Physics, 26.03.2021 17:10, wowihavefun
You place a piece of bread in a toaster. A minute later, the toast pops up. What evidence tells you an increase in temperature caused a chemical change?
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Physics, 22.06.2019 16:50, lizzepacheco
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
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Physics, 23.06.2019 07:50, yedida
In a particular chemical reaction, the energy of the reactants is 30 kj and the energy of the products is 5 kj.
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You place a piece of bread in a toaster. A minute later, the toast pops up. What evidence tells you...
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