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A 3.4 kg piece of aluminum at 28°C is placed in 1.0 kg of water in a Styrofoam container at room temperature (20°C). Estimate the net change in entropy of the system in cal/K
A 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds.
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.56 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separ..
What is diameter of the circle
What was the final temperature of the coins. What is the train's acceleration after its wheel begins to stick.
A cannonball is dropped from the top of a building. If the point of release is 44.8 m above the ground, what is the speed of the cannonball
A 76 W light bulb with a resistance of 178 ? is connected to a power supply with a 117 V, What is the internal resistance of the power supply
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
A horizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.5 rad/s about a fixed vertical axis through its center. What is the mass of the turntable
The potential at location A is 393 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 781 V, and when released from rest from this spot, the particle arrives at B wit..
A 270 m wide river flows due east at a uniform speed of 2.30 m/s. A boat with the speed of 8.4 m/s relative to water leaves the south bank pointed in a direction 38o west of north. What is (a) magnitude and (b) direction of the boat's velocity rel..
A certain freely falling object requires 1.10s to travel the last 32 m before it hits the ground. From what height above the ground did it fall.
Find a relation between the variables that would guarantee that the block is initially slowing down.
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