How do you know the pole on the left is the south pole and the pole on the right is the north pole?

Which statement best describes how private industry decides where to spend the money on research and development

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain