(A) At rest, a spaceship has length Lo. In motion at speed v, its length is measured by external observers (at rest) to be L. What is the speed v in terms of the speed of light? (B) In the kitchen of the spaceship the chef sets the oven timer for 2 hours to bake a cake. How much time will the cake spend in the oven, as measured by the external observers ?

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A: The relativistic kinetic energy (KE) of the electron is equal to the rest energy (E).

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A: (a) Time t° = 3years (b) length L= 833 ft

Q: Travel to the stars requires hundreds or thousands of years, even at the speed of light. Some people…

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Q: A certain star is 10.6 light-years away (A light-year is the distance that light travels in one…

A: distance of a certain star =  10.6 light years1 light year = 9.5×1015 m speed of spaceship (v) =…

Q: How fast must an object be going if its rest length is 2.1 times as long as its observed length?

A: Given: The rest length of the object is 2.1 times of the observed length.

Q: An astronaut travels in a spaceship traveling at 0.87 c away from a stationary observer on the…

A: according to tension we need to find the proper length observed by Astronaut Riding in the spaceship…

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A: Given,Lets take the flashing of light at the nose and tail as 2 events A and B respectively.The two…

Q: A particle known as a pion lives for a short time before breaking apart into other particles.…

A: Given data as per question speed = 0.990c t = 3.5* 108

Q: (a) What is the momentum (in kg · m/s) of a proton moving at 0.662c?  kg · m/s (b) At what speed (in…

A: (a) momentum of the proton prel=m0v1-v2c2=1.67×10-27 kg0.6223.0×108 m/s1-0.662c2c2=4.157×10-19…

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Q: Physics A wormhole is created, with one mouth stationary here on Earth, and the other mouth on…

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Q: An astronaut takes off from Earth and moves at speed 0.99c toward the star Z, which is 26 ly…

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Q: The formula for length contraction gives the length of an interval on a ruler moving with velocity v…

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Q: Astronaut Billbarr flees earth in a spaceship traveling at constant velocity to Alpha Centauri.…

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Q: A moving spaceship measures 20m long, but according to an observer at rest looking at it, it seems…

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Q: In their common rest frame, two stars are 92.0 light-years (ly) apart. If they are 36.0 apart as…

A:

Q: You are on an interstellar mission from the Earth to the 8.7 light-years distant star…

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Q: How much energy would be required to accelerate a particle of mass m from rest to  a speed of (a)…

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A:

Q: (a) What is the momentum (in kg · m/s) of a proton moving at 0.716c?  kg · m/s (b) At what speed (in…

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Q: e Lorentz contraction formula in relativity theory relates the length L of an object moving at a…

A:

Q: (a) An astronaut took a space travel at nearly constant speed. The astronaut in the spaceship…

A: Dear student,  Since both questions are different as per guidelines we can author only first one…

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A:

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.