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A vapor-compression cycle refrigeration system using R-22 has an evaporator temperature of -20.0°C and a condenser temperature of 20.0°C. The refrigerant exits the compressor as a saturated vapor and exits the condenser as a saturated liquid. Determine
a. The isentropic coefficient of performance of this system.
b. The coefficient of performance of a Carnot refrigerator operating between the same temperature limits.
c. The "tons" of isentropic refrigeration per unit mass flow rate of refrigerant.
The acceleration due to gravity at the surface of a planet is 18 m/s2. find the speed of the satellite to maintain this stable orbit
Particle A carries a charge of 5.0 uC, Particle B is 12.0cm, Find the magnitude and direction of the electric force on A due to B
what is the magnitude of an objects average velocity if an object moves from a point with coordinates x 2.83 m y
A worker drags a 150lb. crate across the floor by pulling on a rope inclined at 17degrees above the horizontal. What tension in the rope is required to start the block moving
The weight of passengers on a roller coaster increases by 60% as the car goes through a dip with a 38m radius of curvature
A 0.700-kg ball is on the end of a rope that is 2.40 m in length. The ball and rope are attached to a pole and the entire apparatus, What is the tangential speed of the ball
The United States and South Korean soccer teams are playing in the first round of the World Cup. find its velocity at the time of interception
Which of the following observations support the statement that “Every system tends to adjust by itself to have minimum Potential Energy”
A household water supply taps off the water main. The tap is a copper tube with a 1inch inside diameter. What will the flow be from the pipe
An emf is induced in a conducting loop of wire 1.11m long as its shape is changed from square to circular.Find the average magnitude of induced emf if the change in shape occurs in 4.03s and the local 0.135-T magnetic field is perpendicular to the ..
The ammonia molecule NH3 has a permanent electric dipole moment equal to 1.47 D, where 1 D = 1 debye unit = 3.34 x 10-30 C-m. Calculate the electric potential in volts due to an ammonia molecule at a point 65.0 nm away along the axis of the dipole..
A helicopter has blades of length 4.0 m, rotating at 1.0 rev/s about a central hub, find the emf induced between the blade tip and the central hub
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