Some examples from this set of practice questions
1.
what is special relativity about
Answer: Special relativity: describes the relationship between space and time (based on Einstein’s postulates)
2.
what are einstein's two postrulates
Answer: - principle of relativity: the laws of physics are the same in all inertial reference frames - principle of the constancy of the speed of light: the speed of light in free space has the same value in all inertial reference frames
3.
describe the formula for the relativity of time
Answer: ∆t= (∆t_0)/√(1-u^2⁄c^2 )
4.
describe the formula for the relativity of lenght
Answer: L= L_0 √(1-u^2⁄c^2 )
5.
describe the formula for the relativistic addition of velocities
Answer: v= (v_0+u)/(1+ v_0 u/c^2 )
6.
what is the lorentz factor
Answer: γ=1/√(1-u^2/c^2 )
7.
describe the formulas for the lorents transformation of the space-time coordinates
Answer: x^'= (x-ut)/√(1- u^2⁄c^2 )= γ(x-ut) y^'=y z^'= z t^'= (t- ux⁄c^2 )/√(1- u^2⁄c^2 )= γ(t- ux⁄c^2 )
8.
describe the formulas for the inverse lorentz transformation of the space-time coordinates
Answer: Inverse Lorentz transformation x= γ(x^'+ut') y=y' z=z' t= γ(t^'+ux^'/c^2 )
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