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Liquid water is contained in an insulated rigid container. An electrical resistance heater is inside the device, is supplied with 48 volts, and draws 6 amps during operation. A shaft passes through the wall of the container; a propeller located inside the cylinder is mounted on the shaft. The shaft is connected to a motor, located outside the container, that produces 35 Newton-meters of torque and operates at 1800 rpm. Heat is transferred from a high temperature object to the water through a part of the container base that is not insulated. The rate of heat transferred is 225 Watts. What is the rate of change of energy of the water in the container?
Plot the moment about B for 320mm
what is differential levelling? list the procedure for carrying out a differential levelling exercise where one point
energy is added to a piston cylinder arrangement, and the piston is withdrawn in such a way that the quantity PV remains constant. the initial pressure and volume are 200kpa and 2m3, respectively. the final pressure is 100kpa, calculate the work d..
A mixture of dry air and water vapor is at a temperature of 21C under a pressure of 101.3 kPa.The dew point temperature is 15C.(Ps= saturation pressure at 15C=1.7044 kPa;Pd=saturation pressure at 21C=2.4861 kPa) find humidity ratio and relative hu..
distance per tank of gas a car with a 20-gallon gas tank averages 21.5 miles per gallon when driven in own and 26.8
A ball is thrown vertically up with a velocity of 91 ft/sec at the edge of a 190-ft cliff. Calculate (a) the height h to which the ball rises and (b) the total time t after release for the ball to reach the bottom of the cliff.
a 2 kg block of wood rest on the table top. A 7g bullet is shot straight up through a hole inthe table beneath the block. the bullet lodge in the block and the flies 25 cm above the table top. how fast was the bullet going initial?
a nuclear power plant has an electrical power output of 1800 mw and operates with an efficiency of 30. if excess
calculate the quality of the system to begin with. calculate the amount of liquid water to begin with. calculate the heat transfer during the heating process.
the volume of a cylinder is to be determined from measurements of the diameter and length. if the length and diameter
a particle which moves in two-dimensional motion has coordinates given in inches by x t2 - 4t 20 and y 3 sin 2t
Determine the maximum horizontal displacement s of the block. Each of the two springs has a stiffness of k = 2500N/m and an unstretched length of 0.15 m.
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