You are in an airplane, traveling relative to the ground at 500 km/hr. You throw a baseball toward the front of the plane at a speed of 50 km/hr. How fast would someone on the ground say the baseball is moving?
A) 550 km/hr
B) 50 km/hr
C) 500 km/hr
D) 450 km/hr.
A
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The sun is on the celestial equator at the times of the
a. vernal equinox and the summer solstice. b. autumnal equinox and the vernal equinox. c. summer solstice and the winter solstice. d. autumnal equinox and the winter solstice. e. sun is on the ecliptic and is never on the celestial equator.
ZAMS is an acronym for ______________________________
Fill in the blank(s) with correct word
A rainbow shows separate colors of the spectrum because, at raindrop surfaces,
A. blue light is bent more than red light. B. all colors are bent the same, hence the separation. C. green light is bent more than blue light. D. red light is bent more than green light.
How is the solubility of a solid affected by temperature?
A) As temperature goes up, the solubility goes up. B) As temperature goes down, the solubility goes down. C) As temperature goes up, the solubility goes down. D) As temperature goes down, the solubility goes up. E) both A and B