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A 3 liter pitcher of tea is at a room temperature of 70 degrees Farenheit. You pour 0.2 kg into a Styrofoam cup. How many ice cubes at 32 Degrees farenheit, each 0.025kg, must be added to cool your tea to 0 degrees Celsius?
In a physics lab, a student accidentally drops a 21.0-g brass washer into an open Dewar of liquid nitrogen at 77.2 K. How much liquid nitrogen boils away as the washer cools from 291 K to 77.2 K? The latent heat of vaporization for nitrogen is 199.1 ..
A proton moves in a circular path perpendicular to a 1.19 T magnetic field. Calculate the energy of the proton in eV
An all-electric car (not a hybrid) is designed to run from a bank of 12.0-V batteries with total energy storage of 2.10 X 10^7 J. How far can the car travel before it is "out of juice"
A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.4 m/s and the tension in the rope is T = 14.9 N. How long is the rope
7 an x-ray tube is operating with energy of 16 keV the produced x-rays photon strike a target and are compton-scattered at an angle of 45 degrees, what is the energy of the scattered x-ray photon in ev
A person notices a mild shock if the current along a path through the thumb and index finger exceeds 80 μA. Find the maximum allowable potential difference without shock across the thumb and index finger for a dry-skin resistance of 4 x 10^5 Ω.
Given a rod with + 2 micro C and a sphere with a charge of -2 micro C ,how many electrons must be added to the rod from the sphere get an overall charge of -5 micro C on the rod
A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of ? = 55..
A star similar to our sun radiates energy at the prodigious rate of4.6 1026 W. At what rate does this star convert mass into energy
A large, flat, horizontal sheet of charge has a charge per unit area of 8.40 µC/m2. Discover the electric field just above the middle of the sheet.
Van hits concrete support In a crash test, a van collides with a concrete support. The stopping time interval for the collision is 0.12 s, and the impulse exerted by the support on the van is 6400 N?s. Determine the change in momentum
Two rectangular pieces of plane glass are laid one upon the other on a table. A thin strip of paper is placed between them at one edge, Find the angle of the wedge
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