An 85 kg man pushes a 32,000 ton wall for 240 seconds, but it does not move. How much work does he do on the wall?

Which of the following is powered by nuclear energy? A) aircraft B) automobiles C) trains D) submarines

If the number of predators in the environment increases, what happens to the number of prey organisms?

If you held this string at one end and twirled it in a circle above your head, so that the object moves in a plane parallel to the ground, what is the maximum speed that the object at the end of the string can have without breaking the string

If a fuse or circuit breaker directly opens a circuit when the current limit is reached, do overload heaters open and break the circuit when their current limit is reached?

Air masses are identified on the basis of temperature and

Where do deep currents flow?

If a car drove 121km/hr on average how far did it travel in 116min?

A 10 kg farm wagon is sitting at the top of a hill that makes a 370 angle with the horizontal when the brake suddenly fails. The cart rolls down the hill for 50 m and then hits a haystack. It plows 2.0 m into the stack before coming to rest.

What is a Geographic test

What is the velocity of a beam of electrons that go undeflected when passing through crossed (perpendicular) electric and magnetic fields of magnitude 1.63*104V/m and 2.50*10-3T, respectively? me=9.11*10-31kg, e=1.60*10-19C.