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(1) A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Energy is then added to the system by an electric heater until all the liquid is vaporized. The environment is at 99 kPa and 2°C. Calculate the change in energy of the contents in kJ.
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles
Two cars collide head on while each is traveling at 90. What is the temperature increase of each car
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
A source produces sound waves of time period .001 second and wave length of 20 cm. find the time taken by sound waves to travel a distance of 800 metres.
The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find out the final speed of puck A also Find out the final speed of puck B. m/s
An RC circuit with 2.50 ?F and 7.60 M?? includes a 6.00 volt source, What is the time constant for charging the capacitor
Two wires, each of length 1.2 m, are stretched between two fixed supports. Find the speed at which the individual waves travel on each wire
Travelling at a speed of 17.10 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.740. What is the speed of the automobile after 1.81 s have el..
q1. a thermos contains 161 cm3 of coffee at 82.0 degc. to cool the coffee you drop two 10.8-g ice cubes into the
The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
A golf ball strikes a hard, smooth floor at an angle of 32.5 ° and rebounds at the same angle, What is the magnitude of the impulse applied to the golf ball by the floor
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