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(1). A 10.6-kg iron block at 203°C is quenched in an insulated 18.4-kg water bath initially at 18°C. After the iron and water reach thermal equilibrium with each other, what is the total change in entropy of the entire system (iron and water), in units ofkJ/K?
(2) Steam is compressed in an adiabatic, isentropic compressor at a mass flow rate of 14.9 lbm/s. Inlet conditions are 20 psia and 240°F, and the outlet pressure is 120 psia. Calculate the work power to this turbine in Btu/s.
a 1.91-kg solid sphere radius 0.130 m is released from rest at the top of a ramp and allowed to roll without
Consider an infinitely large non-conducting sheet in the xy-plane with uniform charge density σ. Write down theexpression that defines the electric field everywhere inspace.
A cart (821.7g) connected to a hanging mass (240g) is free to move on an incline plane with an angle of 15.3 degrees. Determine which way the hanging mass will move
there are four charges each with a magnitude of 1.88 microc. two are positive and two are negative. the charges are
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearing and is used as a turntable. What is the final angular momentum of the system
You want to take a full-length photo of your friend who is 1.94m tall, using a 35.0mm camera having a 50.0mm lens, How far is the lens from the film
At what rate is the flywheel spinning while the power comes back on. How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on.
Two points are given in polar coordinates by (r, 0)=(2.00m, 50.0°) and (r,0)= (5.00m, -50.0°), respectively. What is the distance between them
to be safe the engineers making the ride want to be sure the normal force does not exceed 1.9 times each persons weight
person leaning over a 124 m deep well accidentally drops a siren emitting sound of frequency 2430 hz. What beat frequency does this person perceive
The nucleus of radioactive polonium-210, with a mass of about 3.49?10?25kg , is known to decay by emitting an alpha particle with a mass of about 6.68?10?27kg. what is the recoil speed of the remaining nucleus
A small rock is thrown vertically upward with a speed of 12.0 from the edge of the roof of a 36.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected.
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