A 7.5 kg bowling ball is dropped from the top of a 25m tall building. Ignoring air resistance, when the bowling ball hits the sidewalk below, its kinetic energy is equivalent to how many food calories (one food calorie = 1 kilocalorie in SI measure)
A. 0.44
B. 880
C. 440
D. 0.22
E. 0.88
F. 220
A. 0.44
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The _____ is the high-density, high-temperature state from which the expanding Universe of galaxies began
A) big bang B) big dipper C) big collision D) big rip
All of the following are true. Which of the following gives evidence that Earth's orbit is not perfectly circular?
A) The Sun's angular size changes throughout the year. B) The Sun's daily path through the local sky varies over the course of the year. C) In North America, it is hotter in July than January. D) The Earth's axis precesses gradually with a period of about 26,000 years.
An asteroid revolves around the Sun with a perihelion 0.5 AU and an aphelion of 7.5 AU. What is its period of revolution?
A. 4 years B. 8 years C. 16 years D. 32 years E. 64 years
The theory of continental drift is attributed to
A) H.H. Hess. B) Alfred Wegener. C) W. Loma Prieta. D) Simon Tectonic.