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A 100 g ice cube having an initial temperature of 0oC is put into an insulated cup containing 200 g of water. After a long time, all the ice is melted and the remaining water is at 0oC. Assuming no heat flows into or out of the cup, what was the initial temperature of the water?
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 9350 m/s and protons move to the left at 1681 m/s. The particles are evenly spaced with 0.085..
A proton, initially traveling in the +x-direction with a speed of 5.50×10^5m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 4.02×10^7s
One end of a brass bar is maintained at 305 oC, while the other end is kept at a constant, but lower, temperature. What is the temperature of the bar at a point 0.129 m from the hot end
A simple pendulum has mass 1.28 kg and length 0.600 m. What is the period of the pendulum near the surface of Earth
An insulated container of negligible mass holds 0.200 kg of water and 0.05kg of ice in thermal equilibrium at atmospheric pressure. calculated the specific heat capacity c of heat
Organs typically have several dissimilar sets of pipes tuned to the same pitches. The dissimilar sets of pipes, known as "stops," make different sounds. Imagine that an organ has a pipe in the Bourdon stop which is exactly tuned to middle C with a fr..
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
An archer pulls her bowstring back 0.370 m by exerting a force that increases uniformly from zero to 227 N. (a) What is the equivalent spring constant of the bow?
Calculate the magnetic force per meter between two such lightning bolts separated by 10 meters. (This is mainly to give a feeling for the strength of the magnetic field)
if the current through a loop radius 50 cm is 2A, what is the magnetic field produced by the loop wire
A dockworker applies a constant horizontal force of 89.0 n to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
The platform has a radius of 5 meters and at time=0, the angular velocity is rad/s and the angular acceleration is 0.5 rad/s. determine the velocity and the acceleration
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