Electrical energy is usually measured in kilowatts*hours, kWh. A watt is 1 joule per second. A kilowatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh=3.6x10^6 joules. How many kWh are there in a meal that is 339 cal?

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Q: How much energy is used to light a 45 Watt light bulb for 10 hours?

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A: Given  4 m2

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A: The given values are, η=36.0 mi/gal=36.0 mi/gal1.609 km1 mi=57.924 km/gald=180 km

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Q: A kilocalorie is equal to one of the following. Is it equal to: a. 1000 Joules b. 4.2 Joules O c.…

A: Kilocalorie and Joule are the units of energy.

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A: Note :- We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

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Q: A person consumes about 2300 Cal a day. 1 Cal = 4186 J and 1 kWh= 860 Cal.If a power company charges…

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Q: How many liters of wine can be held in a wine barrel whose capacity is 31 gallons?

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A: Answer            39.2 miles per gallon Solution

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Q: Suppose you use 57 kWh (kilowatt hours) of electricity at $0.35 per kWH, 91 kWh at $0.26 per kWh,…

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Q: Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin…

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Q: A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of 1500…

A: As we know Q=mc∆T=heat gained by m kg of specific heat capacity c to increase temperature by ∆T

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Q: A certain European automobile has a gas mileage of 12 km/L,  What is the gas mileage in miles per…

A: We know, 1 km = 0.6214 milies (mi) 1 L = 0.2642 gallon (gal)