What is the useful energy output when a 60 W light bulb is on for 2 hours? Recall, traditional light bulbs are only 5% efficient.

In the figure below, ℰ1 = 5.00 V, ℰ2 = 4.00 V, R1 = 1.00 Ω, R2 = 3.00 Ω, R3 = 3.00 Ω, and both batteries are ideal. (part 2) (d) What is the power of battery 1? (Include the sign of the value in your answer. A negative sign indicates absorption of energy and a positive sign indicates an energy output.) __________________W(e) What is the power of battery 2? (Include the sign of the value in your answer. A negative sign indicates absorption of energy and a positive sign indicates an energy output.) ___________________W (please show the units when working through the problem so that I can follow it easier)

In recent years, practical hybrid cars have hit the road—cars in which the gasoline engine runs a generator that charges batteries that run an electric motor. These cars offer increased efficiency, but significantly greater efficiency could be provided by a purely electric car run by batteries that you charge by plugging into an electric outlet in your house.But there’s a practical problem with such vehicles: the time necessary to recharge the batteries. If you refuel your car with gas at the pump, you add 130 MJ of energy per gallon. If you add 20 gallons, you add a total of 2.6 GJ in about 5 minutes. That’s a lot of energy in a short time; the electric system of your house simply can’t provide power at this rate.There’s another snag as well. Suppose there were electric filling stations that could provide very high currents to recharge your electric car. Conventional batteries can’t recharge very quickly; it would still take longer for a recharge than to refill with gas.One possible…

The 10 resistor in (Figure 1) is dissipating 35 W of power. Figure ww -ww 10 (2 5.0 92 ww 20 (2 1 of 1 How much power is the 5.0 2 resistor dissipating? Express your answer with the appropriate units. Pso = Submit ▾ Part B μA P20 = Value Submit X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer How much power is the 20 S2 resistor dissipating? Express your answer with the appropriate units. Units HA Value [w] < Return to Assignment Units Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining Provide Feedback ?