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Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 5 - Problem 55
Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 5 - Problem 55

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ISBN: 9781938168185 2032

Solution for problem 55 Chapter 5

University Physics, Volume 3 | 17th Edition

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Problem 55

Relativistic Momentum

(a) Find the momentum of a $$1.00 \times 10^{9}-\mathrm{kg}$$ asteroid heading towards Earth at 30.0 km/s. (b) Find the ratio of this momentum to the classical momentum. (Hint: Use the approximation that $$\gamma=1+(1 / 2) v^{2} / c^{2}$$ at low velocities.)

Text Transcription:

1.00 times 10^9 kg

gamma=1+(1/2)v^2/c^2

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Week 3 Chapter 26 cont. I. 26.5 The Refraction of Light  Ray of light enters a medium where its speed decreases = it is bent toward the normal  Ray of light enters a medium where its speed increases = it is bent away from the normal  No change in propagation if there is no change in index of refraction o Greater the change in index of refraction, the greater the change in propagation direction  If a ray goes from one medium to another long its normal, it is undeflected, regardless of the index of refraction  Refraction can make objects immersed in water appear broken and create mirages o  If a light enters a medium of lower index of refraction, it will be bent away from the normal  If the angle of incidence is large enough, the angle of refraction is 90 o o At larger incident angles, the light will be totally reflected  Snell’s Law o This is how to write the angle of refraction in terms of the index of refraction o N1sinθ1= N s2nθ 2  N is the value corresponding to the medium in which the ray is traveling in  Θ refers to the angle at which the ray is traveling in respect to the normal  Total internal refraction is when the angle of refraction is 90o o Ex. Binoculars and optical fibers  Brew

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