A star is observed to move away from us at a speed of 2.9km/s.  How far is the star ? Express your answer in light years.

Q: 1. Two cars are traveling at constant speed along a road in the same direction. Car A moves at 60…

A: Step 1: To find the speed of Car A relative to Car B, we need to determine how fast Car A is moving…

Q: lighthouse sweeps its beam of light around in a circle once every 7.6 s. To an observer in a…

A: Given, Time interval, ∆t=7.6s ∆t'=16s

Q: roller coaster FAHAD for a-c ignore friction a) at which point is the Potential energy the greatest…

A:

Q: A rocket traveling at speed v = 0.74c with respect to Earth launches a space probe at speed 5 =…

A: Velocity of rocket with respect to the earth = 0.74c   means Vr - Ve = 0.74c ........eq1   where Vr…

Q: The Small Magellanic Cloud is a dwarf galary orbiting the Milky Way at a distance of 50 kiloparsecs…

A: Given: The observed velocity of the Small Magellanic cloud relative to the Milky way is v = 207 km/s…

Q: A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last…

A: The objective of the question is to find out the speed of a spacecraft that would allow an astronaut…

Q: You and your secret celebrity crush pass each other in rockets that are each traveling 0.83c…

A: Consider my frame as frame S, and the celebrity's frame as frame S'. S' is moving with velocity,…

Q: A star is observed to move away from us at a speed of 2.8km/s.  How far is the star ? Express your…

A: Given : speed of star 2.8km/s

Q: Please answer within 60 minutes.

A: let's break it down step-by-step to understand how we can explain the observation of a superluminal…

Q: Galaxies at the furthest reaches of the universe are moving away from us at speeds greater than…

A: About speed of light .

Q: 3. We often observe high-speed jets coming from galaxies. The blue light we observe from a jet has a…

A:

Q: A proton travels at 99.9936% of the speed of light. An antiproton travels in the opposite direction…

A: Given data: The speed of proton is vp=99.9936%c. The speed of antiproton is vap=99.9936%c.

Q: The Starship Enterprise returns from warp drive to ordinary space with a forward speed of 51 km/s.…

A:

Q: You fly past the Earth at high speed, and observe a ruler lying on the ground, labelled as "1 meter…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: 13. A 4.50-kg child is swinging on a swing. If she is released from rest at a point 1.45 m above the…

A:

Q: A meter stick moves past you, with its motion relative to you parallel to its long axis. If you…

A:

Q: The nearest star to Earth is Proxima Centauri, 4.2 light-years away. ▾ Part A At what constant…

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Q: Ingii is craft is 20.0 m long and that the identically constructed craft you are sitting s 19.0 m…

A: Given:- A friend passes by you in a spacecraft traveling at a high speed. He tells you thathis craft…

Q: Jek Porkins is passing a small but suspicious-looking moon traveling at 0.490c. If the spherical…

A:

Q: The spaceship Lilac, based on the Purple Planet, is 741 m long when measured at rest. When the Lilac…

A: Givenoringinal length (L0) = 741 mcontracted length (L) = 681 m

Q: spacecraft is traveling at ~v = 38.4km s (yes, that is a reasonable speed for a rocket). How long…

A: Given: The speed of the rocket is 38.4 km/s. The distance from the earth to the moon is 384 Mm.

Q: ack and Jill ran up the hill at 2.9 m/s. The horizontal component of Jill's velocity vector was 2.5…

A: Given: The velocity of Jack and Jill is 2.9 m/s. The horizontal component of the velocity is 2.5…

Q: A spaceship travels at a speed of 2.4 x 108 m/s. A clock in the spaceship passes 60 seconds. How…

A: According to the time dilation, t'=t1-v2c2t=t'1-v2c2

Q: At what speed v will the length of a 1.00 m stick look 5.40 % shorter (94.6 cm )? ΑΣΦ ? v =

A: Given: The actual length of the stick is 1 m. The length of the stick after contraction s 94.6 cm…

Q: Two electrons are brought close together, to a distance of 75 pm apart. They are then both released…

A:

Q: 1. A rocket flies toward the earth at c, and the captain shines a laser light beam in the forward…

A: A rocket flies toward the earth at le, and the captain shines a laser light beam in the forward…

Q: 11. A star is 40.0 light-years from Earth (1 light-year is the distance that light travels in 1…

A: (a) To calculate the distance you would measure when traveling to the star at a high speed, we need…

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.