lect 5 part 1

Lect 5 part 1 - Question21 BasedonNewton'sfirstlaw,ifabodyismovingin acurvedpath,then A B C D E thebody'spositioncannotbe determinedprecisely

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
2/2/2010 1 Based on Newton's first law, if a body is moving in a curved path, then Ai t is being controlled by gravity B there is a force acting on it Question 2 1 C there is no equal and opposite reaction D there is no force acting Et h e body's position cannot be determined precisely 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. AY e s , because the force that Earth exerts on me would be slightly less because my mass increases as I move away from Earth. BY e s , because the force that Earth exerts on me would be slightly less because I am slightly farther from it. CN o , my weight will be the same everywhere. DY e s , 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) Ag o around the Earth as before Question 2 3 Bd r o p straight down to the ground Cr e m a i n in the position it was before gravity ceased Dg o flying off in a straight tangential line (to their original orbit) En o n e of the above
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2/2/2010 2 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 decreases by a factor of nine. B increases by a factor of nine. Cd o e s 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 ray gamma ray Question 2 5 ultraviolet, x ray, gamma ray C infrared, microwave, radio Da l l of the above have wavelengths shorter than visible light En o n e of the above have wavelengths with all shorter than visible light Planck radiation curves have which characteristics plotted on its two axes? A d f Question 2 6 temperature and frequency B temperature and wavelength C spectral type and temperature D intensity and wavelength E frequency and wavelength
Background image of page 2
2/2/2010 3 Wien's Law relates which two properties of an object?
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/06/2011 for the course ASTR 113 taught by Professor Geller during the Spring '08 term at George Mason.

Page1 / 15

Lect 5 part 1 - Question21 BasedonNewton'sfirstlaw,ifabodyismovingin acurvedpath,then A B C D E thebody'spositioncannotbe determinedprecisely

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online