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A 115.08 g ice cube at -15°C is placed in an aluminum cup whoseinitial temperature is 74°C. The system comes to an equilibrium temperature of 20°C. What is the mass of the cup?
a toroidal selenoid has inner radio r1 15.0 cm and outer radius r2 18.0 cm. the selenoid has 250 turn and carries a
Given the angular speed omega, find out the radius R(omega) at which the mass rotates without moving toward or away from the origin. Determine the radius in terms of k, L, M, and omega.
A 450 N ladder rests against a smooth wall, What is the friction force on the ladder at its base
An airplane is flying with a velocity of 93.0 m/s at an angle of 22.0^circ above the horizontal. When the plane is a distance 119 m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
If the heat necessary to warm 855 g of water from a temperature of T1 = 24.0 °C to T2 = 80.0 °C were somehow converted to translational kinetic energy of this amount of water
A hydraulic jack has an input piston of area 0.050 m^2 and an out put piston of area 0.70m^2. How much force on the input piston is required to a lift a car weighing 1.2 * 10^3 N
An unstrained horizontal spring has a length of 0.37 m and a spring constant of 340 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes.
an air gap capacitor is charged up to 10 v and then disconnected. if a material is added to the gap between the plates
a piano string is under a tension of t 778n. when struck the wave has a period of t 0.6ms and a wavelength of
Three resistors {R1 = 12.0 ?, R2 = 18.0 ?, and R3 = 36.0 ?} are connected in parallel, and in turn connected to a 70.0 V source with an internal resistance of 1.00 ?. Determine the equivalent resistance of the combination
Old naval ships fired 10kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, as otherwise the heavy cannon would go careening across the deck of the ship.
A string with a mass of 6.00 g and a length of 7.00 m has one end attached to a wall; the other end is draped over a pulley, what is the fundamental frequency of vibration
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