: B
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How fast do electromagnetic waves travel?
a. At the speed of sound. b. At the speed of light. c. At one-half the speed of light. d. Six feet per day. e. At varying speeds depending on the electric and magnetic oscillations.
Kepler's second law of planetary motion states "A line from a planet to the Sun sweeps over equal areas in equal intervals of ____."
a. time b. space c. arcs d. ellipses e. spheres
How are Newton's and Einstein's theories of gravity related?
A) Newton's theory applies only to planetary motion while Einstein's theory applies only to black holes B) Einstein's theory is an approximation of Newton's theory C) the two theories are identical D) Newton's theory is an approximation of Einstein's theory
Johnny throws a shotput at an angle of 45.° and it travels a horizontal distance of 30. meters. If he releases the shotput at the same speed but changes the angle to 55.°, what will be the new range (distance)?
A) 25. m B) 28. m C) 41. m D) 32. m E) 37. m