Questions from College Physics

Q: An electron has a momentum with magnitude three times the magnitude of

An electron has a momentum with magnitude three times the magnitude of its classical momentum. (a) Find the speed of the electron. (b) How would your result change if the particle were a proton?

Q: Calculate the classical momentum of a proton traveling at 0.990c

Calculate the classical momentum of a proton traveling at 0.990c, (a) Neglecting relativistic effects. (b) Repeat the calculation while including relativistic effects. (c) Does it make sense to negle...

Q: An unstable particle at rest breaks up into two fragments of unequal

An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.50 x 10-28 kg and that of the heavier fragment is 1.67 x 10-27 kg. If the ligh...

Q: A spaceship moves past Earth with a speed of 0.900c

A spaceship moves past Earth with a speed of 0.900c. As it is passing, a person on Earth measures the spaceship’s length to be 75.0 m. (a) Determine the spaceship’s proper length. (b) Determine the ti...

Q: Spaceship R is moving to the right at a speed of 0

Spaceship R is moving to the right at a speed of 0.70c with respect to Earth. A second spaceship, L, moves to the left at the same speed with respect to Earth. What is the speed of L with respect to R...

Q: True or False: People traveling near the speed of light relative

True or False: People traveling near the speed of light relative to Earth would measure their lifespans and find them, on the average, longer than the average human lifespan as measured on Earth.

Q: An electron moves to the right with a speed of 0.

An electron moves to the right with a speed of 0.90c relative to the laboratory frame. A proton moves to the left with a speed of 0.70c relative to the electron. Find the speed of the proton relative...

Q: A spaceship travels at 0.750c relative to Earth. If

A spaceship travels at 0.750c relative to Earth. If the spaceship fires a small rocket in the forward direction, how fast (relative to the ship) must it be fired for it to travel at 0.950c relative to...

Q: A spaceship is moving away from Earth at 0.900c when

A spaceship is moving away from Earth at 0.900c when it fires a small rocket in the forward direction at 0.500c relative to the spaceship. Calculate the rocket’s speed relative to Earth.

Q: Two identical spaceships with proper lengths of 175 m are launched from

Two identical spaceships with proper lengths of 175 m are launched from Earth. Spaceship A is launched in one direction at 0.500c and spaceship B is launched in the opposite direction at 0.750c. (a) W...