A spaceship fires a missile toward a second spaceship at 0.950c; the missile approaches the second ship at 0.750c. Describe how the ships are moving with respect to one another.

Which of the following describes how a microwave heats food

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excesselectrons is typical. what is the magnitude of the electric forceon a protein with this charge in a 1500 n/c electric field?

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.