Relativistic effects such as time dilation and length contraction are present for cars and airplanes. Why do these effects seem strange to us?

Suppose you use the same double slit to perform Young’s double-slit experiment in air and then repeat the experiment in water. Do the angles to the same parts of the interference pattern get larger or smaller? Does the color of the light change? Explain.

A proton has a kinetic energy of 1.0 MeV. If its momentum is measured with an uncertainty of $5.0\%$, what is the minimum uncertainty in its position?

Which of Einstein’s postulates of special relativity includes a concept that does not fit with the ideas of classical physics? Explain.

Find the rest energy in joules and MeV of a proton, given its mass is 1.67 \times 10^{−27} kg.

What is the rest energy of an electron, given its mass is 9.11 \times 10^{−31} kg? Give your answer in joules and MeV.