A mirage is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations.
Answer: B
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Projectile Motion: A cat leaps to try to catch a bird. If the cat's jump was at 60° off the ground and its initial velocity was 2.74 m/s, what is the highest point of its trajectory, neglecting air resistance?
A. 0.29 m B. 0.58 m C. 10.96 m D. 0.19 m
Suppose the Sun were suddenly to shrink in size but that its mass remained the same. According to the law of conservation of angular momentum, what would happen?
A) The Sun would rotate faster than it does now. B) The Sun's rate of rotation would slow. C) The Sun's angular size in our sky would stay the same. D) This could never happen, because it is impossible for an object to shrink in size without an outside torque.
When a bus brakes to a stop its kinetic energy transforms to
A) stopping energy. B) potential energy. C) energy of motion. D) energy of rest. E) heat.
Stars are powered by ________
Fill in the blank(s) with correct word