How to calculate equilibrium if you are not given how many miles there are of each substance

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.