(a) How fast would a motorist have to betraveling for a yellow 1l = 590 nm2 traffic light to appear green1l = 550 nm2 because of the Doppler shift? (b) Should the motorist be traveling toward or away from the traffic light to see thiseffect? Explain

Q: Spatial separation between two events. For the passing reference frames of the figure, events A and…

A: Given Time period,  ∆t=tB-tA=2μs unprimed frame, ∆x=xB-xA=497M  d∆x'dβ=β∆x-c∆t1-β232=0 Where c is…

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: motorboat is crossing a river that flows eastward at a speed of 5 kph. If the boat needs to maintain…

A: Given:- The speed of the river in the east direction is v→r= 5i^ km/h The speed of the boat in the…

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

A:

Q: You are on a train platform and a train, traveling at 10 mph, passes by you moving to the right. A…

A:

Q: A particle travels at 1.90 x 108 m/s and lives 2.10 x 10-8 s when at rest relative to an observer.…

A: The decay time in the rest frame is, The particle’s velocity is,

Q: Will the clock rün faster or slower in the Rockies? Neglect theimass distribution under the Earth…

A: Time period T of a pendulam clock is given by:T=2πLgWhere L is the length of the pendulam…

Q: Explain, why does a moving clock appear to run slow?

A:

Q: An astronaut travels away from the Earth at a speed of 0.95c and sends a light signal back to the…

A: In the given question, Speed of the astronaut = 0.95c It travels away from earth. The astronaut…

Q: Tworockets ofrest length 3mare approaching the earth from opposite direction at velocities 1.5 x108…

A: Rest length of rockets: l = 3m  Speed of rocket: v = 1.5 x 108 m/s  = 0.5 c m/s

Q: To whom does the elapsed time for a process seem to be longer, an observer moving relative to the…

A:

Q: Suppose that a father is 23.00 y older than

A:

Q: As you pilot your space utility vehicle at a constant speed toward the moon, a race pilot flies past…

A: Given data: The velocity of spaceracer is u=0.84 c. The distance passed by spaceracer is d=1.29×108…

Q: Two students, Nora and Allison, are both the same age when Allison hops aboard a flying saucer and…

A:

Q: Suppose that a person is 15.00 y older than their sibling. The person wants to travel outward from…

A: Let the age of sibling be = x Age of person = x + 15 Age of person when return = x+ 15 +4 = x + 19…

Q: As you pilot your space utility vehicle at a constant speed toward the moon, a race pilot flies past…

A: Relative Speed of the race pilot is v = 0.830c  d = 1.13×10⁸ m

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

A:

Q: Suppose that a person is 20.00 y older than their sibling. The person wants to travel outward from…

A: We have to use concept of time dilation here.

Q: A particle travels at 1.90×108 m/s and lives 2.10×10−8 s when at rest relative to an observer. How…

A:

Q: A light source and an observer approach each other with relative speed v 0.9c, and the frequency…

A:

Q: An alien spaceship travels at v=0.999c-299482km/s (where 'c' is the speed of light equal to 299782…

A:

Q: An observer in reference frame S claims that two events occur simultaneously. As this observer sees…

A:

Q: If two spaceships are heading directly towards each other at 0.800c , at what speed must a canister…

A: Given information: Here v is the speed of each spaceship S1 and S2, and ux’ is the speed of the…

Q: If relativistic effects are to be less than 3%, then y must be less that 1.03. At what relative…

A:

Q: At what speed, in m/s,  would a moving clock lose 1.1 ns in 1.0 day according to experimenters on…

A:

Q: 2. A 1.2 kilometer - long train is travelling at a speed of 100 mi/hr. How long is the train as…

A: The speed of the train in m/s is:

Q: A pemdulum clock is moved from the Mississippi delta region to the rocky mountains. will the clock…

A: Given: pemdulum clock is moved from the Mississippi delta region to the rocky mountains. will the…

Q: Does motion affect the rate of a clock as measured by an observer moving with it? Does motion affect…

A: No. If the observer is moving with the clock, it will have zero relative velocity. Thus, the motion…

Q: A spaceship measures bright flashes of light from a distant star. The spacecraft now heads toward…

A:

Q: According to observer O, a blue flash occurs at ?1 = 10.4m when ?1 = 0.124µs and a red flash occurs…

A: Given : x1 = 10.4 m t1 = 0.124µs = 0.124 x 10-6 s x2 = 23.6 m t2 = 0.138µs = 0.138 x 10-6 s

Q: Suppose that a father is 20.00 y older than his daughter. He wants to travel outward from Earth for…

A: The formula for the time dilation is: The father is 20 years older than his daughter but after…

Q: A spacecraft travels at 1.5 X 108 m/s relative to Earth. A process onboard the ship as measured by…

A: Given: The speed of the ship is 1.5x108 m/s. The time of stationary clock on the earth is 85 min.

Q: In 2030, the Australian Space Agency launches a spaceship to our nearest neighbour Alpha Centauri,…

A: CONCEPT: Given,           The distance of alpha Centauri from the Earth is…

Q: A computer in a laboratory requires  5.60 μs  to make a certain calculation, as measured by a…

A:

Q: Given the fact that light travels at c , can it have mass? Explain.

A: Light cannot have mass.

Q: An out-of-control alien spacecraft is diving into a star at a speed of 1.0 x 108 m/s. At what speed,…

A: According to the Einstein principle of relativity the speed of the light will be always same in all…