3. How many Joules of energy are used by a 4 Watt bulb burning for 2...
4. A 12.0 watt LED bulb produces the same illumination as a 75.0 watt incandescent bulb. If energy costs S 0.123 per kWh, how much money would you save by using the LED bulb for 14.0 hours every day for 30 days instead of using the incandescent bulb?
One watt (W) is equal to 1 J/s. Assume that 5.0% of the energy output of a 75 watt light bulb is visible light and that the average wavelength of the light is 550 nm, how many photons per second are emitted by the light bulb? If 5.0% of the energy of a 75 watt light bulb is visible light, then the rate of energy of all the photons emitted is J/s (3 s.f.). A 550 nm wavelength is the...
11. How much energy does a 100-W light bulb use in 8.0 hours? (Note: 1kWh = 3.6x106 Jor 1kWx 1hour) O 800 kWh O 13 kWh O 0.008 kWh O 0.8 kWh
The energy unit used by electrical utilities in their monthly bills is the kilowatt how (kWh: 1 kilowatt used for 1 hour). Calculate how many joules there are in a kilowatt hour If electricity costs $0.09 per kilowatt hour, calculate how much it costs per megajoule. 1 kWh = _______________ J $ ____________
a 150 microfarad capacitor is used in a circuit. how much energy, in joules, stored in it when 119 V is applied (50%) Problem 2: A 150 μF capacitor is used in a circuit. us à How much energy, in joules, is stored in it when 119 V is applied? tus
Question 14 4 pts The gas tank of a certain vehicle holds 12.4 gallons. How many pounds of carbon dioxide are produced by burning an entire tank of gas? Round your answer to the nearest tenth of a pound. Do not include units with your answer. Question 15 4 pts How many pounds of carbon dioxide would you prevent from entering the atmosphere in one year, if you were to replace a 100-watt light bulb with a CFL bulb that...
4) a) What is the current in a 75 W the filament of a light bulb when you tum the light on? Electric sockets supply electricity at about 110 V b) How much charge does flow through the filament during 10.0 second? c) How many electrons pass during this time? d) What is the resistance of the filament? e) What is your monthly payment if you keep the light bulb on for 4 hours every day? The cost of each...
Name: How moch energy (work) is expended to move an object 30 with a force of 5 Ihe? eet can an object be moved with 50 ft. lb, of energy if it takes 2.5 lbs of force? How mary wwy icht bulb will use a specifie 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 Our Styhawks use 160 horsepower engines....
kWh BTU Question 10 5 pts A 300 W light bulb is turned on 3 hours every day. How much energy does it consume in one year in kwh? Question 1:1 5 pts The thermodynamic process performed by the condenser in a Carnot engine is Adiabatic compression
How many kWh of energy does a 543 W toaster use in the morning if it is in operation for a total of 8 min? (answer in kWh) At a cost of 12 cents/kWh, estimate how much would this add to your monthly electric energy bill if you made toast four mornings per week. (Assume a month of 4 weeks.) (answer in cents/month)