In a hydroelectric power plant, water flows from an elevation of 400 ft to a turbine, where electric power is generated. for an overall turbine-generator efficiency of 86 percent, determine the flow rate of water to generate 100 kw of electricity if the irreversible head loss of the piping system between the free surfaces of the inlet and the outlet is 36 ft. take the density of water to be p= 624 ibm/t2 the flow rate of water is

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

Matter that emits no light at any wavelength is called