Asmall crack occurs at the base of a 15.0-m-high dam. the effective area through which water leaves is 3.90 × 10-3 m2.
(a) ignoring viscous losses, what is the speed of water flowing through the crack?
(b) how many cubic meters per second of water leave the dam?

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?

True or false graphs must include scales that increase by the same amount