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150 ml of water at 5.00C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 6.00. How much heat energy is exhausted into the room as the water is changed to ice at -15.0C in KJ?
a proton moves in a circle with a speed of 280 m/s through a uniform magnetic field of 2t directed perpendicular to the circular path. compute the orbital radius of the proton
A student notices that 38 mm f11 appears near the lens of an inexpensive camera. What is the focal length of the lens. What is the diameter of the diaphragm opening
A sinusoidal voltage ?v = (75 V) sin (140t) is applied to a series RLC circuit with L = 20 mH, C = 100 ?F, and R = 46 ?. What is the impedance of the circuit
The tires of a car make 51 revolutions as the car reduces its speed uniformly from 95km/h to 38km/h. What was the angular acceleration of the tires
An upright object is placed a distance in front of a converging lens equal to twice the focal length (f1) of the lens. On the other side of the lens is a converging mirror of focal length f2 separated from the lens by a distance 2(f1+f2).
A 70 turn coil of radius 4.6 cm rotates in a uniform magnetic field having a magnitude of 0.45 T. find the magnitude of the maximum torque exerted on the coil
A ball is thrown horizontally from the top of a 55 m building and lands 105 m from the base of the building, How long is the ball in the air in seconds
A piece of tin has a mass of 25g and a volume of 4.3cm^3 a)what is the mass of 1 cm^3 b) what is the volume of 1g of tin c) what is the density of the tin d) what is the mass of 34cm^3 of the same type of tin e) what is the volume of 130g of the s..
q1. to push a 47.0-kg crate up a frictionless incline angled at 34.0deg to the horizontal a worker exerts a force of
A ‘U' shaped pipe contains a liquid that is sealed at both ends by pistons. Determine the downward force
Using the Equation of Hydrostatic Equilibrium, show that if we measure the pressure at the base of the atmosphere, Use the answer in the previous part to write an expression for the total mass of Earth's atmosphere
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
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