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A vapor-compression cycle heat pump has been developed that uses R-22 as the working fluid. The evaporator is at 0.00°C and the condenser is at 30.0°C. The refrigerant enters the condenser as a saturated vapor at 0.0800 kg/s and exits as a saturated liquid. The isentropic efficiency of the compressor is 83.0%. Determine
a. The coefficient of performance of this system.
b. The power (in kW) required to drive the unit.
A uniform cylinder of radius 11.8 cm and mass 28.1 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 5.90 cm from the central longitudinal axis of the cylinder. calculate what is the angular speed of the cylinder
A cannonball is shot (from ground level) with an initial horizontal velocity of 33 m/s and an initial vertical velocity of 24 m/s. How high above the ground is the cannonball 3.3 seconds after it is shot
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
a small car collides with a large truck. is the magnitude of the force experienced by the car greater than less than or
A research submarine has a 40.0 cm -diameter window 8.10 cm thick. What is the submarine's maximum safe depth
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 11.0 s. Ignore air resistance. obtain the average mechanical power output of the engine
to measure the acceleration due to gravity on a distant planet an astronaut hangs a 0.055-kg ball from the end of a
The acceleration due to gravity on the Moon is 1/6 that on theEarth. If you place a 2.0 meter long pendulum on theMoon. What is its frequency of oscillation
A cannon tilted up at a 30° angle fires a cannon ball at 80 m/s from atop a 18 m high fortress wall. What is the ball's impact speed on the ground below
a single slit forms a diffraction pattern with the first minimum at an angle of 40 deg from central maximum.
The speed of waves on a guitar string is 113 m/s. What is the fundamental frequency of the string when the effective string length is 68.7 cm?
A clown is using a concave makeup mirror to get ready for a show and is 26 cm in front of the mirror. The image is 70 cm behind the mirror. (a) Find the focal length of the mirror. (b) Find the magnification.
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