11. A tau particle has a rest mass of 3.18×10-"kg. Suppose a tau particle is traveling at 1.25x10° m in the lab's inertial frame. a. What is 7, in the lab's frame? b. What is the magnitude of the momentum of the tau particle in the lab's frame? c. What is the rest energy of the tau particle?

7. Borg ships are cubical. A Borg ship is approaching earth. According to an observer on earth, the Borg ship is 1000 m high, 1000 m wide, and has a depth of 100 m. Earth launches a photon torpedo to destroy the Borg ship. The torpedo is launched from earth with a velocity of 0.95c. The torpedo was set on earth to go off in 2 hr. 999 Earth 0.95 c V 1 100 m 1000 m a) With what velocity is the Borg ship approaching earth? b) What is the speed of the torpedo as measured by an observer on the Borg ship? c) According to an observer on the Borg ship, how long will it take the torpedo to explode?

1. If the velocity of your spaceship goes from 0.3c to 0.6c, then your mass will increase bya. 19%b. 38%c. 74%d. 100%e. 200%

4. A lkg mass initially at rest is accelerated by a 30N force, continuously, for a full year. How fast is it going at the end of that year? (If your answer is larger than the speed of light, you've done something wrong!). Hint: F = Ap/At.

H2. Suppose a particle of constant mass m with position x > 0, moves in one space dimension under the influence of the gravitational force of another point particle of constant mass M sitting at x = 0, i.e. the attracting force is F: (a) Using Newton's second law, show that d -mx². dt GmM x² i. GmM X = 0. dv dv (i.e., the total energy, sum of kinetic and potential energy, is conserved). (b) Using the change of variables var dr, solve the equation of motion and determine the = dx velocity of the particle v(x) as a function of x assuming it starts with zero velocity at xo. Does the particle's speed in x O depend on the initial position? dt' =

9. In a proton linear accelerator, protons are accelerated to have a kinetic energy of 5.50 relativistic momentum? t kg.m/s 60 ssf60 s ssf60 ssfot 09588 098 10-11 J. What is their ssf60 ssfo 093

Qno7 solve asap. Physics expert plz suggest

In Lorentz transformation appears the Lorentz factor denoted by the Greek letter Y. This Lorentz factor Select one: a. depends on the relative speed between two inertial reference frames. b. depends on the location of the event as seen by two inertial reference frames. depends on the velocity of the particle on which we want to perform the transformation. c. d. depends on the speed of the particle on which we want to perform the transformation. e. is an invariant constant of nature. ⚫ f. depends on the relative velocity between two inertial reference frames. ×

The mass of a proton is 1.67 × 10-27 kg. A.  Find the rest energy in joules.  B. Find the rest energy in mega-electron volts.

What is proper time? A. The time calculated for the person moving at relativistic speed. B. The longest possible time interval between two events. C. The time measured by the clock that travels with the observer. D. The time measured by a light clock.