Which of the following takes place as an ice cube cools a drink? (a) a calorie of heat energy is transferred from the ice to the water of the drink.(b) the specific heat of the water in the drink decreases.(c) molecular collisions in the drink increase.(d) evaporation of the water in the drink increases.(e) kinetic energy in the drink decreases.
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Physics, 22.06.2019 06:10
Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70âc. calculate the work (in kj) done during this process.
Answers: 3
Physics, 22.06.2019 09:50
Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
Answers: 1
Physics, 23.06.2019 01:00
First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.
Answers: 2
Physics, 23.06.2019 02:20
Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula Ď ( x ) = 2.5 + 1.2 e â 0.7 x kg/m3. find the total mass of sawdust in the conical hole.
Answers: 1
Which of the following takes place as an ice cube cools a drink? (a) a calorie of heat energy is tr...
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