A physics student likes to study while listening to loud music. If electricity costs 12.00$/kWh (kilowatt-hour), how much would it cost the student to run a 220 W stereo system 8.0 hours per day for 10 days of studying? (in dollars)

What is the peak power consumption of a 120-V AC microwave oven that draws 10.0 A?

Your family decides to limit TV watching to 17 hours every week. If the power rating on your TV is 394 W and electricity costs $0.14per kwh, then the cost for the week would be $ Do not include the dollar sign, and round your answer to the nearest cent.

A 100 kW solar array located in Cheney, WA is estimated to produce 126,000 kWh.  Assuming electricity produced from the solar is free ($0.00 / kWh), how much would the building save on annual electricity costs?

A power company charges $0.095 per KW•hr. There is a microwave rated at 1200 W, a TV rated at 60W, and a light bulb rated at 12W. If the microwave is used 5 min a day, the TV 4.5 hours a day, and the light bulb 6 hours a day, how much money is owed to the power company at the end of 30 days for the devices?

Detector A is 10 m from a light bulb. Detector A measures the power of the light bulb to be 100 W. Detector B is 20 m from the same bulb. What is the power of the light bulb according to detector B?

P1

Calculate the overall transmittance for the wall shown below, does this wall meet Bahrain's regulations 0.57 W/m².C 12 mm outside plaster, k 0.75 200 mm Hollow blocks, k 0.885 45 mm polystyrene, k 0.03 12 mm inside plaster, k 0.75 Surface resistance (Heat flow) Ru Rair Direction of Flow Wall m²KW 0.121 -0.059- Roof m²KW :0.166 :0:059 for cavity between 5-20mm 0.11-if cavity >20mm 0.18

A (4.41x10^1)-F capacitor is connected to an AC source of EMF with a frequency of (4.1x10^2) Hz and a maximum EMF of (2.450x10^1) V. What is the maximum current expressed in A and with two significant figures.

The average television is said to be on 6 hours per day. Estimate the yearly cost of electricity to operate 100 million TVs, assuming their power consumption averages 150 W and the cost of electricity averages 12.0 cents/kW ⋅ h .