Engineering, 02.02.2022 05:40 avahrider1
A cup of coffee is heated in a microwave oven. If heat (through radiation) is added at a constant rate of 200 W and the cup contains 0.3 kg of coffee.
a. Determine the rate of change of the specific internal energy of the coffee.
b. Assuming the density of coffee to be 1000 kg/m 3 and the specific internal energy in kJ/kg to be related to temperature through u=4.2T, where T is in Kelvin, determine how long does it take for the temperature of the coffee to increase by 20 o C.
Answers: 2
Another question on Engineering
Engineering, 03.07.2019 15:10
Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.
Answers: 1
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
Answers: 2
Engineering, 04.07.2019 18:10
Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.
Answers: 1
Engineering, 04.07.2019 18:20
Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.
Answers: 3
You know the right answer?
A cup of coffee is heated in a microwave oven. If heat (through radiation) is added at a constant ra...
Questions
Mathematics, 23.03.2020 23:09
English, 23.03.2020 23:09
English, 23.03.2020 23:09
English, 23.03.2020 23:10
Mathematics, 23.03.2020 23:10
Mathematics, 23.03.2020 23:10
History, 23.03.2020 23:10
Mathematics, 23.03.2020 23:10
