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Steam enters an insulated pipe at 200 kPa and 200 degrees C and leaves at 250 kPa and 150 degrees C. The inlet-to-outlet diameter ratio for the pipe is D1/D2=1.80. Determine the inlet and exit velocities of the steam.
A merry-go-round is shaped approximately as a disk and has a radius of 2.1m and a mass of 172kg. A girl of mass 35kg, who is initially standing still next to the merry-go-round, steps onto it and rides at the outer edge. What is the new angular vel..
If atmospheric pressure is 29.5 feet of water, what is the pressure in bars at the bottom of a 3 meter deep swimming pool
One mole of an ideal gas does 2500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 28.0 L. Determine the temperature of the gas
A photon with energy 1.85 eV is absorbed by a hydrogen atom. Find the speed of the electron released from the state in part (a) when it is far from the nucleus
A spinning wheel is slowed down by a brake, giving it a constant angular acceleration of 5.20 rad/s^2. What is the angular speed of the wheel at the end of the 2.80-s interval
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
A sound wave with intensity 2.2 10-3 W/m2 is perceived to be modestly loud. Your eardrum is 6.7 mm in diameter. How much energy will be transferred to your eardrum
A luminous object is 5.00 m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object
A 564 Hz sound wave travels through a substance. What is the speed of sound in the substance
a 900.0 N hiker stops 1/3 of the way across a 3600.0 N bridge. Find the normal force acting on concrete supports at each end of the brige
Two waves with identical frequency but different amplitudes A1= 5.0cm and A2 = 3.0 cm, what is the amplitude of the resulting wave if they interfere constructively
A candle is held 6.0 cm from the surface of a reflecting ball, and its image appears three-quarters of its actual size. What is the diameter of the ball
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