A load-bearing piston in a certain hydraulic system has an area 10 times as large as the input piston. If the larger piston supports a load of 2,500 lbs, how large a force must be applied to the input piston?

photocells convert light energy to electricity

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

we need to know the time interval during which the force acts. impulse of force = momentum change

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it