What is the total cost (including the price of the bulbs) to run incandescent buibs for 3.0 years? constants compact fluorescent buibs are much more efficient at producing light than are ordinary incandescent bulbs. they initially cost much more, but last far longer and use much less electricity. according to one study of these bulbs, a compact bulb that produces as much light as a 100 w incandescent bulb uses only 23.0 w of power. the compact bulb lasts 1.00x10 hours, on the average, and costs $ 11.0 whereas the incandescent bulb costs only 76.0 g, but lasts just 750 hours. the study assumed that electricity cost 8.00 ¢ per kwh and that the buibs were on for 4.0 h per day. vπ ασφ 31 ? 805.92 dollars) submit previous answers request answen xincorrect; try again; 5 attempts remaining part b what is the total cost (including the price of the bulbs) to run compact fluorescent bubs for 3.0 years? aedb 7 dollar(s)

Na food processing facility, a spherical container of inner radius r1 5 40 cm, outer radius r2 5 41 cm, and ther- mal conductivity k 5 1.5 w/m · k is used to store hot water and to keep it at 100°c at all times. to accomplish this, the outer surface of the container is wrapped with a 800-w electric strip heater and then insulated. the temperature of the inner surface of the container is observed to be nearly 120°c at all times. as- suming 10 percent of the heat generated in the heater is lost through the insulation, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the container, (b) obtain a relation for the variation of temperature in the container material by solving the differential equation, and (c) evaluate the outer surface tempera- ture of the container. also determine how much water at 100°c this tank can supply steadily if the cold water enters at 20°c.

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat