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The pumps coefficient of performance is 3.8, and the heat pumpdelivers 7.54 MT of thermal energy to the building each hour. Ifthe ehat pump is a carnot engine working in reverse, at what ratemust work be done to run the heat pump?
A 31.0 omegacap.gif resistor and an 16.0 omegacap.gif resistor are connected in series across a 15.0 V battery. What is the voltage out of the battery
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. how high is the hotel room from the ground
A ball having a mass of 170 g strikes a wall with a speed of 5.0 m/s and rebounds with only 50% of its initial kinetic energy. find the speed of the ball immediately after rebounding
A 7700-kg boxcar traveling 18m/s strikes a second car. The two stick together and move off with a speed of 5.0m/s. What is the mass of the second car
Two hockey players strike a puck of mass 0.169 kg with their sticks simultaneously, exerting forces of 1.17 103 N, compute the instantaneous acceleration of the puck
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
a police car is traveling at a velocity of 16.0 ms due north when a car zooms by at a constant velocity of 45.0 ms due
Give at least 3 examples from the electromagnetic spectrum (uses and dangers). Describe the three ways that electricity and magnetism are observed to interact. Describe how microwaves heat water.
A point charge q = -2.4 nC is initially at rest adjacent to the negative plate of a capacitor, What is the kinetic energy of the point charge just before it hits the positive plate
A mass on a string of unknown length oscillates as a pendulum with a period of 6 s. What is the period in the following situations, determine The mass is doubled
if the radius of a blood vessel is reduced by cholesterol deposits to 90 of its original value flow will decrease. by
My flashlight beam makes an angle of 60° with the surface of the water before it enters the water. what angle does the beam make with the surface
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