Multiple Choice
A star is moving toward Earth with a speed of 0.9 c (90% the speed of light) .It emits light,which moves away from the star at the speed of light.Relative to us on Earth,the speed of the light moving toward us (emitted by the star) is
A) c.
B) 1.9 c.
C) 1.2 c.
D) 0.98 c.
Correct Answer:

Verified
Correct Answer:
Verified
Q27: The rest mass of a particle depends
Q28: A particle is moving at about 0.86
Q29: Calculate the speed at which a 0.272
Q30: As measured in Earth's rest frame,a spaceship
Q31: An electron has a speed of 0.643
Q33: A spaceship is moving between two distant
Q34: A hydrogen atom and a neutron fuse
Q35: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2706/.jpg" alt=" A right-angled construction
Q36: A rocket is moving at 1/4 the
Q37: Calculate the amount of energy needed to