Superman is flying 54.5 m/s when he sees
a train about to fall into a river 850 m
away. He must reach the train in 4.22 s.
What acceleration does he need?
(Unit = m/s^2)

What is the fate of the electrons that interact with a specimen in an electron microscope?

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?