Problem 6: Your temperature is 98 °F and your environment's 32 °F and you are wearing poorly insulated clothes. Assuming you are a blackbody (i.e. an ideal absorber and an ideal emitter), then you lose energy via radiation with a power of, (assume for simplicity that your radiating area is 2.0 m² and take your emissivity e to be 1). a) 2.1×10² W b) 4.1x10² W c) 6.3x10² W d) 1.04×10³ W

There are approximately 106 million TVs in the United States. Each uses, on average, 77 W of power and is turned on for 5.6 hours a day. If electrical energy costs 0.072 dollars per kWh, how much money is spent every day in keeping the TVs turned on? Number i eTextbook and Media Units

Using the diagram above: my Circuit is powered by 4 AA batteries each in series that are 1.5 V. The capacitor is C=50 mF when the switch makes contact on the left that is charged through the resistor that is. R1=10 ohm Switch in contact on the right, the capacitor discharges through the flashbulb with a A resistance of 1m2 that produces light. 1. How much energy would the capacitor store when the capacitor is fully charged.?( Please give answer in joules 2 significant digits.) 2. If we started with 0% of energy; and If the switch were to be then on the left how long would it take for the capacitor to reach the maximum energy of 90%? (please give answer in seconds by 2 sig figs)

Define turbine efficiency, generator efficiency, and combined turbine–generator efficiency.