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# lect 5 - Question 2-1 Based on Newton's first law if a body...

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Based on Newton's first law, if a body is moving in a curved path, then A it is being controlled by gravity B there is a force acting on it C there is no equal and opposite reaction D there is no force acting E the body's position cannot be determined precisely Question 2-1

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Question 2-2 If you measured your weight with very high precision scale, would you see a difference between your weight at the top of a mountain versus at the bottom of the mountain? Select the best answer. A Yes, because the force that Earth exerts on me would be slightly less because my mass increases as I move away from Earth. B Yes, because the force that Earth exerts on me would be slightly less because I am slightly farther from it. C No, my weight will be the same everywhere. D Yes, because the force that Earth exerts on me would be slightly less because my mass decreases as I move away from Earth.
If gravity were to suddenly disappear for our orbiting space shuttle astronauts, they would (by Newton’s first Law) A go around the Earth as before B drop straight down to the ground C remain in the position it was before gravity ceased D go flying off in a straight tangential line (to their original orbit) E none of the above Question 2-3

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Question 2-4 Newton's Law of Gravity is F = G*m1*m2/(r*r) This equation states that if the distance between two objects increases by a factor of three, the force they exert on each other A decreases by a factor of nine. B increases by a factor of nine. C does not change. D increases by a factor of three. E decreases by a factor of three.
Which of the following groups have electromagnetic wavelengths, all of which are shorter than visible light: A ultraviolet, microwave, radio B ultraviolet, x-ray, gamma ray C infrared, microwave, radio D all of the above have wavelengths shorter than visible light E none of the above have wavelengths with all shorter than visible light Question 2-5

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Planck radiation curves have which characteristics plotted on its two axes? A temperature and frequency B temperature and wavelength C spectral type and temperature D intensity and wavelength E frequency and wavelength Question 2-6
Wien's Law relates which two properties of an object? A

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lect 5 - Question 2-1 Based on Newton's first law if a body...

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