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A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 6.88 x 103 W.
(a) How much energy does it deliver into a home during 2 h of continuous operation?
(b) How much energy does it extract from the outside air?
how many days would be required to move one of the charges.
A Ferris wheel with radius 14.0m is turning about a horizontal axis through its center. What is the magnitude of the passenger's acceleration as she passes through the lowest point in her circular motion
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
A point particle that has a charge of 18.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 14.8 cm, y = 0. The electric force on a point particle that has a charge of 7.4 µC at x = 29.6 cm, y = 0 is -(19.7)..
What is Lagrangian for the system
A 52-kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s, determine her altitude as she crosses the bar
A coil of wire with 80 turns and a cross-sectional area of .03m^2 lies perpendicular to a magnetic field of magnitude 1.5T. what is the average value of the voltage induced in the coil
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
A rock is suspended from the string and moves downward at constant speed. Which statement is true concerning the tension in the string if air resistance is ignored.
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 25.7° above the horizontal, What is the magnitude of the net torque exerted on the branch by the children
A 529 kg automobile slides across an icy street at a speed of 66.0 km/h and collides with the parked car which has a mass of 856 kg. The two cars lock up and slide together. What is the velocity of the two cars just after they collide.
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
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