An electron has a total energy equal to five times its rest energy. (a) What is its momentum? (b) Repeat for a proton.

Q: -An object of 2 MeV/c2 has a momentum of 1 MeV/c. Find the total energy (in MeV ).

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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 a particle whose kinetic energy is equal to (a) its rest energy and (b) five…

A: (a) The expression of kinetic energy is given by, Ek=mc211-v2c2-1...…(1) Here, m is the mass of the…

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: 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: Give a physical argument that shows it is impossible to accelerate an object of mass m to the speed…

A: Light is the universal speed limit. Nothing can exceed the speed of light.The force should produce…

Q: In the muon decay experiment discussed in Section 2.9 as a verification of time dilation, the muons…

A: Time dilation: When the observer is moving wrt to the event happening then both the frame of…

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

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

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Q: Recall, from this chapter, that the factor gamma (γ) governs both time dilation and length…

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Q: A neutral -meson is a particle that can be created by accelerator beams. If one such particle lives…

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Q: A supertrain of proper length 94 m travels at a speed of 0.93c as it passes through a tunnel having…

A: The Lorentz transformation is the contraction of length l of any object with respect to the moving…

Q: The muon is an unstable particle that spontaneously decays into an electron and two neutrinos. In a…

A: (a). the life time of moving muon is

Q: Take the ratio of relativistic rest energy, E = γmc2 , to relativistic momentum, p = , and show that…

A: The relativistic rest energy is given by,

Q: How fast will a space ship be moving, if the observer on earth notices that the time on the…

A: The equation for the time dilation is given by

Q: If an external force is operating on a system, is it feasible for it to be relativistic at the same…

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Q: An observer on the earth sees a spaceship approaching at 0.52c. The ship then launches an…

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Q: How fast must an object travel for its total energy to be 50% more than its rest energy?

A: Given Data:- Total energy of the object is 50%  more than its rest energy. Required:- Speed of the…

Q: A rod lies parallel to the x axis of reference frame S, moving along this axis at a speed of 0.630c.…

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

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Q: The rest energy and total energy, respectively, of three particles, expressed in terms of a basic…

A: Order of decreasing rest mass

Q: A supertrain of proper length 100 m travels at a speed of 0.95c as it passes through a tunnel having…

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Q: Is it possible for an external force to be acting on a system and relativistic momentum to be…

A: Relativistic momentum P is calculated by multiplying classical momentum by the relativistic factor…

Q: In a lab, two electrons A and B are emitted in opposite directions with velocities +0.6c and -0.7c,…

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Q: An alien spacecraft moving with the speed of 0.30c with respect to Earth, fires photon torpedoes…

A: Given: Alien spacecraft speed, v = 0.30c Speed of the photon torpedo with respect to the spaceship,…

Q: A cube of steel has a volume of 1.00 cm3 and mass 8.00 g when at rest on the Earth. If this cube is…

A: It is given that,

Q: At what speed is a particle’s momentum twice its Newtonian value?

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Q: A spacecraft is measured to be 250.00 m long while it is at rest with respect to an earth-based…

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Q: At what speed does the classical momentum, p=mv, give an error, when compared with the relativistic…

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Q: The positive muon (µ), an unstable particle, lives on average 2.20 x 10 reference) before decaying.…

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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 •... ....

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Q: At what speed is an electron’s total energy 50% more than its rest energy?

A: GIVEN :-            Total energy is 50% more than its rest energy.            i.e  Total energy =…

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: If the kinetic energy of a particle is equal to its rest energy then what must be its speed?

A: Given ,        the kinetic energy of a particle equals to its rest energy                speed (v)…

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: Two identical particles P and Q of rest mass m,, are moving with velocities 5c 2c and 19 in…

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Q: A golf ball travels with a speed of 90.0 m/s. By what fraction does its relativistic momentum…

A: