On the planet Venus, a Venusian picks up a stone and drops it into a deep hole. If it falls 3 m in 1 second, how far will it fall in 2 seconds? You can neglect Venusian air resistance
A) 15 m B) 6 m C) 9 m D) 20 m E) 12 m
E
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Kim is in a spaceship moving past you at half the speed of light. Which of the following correctly describes how you will perceive each other's time?
A) You will say that Kim's time is running slow, and she will say that your time is running slow. B) You will say that Kim's time is running slow, and she will say that your time is running fast. C) You will say that Kim's time is running fast, and she will say that your time is running slow. D) You will both agree that time runs at the same rate for both of you.
The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is consistent with
A) momentum conservation. B) energy conservation. C) Planck's constant. D) none of the above
A blue photon
A) has a smaller wavelength than a red photon and travels with the same speed. B) has a smaller wavelength than a red photon and travels with a greater speed. C) has a longer wavelength than a red photon and travels with the same speed. D) has a longer wavelength than a red photon and travels with a greater speed.
Gamma rays are photons with very high energy. What is the wavelength of a gamma-ray photon with energy 7.7 × 10-13 J? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s)
A) 3.1 × 10-13 m B) 3.5 × 10-13 m C) 3.9 × 10-13 m D) 2.6 × 10-13 m