How much energy is dissipated as thermal energy due to friction and other inefficiencies in the system when you have 5 kWh of electricity running for 45 minutes, as well as 200 kJ of mechanical work being produced.
How much energy is dissipated as thermal energy due to friction and other inefficiencies in the...
3 pts A table saw-powered by an electric motor-was measured to consume 0.2 kilowatt hours (kWh) of electricity after running for 5 minutes. In this same period of time, it produced 600 kJ of mechanical work. a) What is the average electrical power consumed by the motor? Hint: What are the dimensions of energ b) What is the average mechanical power produced by the motor? c) How much energy is dissipated as thermal energy (i.e. heat) due to friction and...
How much energy in kWh would a heater rated at 9 kW use when run for 300 minutes? If the cost of electricity is 1.2 $/kWh, how much does it cost to run the heating system for 300 minutes.
How much energy in kWh would a heater rated at 7 kW use when run for 9000 seconds? If the cost of electricity is 1.4 $/kWh, how much does it cost to run the heating system for 9000 seconds ?
How much energy in kWh would a heater rated at 7 kW use when run for 9000 seconds? If the cost of electricity is 1.4 $/kWh, how much does it cost to run the heating system for 9000 seconds?
A diatomic ideal gas expands from a volume of \(v_{A=100 m^{3}}\) to \(v_{B=300 m^{3}}\) along the path shown in the figure below. The initial pressure is \(_{P_{A}=200 x+10^{5} p_{2}}\) and there are \(73.4\) mol of gas.(a) Calculate the work done on the gas during this process.(b) Calculate the change in temperature of the gas.(c) Calculate the change in internal energy of the gas. (Take the molar specific heat of a diatomic gas for this process to be \(C_{p}=\frac{7}{2} R\)(d) How...
Name: . How much energy (work) is expended to move an object 30' with a force of 5 lbs? 2. How many feet can an object be moved with 50 ft. lb. of energy if it takes 2.5 Ibs of force? A 60w light bulb will use a specific amount of energy in 30 minutes. How many meters can you move a car with the same amount of energy if it takes 200 Newtons of force to move it? 4....
500 J of work are done on a system in a process that decreases the system's thermal energy by 200 J. How much heat energy is transfered to or from the system
300 J of energy are transferred to a system in the form of heat while the thermal energy increases by 150 J. How much work is done on or by the system?
2.3 How much energy will be dissipated when the switch in the circuit in Fig. 2P.1 is closed. ci R=5Ω Fig. 2P.I The capacitor C, in Fig. 2P.1 has an initial charge of 1.0C; C, is discharged. Calculate the following: a. The peak current The current 200 μs after the switch closes c. The ultimate energy stored in C2 d. The ultimate voltage on C
the last question Cooling Your Leftovers Due on Saturday, Dec 7 at 11 59 pm (EST) You place your lunch leftovers in the refrigerater Suppose the refrigerator needs te remove 1.0730+43 of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator. In the meantime, this means the refrigerator produces 1.3969E+4 3 of thermal energy that it expels inte the ktchen asa resut. What is the total work done by the compressor mator...