a) What is the cost (in $) of heating a hot tub containing 1470 kg of water from 10.0°C to 40.0°C, assuming 75.0% efficiency to account for heat transfer to the surroundings? The cost of electricity is 9.00 cents/(kW · h).b) What current (in A) was used by the 220 V AC electric heater, if this took 4.05 h?
Answers: 1
Other questions on the subject: Physics
Physics, 21.06.2019 21:00, coalmax1212
State the right hand rule of the direction of magnetic field in a conductor carrying current
Answers: 1
Physics, 22.06.2019 12:30, clmorcutt420
Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.
Answers: 1
Physics, 22.06.2019 17:00, Gabriel134
Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?
Answers: 2
Do you know the correct answer?
a) What is the cost (in $) of heating a hot tub containing 1470 kg of water from 10.0°C to 40.0°C, a...
Questions in other subjects:
History, 28.10.2020 22:00
Mathematics, 28.10.2020 22:00
Mathematics, 28.10.2020 22:00
Mathematics, 28.10.2020 22:00
