A750 n man pushes on a 500,000 cm wide wall for 250 s but it does not move. how much work does he do on the wall if he angles his arms 45 degrees from the wall?

Zero work

Explanation:

The Work done by a Force refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path .  

It should be noted that it is a scalar magnitude, and its unit in the International System of Units is the Joule (like energy). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter.

In this sense, when you push an object and it does not move (as this case with the wall) there is no work.

the answer is to check all of them! they all apply well at least i think so!