It is diffraction that limits the ________ of a telescope of a given objective diameter
A) magnification
B) light grasp
C) interference
D) aperture
E) resolution
E
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What can trigger the gravitational collapse of an interstellar gas cloud?
A) a decrease in temperature B) an increase in density C) a rise in temperature D) A and B E) A and C
The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil away 1 kg of water is 10 times the amount of heat required to melt 1 kg of ice
a. True b. False Indicate whether the statement is true or false
Acceleration: A car is traveling north at 17.7 m/s. After 12 s its velocity is 14.1 m/s in the same direction. Find the magnitude and direction of the car's average acceleration.
A. 0.30 m/s2, south B. 2.7 m/s2, south C. 0.30 m/s2, north D. 2.7 m/s2, north
Carts A and B have equal masses and travel equal distances on straight frictionless tracks while a constant force F is applied to A, and a constant force 2F is applied to B. The relative amounts of work done by the two forces are related by
a. WA = 4 WB. b. WA = 2 WB. c. WA = WB. d. WB = 2 WA. e. WB = 4 WA.