A beam of particles travels by at 2.0*10^8. At this speed you measure them to live 5.00* 10^6  sec, before decaying. What is the particle's life time at rest?

Q: What must be the speed of an electron for its relativistic kinetic energy to be equal to its rest…

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

Q: A particle with rest mass m moves with speed 0.6c. What is its kinetic energy?

A: Given data, Rest mass of the particle = m speed of the particle = 0.6c

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: What is the speed of an electron having the same momentum with a proton having speed 0.005c? (Just…

A: Given data: Speed of proton is, v=0.005c.

Q: What is the momentum of an electron traveling at a speed 0.985c? The rest mass of the electron is…

A: The relativistic constant is, γ=11-v2c2 The relativistic momentum of an electron is, p=γmv=mv1-v2c2

Q: What is the SPEED of a beam of muons if their average lifetime is measured to be 5.8x10-6 s? At…

A:

Q: An electron is accelerated so that its kinetic energy isgreater than its rest energy mc2 by a factor…

A: (a) Let the speed is v. The relation is given by  5mc2 = mc21-vc21-vc2 = 125vc=0.98v = 0.98 c

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: The elementary particle called a muon is unstable and decays in about 2.20μs, as observed in its…

A:

Q: At what speed is a particle’s kinetic energy twice its rest energy?

A:

Q: The kinetic energy of a particle of mass m traveling with speed v is equal to K. What is the kinetic…

A: If m is the mass and v is the velocity ,the kinetic energy K=12mv2 When m=m2 and v=2v ,the new…

Q: Two particles are created in a high-energy accelerator and move off in opposite directions. The…

A: The velocity of the first particle in the laboratory framev1=0.580 c The velocity of the second…

Q: How fast must a meter stick be moving if its length is observed to shrink to half a meter by an…

A: l=l01-v2c2

Q: The rest energy of a proton is 9.39 x 108 eV. An proton is accelerated until its kinetic energy is…

A: Rest energy of proton = 9.39×108 eV Kinetic energy of proton = 1.13×109 eV

Q: A meter stick moving in a direction parallel to its length appears to be only 43.6 cm long to an…

A: Given: The actual length of the stick is 1 m( meterstick). The apparent length of the stick is 43.6…

Q: What is the momentum of an electron traveling at 0.980c ?

A: The expression for the Lorentz factor,

Q: How far from the earth would you be able to travel in a lifetime of 82 years if you were able to…

A:

Q: A neutron lives 900 s when at rest relative to an observer.How fast is the neutron moving relative…

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Q: A particle has a mass of 0.3 times the mass of an electron. It is made to move at a speed of 0.65c.…

A: Given: The mass of the particle is 0.3 times of mass of the elctron. The speed of the particle is…

Q: A small meteor, moving through the Solar at a speed of 0.70 c relative to the Earth, has a mass of…

A: Given data:  Speed (V) = 0.70 c Mass (m) = 10.2 kg c = 3×108 m/s

Q: How much mass does an electron gain when accelerating to a kinetic energy of 500Mev

A:

Q: What is the speed of a particle whose momentum is mc?

A: We know that, relativistic momentum is, p=γmv   It is given that, the particle's relativistic…

Q: What is the classical and relativistic momentum of an object with a mass of 5 kg moving at a speed…

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Q: 7. 37.32 · If a muon is traveling at 0.999c, what are its momentum and kinetic energy? (The mass of…

A: Write the given values with the suitable variables. v=0.999cm=207me=2079.1×10-31 kg=1.884×10-28 kg…

Q: In the lab frame, two protons are moving away from each other at equal speed. In the rest frame of…

A: Let us assume that the earth's rest frame is S, Proton 1's frame is S'. The velocity of Proton 1…

Q: What is the speed of an electron having the same momentum with a proton having speed 0.003c?

A: The solution is given below

Q: An electron whose momentum (885 keV/c). Therefore it has kinetic energy ( keV) is •... ....

A:

Q: An airplane has rest length 40.0 m and speed 630 m/s. To a ground observer, (a) by what fraction is…

A: (a) The expression for the length contraction is:

Q: A rocket is traveling at 0.3 times the speed of light. If it's speed is doubled, by what factor does…

A: Velocity of rocket (v) = 0.3 x C; C is speed of light = 3 x 108 m/s Velocity of rocket is,  V = 0.9…

Q: What is the momentum in kg m/s of a proton when it is moving with a speed of 0.60c? ______…

A: mass of proton (m) = 1.67×10-27kg Speed of proton (v) = 0.60 c where "c" is the speed of light

Q: Pls help ASAP

A: speed (v) = 2.7×108 msLifetime at rest (To) = 2.60×10-8 seconds

Q: The half‑life of a certain subatomic particle at rest is about 1.00×10−8 s. With what speed V is a…

A:

Q: What are the kinetic energy, the rest energy, and the total energy of a 1.0 g particle with a speed…

A: The mass of rhe particle is m=1.0 g×1 kg1000 g=0.001 kg. The speed of the particle is…

Q: What is the speed of an electron having the same kinetic energy with a proton with speed 0.006 c?

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Q: kinetic energy for an electron

A:

Q: How fast must a meterstick be moving if its length is measured to shrink to 0.443 m? Xc What is the…

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Q: A particle of mass m0 travels at a speed 0.28c       At what speed will its momentum be doubled

A: