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Convert W to J/s | watt to joules per second
Watts. Assuming a 3 second time period, calculate the amount of energy: Energy = Power x Time. Energy from the sun = Joules. How does a solar cell work? Solar cells are part of a large category of devices that are commonly described as photovoltaic. The term photovoltaic refers to all semiconductors that convert light (photo) into electricity ...
4500 joules to watts

[DOC File]Thermodynamics of Coffee Makers - Keysight
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b.) How much energy does the bulb convert to light during 12 hours? 4.32 x 10 6 J x .2 = 864,000 J light. c.) Convert total energy use to kWh. 4.32 x 10 6 J ( 1kWh/ 3.6 x 10 6 J) = 1.2 kWh. 4. An electric clothes dryer has a power rating of 4000 W. Assume a family does 5 loads of laundry each week for 4 weeks. Assume each dryer load takes 1 ...
how many watts in a joule

[DOC File]www.mctcteach.org
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An old fashioned light bulb may convert electrical power into light and heat at a rate of 100 Watts (remember , that’s a rate of 100 Joules every sec). Your body converts about 2000 Calories of food energy into movement and heat every day—that’s about 50 W—just to keep yourself warm.
convert watt to joules second

[DOC File]Work, Power, and Energy
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$0.05 / 3.6e6J (7.2e15 Joules) = $100 million. Calculate the energy in joules made available when 1 kg of water falls 30 meters if 90% of the energy can be converted to a useful form. Calculate the energy in joules made available when 1 kg of water is cooled by 2°C if 3% of this energy can be converted to a …
joules vs watts

[DOC File]APES Energy Problems - Quia
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If work is in joules (J) and time is in seconds (s), power is expressed in joules/second, or the simplification watt (W). James Watt was a British scientist who invented the steam engine. To find out how the power of his engine compared to that of a horse, Watt …
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[DOC File]POWER
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Divide the heat produced when cranking by the time spent cranking in seconds. This value is the energy delivery rate you achieved while cranking the generator in units of Watts (J/sec). Convert the energy delivery rate of your arm in Watts into horsepower using the conversion factor: 1 watt = 0.00134102209 Horsepower (HP)
convert watts to joules calculator

[DOC File]Cal Poly Pomona
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If a refrigerator uses on average 500 kilowatt-hours of energy each year what is its average power rating measured in Watts (how many joules of energy does it uses each second)? (1kw*hr = 3.6x10. 6. J) An 82 kg hiker climbs Pike’s Pike in Colorado. During a 6 hour period, the hiker's vertical elevation increases by 2,255 meters. a.
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[DOCX File]Power Practice Worksheet.docx
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Find the amount of work (in Joules) each person has done by multiplying their weight (in Newtons) by the height ascended (in meters). Find the power (in Watts) using the formula: Power (W) = Work (J) / time (sec). Find the equivalent horsepower by dividing the power (in Watts) by 746 because 1 horsepower equals 746 Watts.
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[DOC File]Day 1 – Energy
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Convert Calories to calories. Convert calories to Joules. Determine your weight in Newtons. Determine how high you would need to climb (in meters) to use up the energy you consumed. Data and calculations: Snack. Calories Drink. Calories Total. Calories calories Joules Weight Meters you need to …
4500 joules to watts

[DOC File]Cabrillo College
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To estimate the total U.S. annual energy consumption, convert from Joules to kW-hr and estimate the total number of brewing/heating cycles performed per year. An educated guess at this value is 30,000,000,000 brewing/heating cycles per year, resulting in 4,000,000,000 kW-hr per year, with an energy cost of $400 million dollars per year!
how many watts in a joule

Convert watts to joules