Convert j to watt
[DOC File]Cal Poly Pomona
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60 watt lightbulbs can be supplied with electricity under conditions of (1), (2), and (3)? How much thermal energy in joules is made available by cooling 1 cubic meter of rock from 240°C to 100°C? The specific heat is 2.4 J/cm3⋅°C.
[DOC File]Welcome to MCTCteach
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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) Consider the following machines and circle the one that comes closest to your horsepower rating.
[DOC File]1) Calculate the kinetic energy in J of an electron moving at
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12) Calculate the value of ΔE in joules for a system that loses 50 J of heat and has 150 J of work performed on it by the surroundings. A) 50 . B) 100 . C) -100 . D) -200 . E) +200 . 13) The change in the internal energy of a system that absorbs 2,500 J of heat and that does 7,655 J of work on the surroundings is _____ J. A) 10,155 . B) 5,155 ...
[DOC File]Stair-Climbing Power Lab
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Work is expressed in newton-meters, or the simplification, joules (J). The rate which work is done is called power. Power equals work divided by time. 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.
[DOC File]SNC 1DI - Mr. Arthur's Science Page
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1 watt = 1 volt-ampere; 1 watt = 1 joule/second; 1 watt = 1 ampere2-ohm 1 watt = 1 volt2/ohm 1 MJ = 1 x106 W-s. Energy - (E) joules (J), watt-hour (W·h), kilowatt-hour (kW·h) *Remember, whenever you are using joules, you need time to be in seconds. Whenever you are using watt-hours you need time to be in hours. Example #2
[DOC File]Earth, Space & Environmental Science - Earth and ...
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1 W = 1 J/sec (1 watt = 1 joule per second) Therefore a 100 watt light bulb uses 100 J/s of electrical energy. If it is 20% efficient (typical for an average light bulb) then the bulb converts 20% of the electrical energy into light, and 80% is lost as waste heat.
[DOC File]Worksheet: Energy and Power
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1 W = 1 J/s (i.e., 1 Watt = 1 joule per second) Thus, a 100-watt light bulb uses 100 J/sec of electrical energy. If it is 20% efficient, then the light bulb converts 20% of the electrical energy into light (the purpose of a light bulb) and 80% of the energy is transformed into heat.
[DOC File]Name:
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Work is expressed in newton-meters, or joules (J). The rate at which work is done is called power. Power equals work divided by time. If work is in joules (J) and time is in seconds (s), power is expressed in joules/second (J/s). One J/s is the same as 1 watt (1W), a unit named after British scientist James Watt, inventor of the steam engine.
[DOC File]Thermodynamics of Coffee Makers - Keysight
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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!
[DOC File]APES Energy Problems - Quia
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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 hour. a.) Find the energy used in J and kWh. 4000 W = 4000 J/s
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