Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton. She heads due east at 280 km/h for one hour but finds herself at Keene, which is 294 km from Binghampton in a direction 17.8 degrees north of due east. What was the wind velocity?
A. 14 km/h, E
B. 14 km/h, W
C. 14 km/h, N
D. 90 km/h, S
E. 90 km/h, N
Answer: E
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A diatomic molecule consists of two point masses, m1 and m2, separated by a distance r. If x is the distance from m1 to the center of mass, find the moment of inertia in terms of x about an axis parallel to the molecular axis through the center of mass
a. 0 b. m1x2 + m2(r ? x)2 c. m1m2 r2(m1m2) d. m1(r ? x)2 + m2x2 e. m1x2 + m2r2
Study the sizes of the gas giants shown in the image above (the distance from the Sun increases from left to right), and choose the best explanation that accounts for their differences in size.
Choose one: A. Gas giants increase in size with increased distance from the Sun because more types of materials could condense farther out. B. Gas giants increase in size with increased distance from the Sun because the Solar Nebula was denser farther out. C. Gas giants decrease in size with increased distance from the Sun because the Solar Nebula was less dense farther out. D. Gas giants decrease in size with increased distance from the Sun because fewer types of materials could condense farther out.
A tennis ball bounces on the floor three times. If each time it loses 22.0% of its energy due to heating, how high does it rise after the third bounce, provided we released it from the floor?
A) 110 cm B) 11 cm C) 110 mm D) 140 cm
An extremely large collection of stars bound together by gravitational attraction and occupying a huge volume of space is called a _______________
a. planetary nebula b. solar system c. universe d. galaxy