Although the Sun does not generate energy by gravitational contraction today, this energy-generation mechanism was important when the Sun was forming
Indicate whether the statement is true or false
TRUE
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If Jupiter were scaled to the size of a basketball, Earth would be the closest to the size of
A) a marble. B) a baseball. C) a grapefruit. D) a basketball. E) a pinhead.
When atmospheric pressure increases, what happens to the absolute pressure at the bottom of a pool?
A) It does not change. B) It increases by a lesser amount. C) It increases by the same amount. D) It increases by a greater amount. E) It depends on the depth of the pool.
A diffraction grating has 2500 lines/cm. What is the slit separation?
a. 4.0 mm c. 400 nm b. 250 nm d. 2.5 mm
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