After 2.5 time constants, what percentage of the final voltage, emf, is on an initially uncharged capacitor C, charged through a resistance R?
2 answers
impulse and momentum - a fire hose sends 20 kg of water each second onto a bearing building. If the water leaves the nozzle at 60m/s, what is the force exerted by the water on the building?
(II) An internal explosion breaks an object, initially at rest, into two pieces, one of which has 1.5 times the mass of the other. If 7500 J were released in the explosion, how much kinetic energy did each piece acquire?
1 answer