A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two-second time. The ball is referred to at the two-second time. The acceleration is __________
Fill in the blank(s) with correct word
9.8 m/s2
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Exhibit 11-1
Two birds of prey hurtling after the same mouse collide in mid-air and grab each other with their talons. Each 250-g bird is flying at 30 m/s at a 60° angle to the ground.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 11-1. What is the magnitude of their velocity, in m/s, immediately after the collision?
A. 0 B. 13 C. 15 D. 26 E. 30
The use of wave fronts and rays to describe optical phenomena is called
A) wave optics. B) geometrical optics. C) dispersive optics. D) quantum optics.
Free Fall: An astronaut stands by the rim of a crater on the Moon, where the acceleration of gravity is 1.62 m/s2 and there is no air. To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the time is 6.3 s, what is the depth of the crater?
A. 10 m B. 14 m C. 26 m D. 32 m E. 38 m
How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1.0%? The bulk modulus of water is 2.0 × 10^9 N/m2 and 1 ATM = 1.0 × 10^5 N/m2
a. 50 ATM b. 100 ATM c. 1 100 ATM d. 400 ATM e. 200 ATM