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In an experiment 70 gram of ice at 0 degrees Celsius is dropped into 300 gram of water at 50 degrees Celsius. Assuming that the calorimeter prevents heat flow to the surroundings, what is the final temperature of thermal equilibirium? Please show work for best and first rating.
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
An object is placed 100 cm in front of a lens of focal length 20 cm. A second lens is placed 35 cm beyond the first, what is the height of the final image
A 12.00 box resting on a horizontal, frictionless surface is attached to a 5 weight by a thin, light wire that passes without slippage over a frictionless pulley. The pulley has the shape of a uniform solid disk of mass 2.5 and diameter 0.560.
four charges are placed at the corners of a square of side 4 cm. What is the electrostatic potential energy of this system relative to infinity
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 25.7° above the horizontal, What is the magnitude of the net torque exerted on the branch by the children
an object of mass m=3.1g and charge q=+48 is attached to a string, find the magnitude of the electric field and the tension in the string
A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250 kg crate. What is the acceleration of the crate if the 750 N forces is maintained after the crate begins to move and coefficient of kine..
The generator at a power plant produces AC at 24000 V. A transformer steps this up to 345,000 V for transmission over power lines. how many turns must there be in the output coil
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
find the moment of inertia about the z axis of the hemispherical shell of z= (2^2-x^2-y^2)^(1/2), derive the unit normal vector for surfaces given by y=g(x,z_ x=h(y,z)
A 1.1 kg birdfeeder hangs from a horizontal tree branch. The birdfeeder is attached to the branch at a point that is 1.0 m from the trunk. where the branch attaches to the trunk
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