Physics, 29.08.2019 20:10, klongstreet1731
Acertain amount of water of heat capacity c is at a temperature of 0°c. it is placed in contact with a heat bath at 100° c and two come into thermal equilibrium 1. what is the entropy change of the universe? 2. the process is now divided into two stages: first the water is placed in contact with a heat bath at 50° c and comes into thermal equilibrium; then it is placed in contact with the heat bath at 100 c. what is the entropy change of the universe? 3. the process is divided into four stages with heat baths at 25, 50, 75, m and 100°c. what is the entropy change of the universe in this case? 4. if we were to continue this subdivision into an infinite number of heat baths what would be the entropy change of the universe?
Answers: 2
Physics, 21.06.2019 21:40, taylordalton93
This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?
Answers: 3
Physics, 23.06.2019 02:30, kbmom3830
Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.
Answers: 2
Physics, 23.06.2019 14:00, hannah2757
If 0.05j work is done by stirring a cup of tea, if 150ml of tea is stirred 50 times and temperature rises to 67c° what will be the increase in entropy? a)0.007j/k b)1.1j/k
Answers: 2
Acertain amount of water of heat capacity c is at a temperature of 0°c. it is placed in contact with...
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