1. Which of the following is/are inertial reference frame/s? I. A satellite orbiting Earth II. A rocket accelerating upward III. A freely falling spaceship on Mars A. I. only В. I. only C. I. and III. only D. II. and III. only

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1. Which of the following is/are inertial reference frame/s?
I. A satellite orbiting Earth
II. A rocket accelerating upward
III. A freely falling spaceship on Mars
A. I. only
В. I. only
C. I. and III. only
D. II. and III. only
2. Which of the following are necessarily the same as measured in two inertial refer-
ence frames?
A. Value of the magnetic field at a given point
B. Kinetic energy of an proton
C. Speed of particle in vacuum
D. Spacetime interval of two events
3. What is 4.5 x 10-1º [N] of force in natural units?
A. 1.5 x 10-18
in
B. 5.0 x 10-27
[kg]
С. 1.35 х 10-1
m
[kg`
D. 4.05 x 107
m
4. Mr. Spock witnessed the explosion of Vulcan (Event V) at spacetime co-
ordinates (1.5 x 10² [m] , 2.5 x 1014 [m]) and the explosion of a supernova (Event S) at
coordinates (1.8 x 10² [m] , 9.5 x 1013 [m]). What are the magnitudes of the spatial (Ar)
and time (At) separation of V and S according to Mr. Spock?
A. At = 0.3 x 10² [m] , Ar
B. At = 3.3 x 10² [m] , Ar = 3.45 x 1014 [m]
C. At = 1.55 x 1014 [m] , Ar = 0.3 × 102 [m]
D. At = 3.45 x 1014 [m], Ar = 3.3 x 102 [m]
1.55 x 1014 (m]
Transcribed Image Text:1. Which of the following is/are inertial reference frame/s? I. A satellite orbiting Earth II. A rocket accelerating upward III. A freely falling spaceship on Mars A. I. only В. I. only C. I. and III. only D. II. and III. only 2. Which of the following are necessarily the same as measured in two inertial refer- ence frames? A. Value of the magnetic field at a given point B. Kinetic energy of an proton C. Speed of particle in vacuum D. Spacetime interval of two events 3. What is 4.5 x 10-1º [N] of force in natural units? A. 1.5 x 10-18 in B. 5.0 x 10-27 [kg] С. 1.35 х 10-1 m [kg` D. 4.05 x 107 m 4. Mr. Spock witnessed the explosion of Vulcan (Event V) at spacetime co- ordinates (1.5 x 10² [m] , 2.5 x 1014 [m]) and the explosion of a supernova (Event S) at coordinates (1.8 x 10² [m] , 9.5 x 1013 [m]). What are the magnitudes of the spatial (Ar) and time (At) separation of V and S according to Mr. Spock? A. At = 0.3 x 10² [m] , Ar B. At = 3.3 x 10² [m] , Ar = 3.45 x 1014 [m] C. At = 1.55 x 1014 [m] , Ar = 0.3 × 102 [m] D. At = 3.45 x 1014 [m], Ar = 3.3 x 102 [m] 1.55 x 1014 (m]
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