Physics, 27.06.2021 03:20 Jasminehenry123
The quantity of heat Q that changes the temperature ΔT of a mass m of a substance is given by Q=mcΔT, where c is the specific heat capacity of the substance. For example, for H2O, c=1cal/g∘C. And for a change of phase the quantity of heat Q that changes the phase of a mass m is Q=mL, where L is the heat of fusion or heat of vaporization of the substance. For example, for H2O the heat of fusion is 80 cal/g or 80 kcal/kg, and the heat of vaporization is 540 cal/g or 540 kcal/kg. Use these relationships to determine the number of calories to change (a) 1 kg of 0°C ice to 1 kg 0°C ice water; (b) 1 kg of 0°C ice water to 1 kg 100°C boiling water; (c) 1 kg of 100°C boiling water to 1 kg 100°C steam; and (d) 1 kg of 0°C ice to 1 kg 100°C steam.
Answers: 2
Physics, 21.06.2019 23:30, EstevanOtero7361
Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work
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Physics, 22.06.2019 15:00, banna01man
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Physics, 22.06.2019 17:20, elkinsmarie88oyzd23
Select all the correct answers. which two statements are true? a moving magnetic field creates an electric field. a constant magnetic field creates an electric field. a constant electric field creates a magnetic field. a moving electric field creates a magnetic field. resetnext
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The quantity of heat Q that changes the temperature ΔT of a mass m of a substance is given by Q=mcΔT...
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