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An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 85°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
A block of mass m = 600 g is released from rest and slides down a frictionless track of height h = 59.9 cm. What is the value of the spring constant k
How much work the power plant produces in a day. How much energy is discarded to low temperature source in a day.
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.82 of the person's regular weight, Find the direction of the acceleration
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
There is a beam that weighs 1500 kilograms and is twenty meters in length. It has a 15000 kilogram mass on the right side, five meters from the center of gravity. obtain the net tension of each brace that is holding up the beam on both sides.
determine the angle below the horizontal that you must aim your spear gun in order to catch dinner. Suppose the spear gun barrel is 1.70 m above the water surface, the fish is 1.40m below surface, and the spear travels in a straight line all the w..
A bat strikes a 182g ball with a force of 109-N at an angle of 57° above the horizontal. What is the ball's vertical acceleration (positive for upward, negative for downward).
A 125 g wire is held under a tension of 218 N with one end at x = 0 and the other at x = 12.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 12.0 m. At time t = 25.5 ms, pulse 2 is sent along the wire from the end at x = 0. A..
A proton accelerates from rest through 1500 volts. the proton then enters a region of space where the magnetic field is 0.3 tesla (and this field is perpendicular to the velocity). calculate the radius of the resulting circular motion?
A particle of mass M moves in one dimension along the positive x axis, under the influence of two forces. The first force is a constant force, with magnitude B and direction toward the origin. The second force is an inverse square law, with magnitude..
A solar cell generates a potential difference of 0.094 V when a 560 ? resistor is connected across it, and a potential difference of 0.14 V when a 1100 ? resistor is substituted. What are the emf of the solar cell
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