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The latent heat of fusion for water is 33.5 × 104 J/kg, while the latent heat of vaporization is 22.6 × 105 J/kg. What mass m of water at 0° C must be frozen in order to release the amount of heat that 1.94 kg of steam at 100° C releases when it condenses?
Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. what was his average power output during the race
A quantity of a monatomic ideal gas undergoes a process in which its pressure is increased by a factor of n = 4, What is the heat absorbed by the gas during this process
Two solenoids of radii 2 cm and 5 cm are coaxial. They are each 25 cm long and have 380 and 960 turns, respectively. Find their mutual inductance in mH
A football quarterback is moving straight backward at a speed of 2.0 m/s when he throws a pass to a player 20.0 m straight downfield. How long does it take to get to the receiver
A horizontal spring, with spring constant k, has a mass, m,attached to it and is vibrating horizontally on a friction less surface. Which one of the following statements is CORRECT?
An object hanging in air, as in Figure A below, caused the scale to balance at 0.420 kg. Find the apparent weight of the object when submerged in water
Using the elbow joint as the axis of rotation, determine the magnitude of the net torque acting about the elbow due to the forearm, hand, and ball
A 40 kg child sits 1.3 m away from the center of a merry-go-round. If the merry-go-round is traveling with a radial velocity of .78 rad/s, what is the centripetal force on the child
1the formation of shadows is a consequence of a polarization of lightb rectilinear propagation of lightc fraction
In a double-star system, two stars of mass 6.0 *10^30 kg eachrotate about the system's center of mass at a radius of 2.0 * 10^11m. What is their common angular speed?
Water flows at 0.990m/s from a hot water heater, through a 450-kPa pressure regulator. What is the flow speed in this pipe
A long solenoid with 10.0 turns /cm and a radius of 7.00cm carries a current of 20.0 mA. What is the magnitude of the magnetic field there
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