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In a reversible process called isothermal expansion, 457 J of heat are transferred into a quantity of gas in an engine from the hot reservoir, while 352 J of heat are transferred out to the cold reservoir. The temperature of the gas is 473 K at the beginning and end of the process. What is the change in entropy of the gas?
the eye of a hurricane passes over grand bahama island in a direction 60.0deg north of west with a speed of 38.0 kmh.
Given that the latent heat of water/steam is approximately 41,000 J/mol, at what pressure will water boil at 50 degress Celcius? hint: remember that at 1 atm water boils at 373 K. Also, assume that the latent heat is constant and that the volume of t..
three point objects with net charge of q1 78 microc q2 47 microc and q3 -80 microc respectively are placed along a
So you have two different systems both equal contained in a case with the same volume and area. Both cases are in two separate rooms of the same area and volume. Which room is has a higher peak temperature
A rocket of mass 4.5105 kg is in flight. Its thrust is directed at anangle of 50.5° above the horizontaland has a magnitude of 6.30 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above thehorizo..
A solid sphere has a temperature of 768 K. The sphere is melteddown and recast into a cube that has the same emissivity and emitsthe same radiant power as the sphere. What is the cube'stemperature in kelvins?
Three resistors having resistances of R1 = 1.74? , R2 = 2.57? and R3 = 4.83? respectively, Find the voltage across each resistor
A disk of radius 25 cm lies in a vertical plane and rotates with a constant angular acceleration of 5.00 rad/sec^2. What is the corresponding tangential speed
a 30kg child wants to use a 20kg board that is 6.0m long as a seesaw. since all her friends are busy, How far from her will the support be
A portion of Nichrome wire of radius 3.95 mm is to be used in winding a heating coil. If the coil must draw a current of 9.70 A when a voltage of 120 V is applied across its ends, find the following. (Take the resistivity of nichrome to be 1.50 10..
a rigid tank of volume 0.5 m3 is initially evacuated. a hole develops in the wall and the air from the surroundings at
a pickup truck has a width of 78.6 in. if it is traveling north at 34 ms through a magnetic field with vertical
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