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A Carnot freezer that runs on electricity removes heat from the freezer compartment, which is at -10.0C and expels it into the room at 27.0C. You put an ice-cube tray containing 360gof water at 18.0C into the freezer. What is the coefficient of performance of this freezer? How much energy is needed to freeze the water?How much electrical energy must be supplied to the freezer to freeze the water?How much heat does the freezer expel into the room while freezing the ice?
In Young's double slit experiment, 422 nm light gives a third-order bright fringe at a certain location on a flat screen. What is the longest wavelength of visible light
Two comets, each of mass 6500 kg and traveling 87 m/s in opposite directions, collide head-on and come to rest. How much energy is produced in this collision
A 52.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
A crate is dragged 3m across a rough floor at a constant speed by a worker applying 500N at an angle of 30 deg above the horizontal. How many forces act on the crate
A wire 2.0mm in diameter and 4cmlong is connected to a 12V battery. If the resistivity of the wire is 3.5 x 10^-5 ohm-m; calculate the resistance of wire and its current
One of the asteroids, Asty, looks like an elongated potato. Surprisingly it has a tiny (compared to Asty) spherical moon! what must your orbital speed be
What is the electrical force between a two charges that each has a charge value of .0004 C each that are 2 meters apart
A proton of mass m is accelerated up to a kinetic energy K and then collides with a stationary proton at rest. All that is left after the collision is a new particle of mass M.
An object is acted on by a drag force with a magnitude that is proportional to the speed. The object accelerates downward at 3.00 m/s2 when it is falling with a speed 20.0 m/s. What is the terminal speed of the object as it is falling.
question1illustration on eratosthenes process if two observers are due north and south of each other and are detached
A cylindrical vessel 16 feet in diameter and 15 in height is constructed to withstand a maximum internalpressure of 500 psia. What is the maximum weight of nitrogen
A 40 kg girl, standing at rest on the ice, gives a 60 kg boy, who is also standing at rest on the ice, a shove, What is the girl's speed
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