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How much does the internal energy (in joules) of a block of metal change (a) when 30 cal of heat is added to it and (b) when 60 cal of heat is taken away from it? Assume the metal's volume to remain constant.
A 13.9-kg monkey is hanging by one arm from a branch and swinging on a vertical circle. obtain the magnitude of the tension in the monkey's arm
A 19.0 -kg box is released on a 37 incline and accelerates down the incline at 0.30 m/s^2. Find the friction force impeding its motion
an electron is shot directly toward the center of a large metal plate that has surface charge density -1.00 × 10-6 C/m2. how far from the plate must the launch point be
A coin placed on a turntable rotating at 33.0 rev/min will stay there if its center is placed no further than 7.2 cm from the axis of rotation. What is the maximum distance the center of the coin can be placed from the axis
A car of mass m is on a frictionless roller coaster track. How hard does the track push on the car at the top of the loop
Assume all temperatures to be exact. Ice (initially at 0 ) is added to 0.50L of tea at 18C to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
question1if a race car completes a mi oval track in s what is its average speed? did the car accelerate? i know what an
question an aquarium 2 m long 1 m wide and 1 m deep is full of water. find the work needed to pump half of the water
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 903 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
A solid, horizontal cylinder of mass 9.0 kg and radius 1.30 mrotates with an angular speed of 6.00 rad/s about a fixed verticalaxis through its center. Determine the final angular speed of the system
A certain capacitor in a circuit has a capacitive reactance of 30.89 ohms when the frequency is 177 Hz. What capacitive reactance does the capacitor have
A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1050 A, What is the power loss due to resistance in the line
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