Chapter 12

Which of the following is not a zero-mass particle?

If you travel at 50% of the speed of light, your mass in increased by a factor of

If Muller discovers a new, energetic particle (the "Mulleron") that has zero mass, then we can conclude that the Mulleron

The observation of neutrino decay proves that

In everyday life, we don't see the effects of relativity because

Electrons cannot go as fast as light because

tachyons

When the velocity of an object with rest mass mo approaches the peed of light, its energy approaches:

When a person moves at a velocity near the speed of light, which of the following are NOT true- compared to a person at rest? (Choose all that apply.

According to relativity theory, the energy of an object of mass mo that is moving at velocity v is

We measure that a particle travels at the speed of light. We conclude that (be careful, only one answer is correct)

Jim and Mary are both from Berkeley and are the exact same age. Jim travels at a velocity of 65 miles per hour to Los Angeles and waits there. Mary drives the next day at 70mph. When she gets to Los Angeles, who is older?

one person travels at 99% the speed of light for 7 years, how much younger will he be than his identical twin who didn't travel?

In the twin effect, the traveling twin is

The most accurate equation for energy is

When a radioactive rock travels near the speed of light, its mass

When the velocity of a proton is half of the speed of light, then the gamma function is approximately equal to

Jane and Tom synchronize their watches on Earth. Jane remains on the Earth while Tom takes a round-trip to Pluto at near light speed. When they get back together and compare the time as displayed on their watches, whose watch will appear to have run fast?

A moving object is

An astronaut Alice makes a round-trip 3/5 the speed of light. Her twin Bob stays on the Earth. When Alice returns, Bob is

The speed of a mass-less particle (careful: this may be a trick question)

neutrinos are believed to have mass

Which of the following quantities do not depend on velocity?

If the velocity is (12/13)c, then the gamma function is

At very high speed, all of these change except

A radioactive particle has a half-life of 1 second. If it moves at 3/5 the speed of light, its new half-life will be

The photon has a rest mass approximately equal to

When a particle approaches the speed of light, its mass approaches

The effects of special relativity must be taken into account for

Identify which are the particles that pass easily through the Earth. (Choose all that apply)

As the velocity of a moving object approaches the speed of light, what happens to its energy?