A block of ice slides down a 45 degree inclined plane in twice the time it takes to slide down a 45 degree frictionless inclined plane.. What is the coefficient of kinetic friction between the ice block and the incline

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

What are the north and south poles of a solenoid change with?

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?