Estimate the rate at which energy flows from a gasoline pump to a motor vehicle during  a “ fill-up. ” Express your answer in kW. If this rate of energy delivery were electric power,  roughly how many people would it serve, assuming a typical US residential community?  Make the following assumptions: the HHV of 1 gallon of gasoline is 145,000 Btu; it takes  5 minutes to fill up a 16-gallon auto tank; and a 1 GW e electrical plant serves a residential  community of 1 million people.

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: The cost of electricity in Saskatoon is currently about 16.35 cents/kWh (including carbon tax). At…

A: Given data: Cost of electricity = 16.35 cents/kWh Power (P) = 80.0 W Time (t) = 2 weeks

Q: A typical candy bar contains approximately 250kcal. How long would this power a 60 W lightbulb?

A: Convert kilo calorie to joule. E=250 kcal4184 J1 kcal=1.046×106 J The relation between power and…

Q: Problem 2 - Suppose that the incandescent light bulb is used for lighting whose efficiency is 0.034.…

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Q: A typical cost for electric power is $ 0.135 per kilowatt-hour. (a) Some people leave their porch…

A: Solution

Q: Calculate the cost of leaving 1300 W refrigerator for a year, if the electric company charges you 12…

A: Write the formula for the total amount of power used in a year. Ptotal=watts×hours used per day×days…

Q: An energy intensive appliance draws a power of 1200 Watts. Suppose it is left on for one whole day…

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Q: fluorescent bulb is typically 4 times more efficient than an incandescent bulb. For example, a…

A: Power saved = 60 -15 = 45 W   time =1 year = 365 × 24 × 60  × 60  = 31536000 sec

Q: 20-18 The BMW Hydrogen 7 consumes an average of 13.7 L/100 km of gasoline (when operating in the…

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Q: Energy c o s t s $ 0.053/kWAh. A toaster, rated at1.0 kWAh, is used for a total of 30 minutes per…

A: The kilowatt-hour (kWh) is the unit of energy equivalent to 1 kilowatt (kW) of power expended for 1…

Q: What is the total cost of using all of the following at 9¢ per kilowatt-hour? (i) A 1200-W toaster…

A: Given:- 9¢ per kilowatt-hour  Find;- (i) A 1200-W toaster for 30 min(ii) Six 50-W bulbs for 4 h(iii)…

Q: Here is an extract from our electricity bill. The coloured text has been added to highlight the…

A: Energy used from company = 294.3 kWh  Number of days = 92 days

Q: An air conditioner, 6400 watts, is used only 4 months out of a year. On a typical day it is used…

A: We first convert the wattage to kilowatts and then use hours operated everyday to find the number of…

Q: What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock…

A: Given data: Power, P=2.00 W Time taken, t=540 days

Q: ne 9-volt battery contains 19.7 thousand joules of energy.  A 4-pack of 9-volt batteries cost $10.31…

A: The energy in one battery E =19.7×103 J Total energy of 4 pack 9V battery is 4E The power is 1 Watt…

Q: The cost of electricity in Saskatoon is currently about 16.35 cents/kWh (including carbon tax). At…

A: Given Data Cost of electricity is given as 16.35 cemts/kWh Power of the porch light is Pl=80.0 W…

Q: According to the NEC Table 220.55, what would the demand load be for a range rated 16 kW? Select…

A: Introduction: Table 220.55 gives you the demand factors that can be applies to electric ranges or…

Q: A small wind turbine has 3 blades that are 1m radius each. Take the air density on a typical day to…

A: A turbine is a device that converts fluid rotational energy captured by a rotor system into useful…