Recent content by Payne0511

Homework Statement A man pushes on a piano with mass 190 {\rm kg} so that it slides at constant velocity down a ramp that is inclined at 15.8^\circ above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes...

Homework Statement An adventurous archaeologist crosses between two rock cliffs by slowly going hand-over-hand along a rope stretched between the cliffs. He stops to rest at the middle of the rope . The rope will break if the tension in it exceeds 2.80×10^4 N, and our hero's mass is 91.0 kg...

Homework Statement A statue is to be 'scaled down.' It will have its size changed without changing its shape. It starts with an initial volume of 4.25 m^3 and ends up with a final volume of 0.250 m^3. If the height of the original statue was 215 cm, calculate the height of the smaller...

Homework Statement div(grad f x grad g)=0. I need to prove this somehow. Homework Equations The Attempt at a Solution I don't really know where to even start this at >.< any help is greatly appreciated.