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A 3-ft3 rigid tank initially contains refrigerant-134a at 100 psia and 100 percent quality. The tank is connected by a valve to a supply line that carries refrigerant-134a at 140 psia and 80°F. The valve is now opened, allowing the refrigerant to enter the tank, and is closed when it is observed that the tank contains only saturated liquid at 120 psia. Determine
(a) The mass of the refrigerant that entered the tank, (b) the amount of heat transfer with the surroundings at 110°F, and
(c) The entropy generated during this process.
A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.00 s later. Find the depth of the well if the air temperature is 6.0°C
A community plans to build a facility to convert solar radiation to electrical power. They need 3.00 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to us..
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
a photon of wavelength 0.55000 nm strikes a free electron that is initially at rest. the photon is scattered straight
An object originally at rest breaks into two pieces as the result of an explosion. One piece (m2) has four times the kinetic energy of the other piece (m1). What is the ratio of the masses of the two pieces?
An astronauts life to to her ship comes loose ans she finds herself stranded at 100m from the ship. how long does it take her to coast back to his ship
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
A 4 kilogram block (block A) is released from rest at the top of a 20 meter long frictionless ramp that is 4 meter high. Determine the value of Momentum for the blocks
The electromagnetic waves used in a microwave oven have awavelength of 12.24 cm.
An object is located 55 centimeter from a concave mirror of focal length 96 centimeter. The object is 6.7 centimeter tall. Evaluate how tall is the image
If a visible photon by wavelength 434 nm is emitted from an atom in a hydrogen gas lamp, what energy state was the atom in before the photon was emitted? That is, what was the number for that state?
a block with mass m 0.4 kg oscillates with amplitude a 0.4 m at the end of a spring with force constant k 7 nm on a
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