Light is reflected from a moving mirror. How is the reflected light different from the incident light, and how is it the same?

An object is moving vertically, will any contraction take place in a horizontal direction?

The amount of water vapor in the air is called _____.

Which list is in the correct order of atmospheric layers starting from Earth's surface? (a) Thermosphere, stratosphere, troposphere, mesosphere, exosphere, (b) Exosphere, troposphere, mesosphere, stratosphere, thermosphere, (c) Mesosphere, stratosphere, thermosphere, exosphere, troposphere, (d) Thermosphere, troposphere, stratosphere, exosphere, mesosphere, (e) Troposphere, stratosphere, mesosphere, thermosphere, exosphere.

If stationary observers measure the shape of a passing object to be exactly circular, what is the shape of the object when viewed face-on by observers on board the object, traveling with it?

Which atmospheric layer is closest to Earth's surface? A. mesosphere B. stratosphere C. thermosphere D. troposphere

What is El Nino? What are some of its effects?

How do the measured densities of a body compare at rest and in motion?

Pretend that the starship Enterprise in the previous problem is somehow traveling at $c$ with respect to the Earth, and it fires a drone forward at speed $c$ with respect to itself. Use the equation for the relativistic addition of velocities to show that the speed of the drone with respect to the Earth is still $c$.

What classical idea about space and time did Einstein reject?

If you lived in a world where people regularly traveled at speeds near the speed of light, why would it be risky to make a dental appointment for $10: 00 \mathrm{AM}$ next Thursday?

Does the equation for time dilation show dilation occurring for all speeds, whether slow or fast? Explain.

An astronaut is travelling in space at speeds close to the speed of light. Compare the time being spent in space by the astronaut with the time elapsing on Earth.

Because of time dilation, you observe the hands of your friend's watch to be moving slowly. How does your friend view your watch: as running slowly, running rapidly, or neither?