Q: A hot water heater in a residential home runs for an average of 2.5 hours per day with a heat energy…
A: This question is based on electrical energy consumed in home or domestic connection.
Q: How much work must be done by frictional forces in slowing a 1,599-kg car from 14.7 m/s to rest?…
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Q: A hammer of a pile driver has a mass of 500 kg and must be lifted a vertical distance of 2 meters in…
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Q: If 10 lbs of water evaporated at atmospheric pressure until a volume of 188.5 ft3 is occupied, how…
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Q: In 2017, solar panels on your author’s home generated 3849 kilowatt-hours (kWh) of electrical…
A: Energy generated by solar panels on author's home = 3849 kWh Energy consumed by the house at the…
Q: Assume a laptop uses 50 watts per hour if the laptop is used for 8 hours a day how many kilowats or…
A: A regular laptop uses about 50 watts of power per hour. When used for 8 hours a day, the total power…
Q: A bowling ball has a mass of 10kg and is at a height of 5 meters What is its GPE and KE at the top
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Q: At room temperature, an oxygen molecule, with a mass of 5.31x10^-26 kg typically has kenetic energy…
A: The expression for the kinetic energy of molecule is, KE=12mv2 (I) m=mass of…
Q: Calculate the number of kilowatt-hours (kW-hrs) consumed in two days by a 260-Watt incandescent…
A: Given data The power of the bulb is given as P = 260 W. The time interval is given as t = 7 hrs.…
Q: when electrical appliances whose power usage is x watts is run Y seconds , it uses XXY joules of…
A: The energy unit used by electrical utilities in their monthly bills is the kilowatt-hour.
Q: How many calories does an electric heater of 100 watts generate per second?
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Q: Assuming that there are 5 × 1013 cells in the humanbody and that ATP is turning over at a rate of…
A: The watts consumed by human body can be given by Watts consumed=ATP molecules turnover/sec×number of…
Q: What is the GPE of chandelier that has a mass of 9.5kg and is 3m high
A: Given data Mass is m= 9.5 kg Height is h= 3 m The formula for gravitational potential energy or…
Q: A 56 grar
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Q: Calculate the energy used per day (kWh) of a car with an efficiency of 14 kilometers per liter and…
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Q: How many joules of energy is transferred by 3kw?
A: Given: The power is P=3 kW. The expression for energy (E) in joules is: E=P
Q: You decide to take your car on a drive through Canada, where gas is sold in liters and distance is…
A: The given values are, η=36.0 mi/gal=36.0 mi/gal1.609 km1 mi=57.924 km/gald=180 km
Q: Suppose a man does 34 kJ of work with an efficiency of 5.05 %. How much food energy, in…
A: Write the given values with the suitable variables. W=34 kJη=5.05%=0.0505Here, W is the work done…
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.
Q: B A Y A B' D' C' CONSUMER GOODS
A: The point Y in the graph represens in sufficient use of the resources.
Q: e, which is the unit of:
A: Given: The unit is given below:
Q: How much power does a high-end gaming machine need to remain operational?
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Q: What volume (in m3) of natural gas would it take to generate 4.18 x 108 J of energy if the energy…
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Q: the hydrualic life of an automobile repair shop has a surfave area 40 times that of the psiton at…
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Q: 5 tons beam is raised 6 meters
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Q: In 3-phase power measurement using two wattmeter method , if one wattmeter reads 3 times the other,…
A: We know that power factor can be given as shown below.
Q: A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy…
A: Given : Average running time of hot water heater = 2.2 hrs. per day = 2.2 * 60 * 60 = 7920 s Heat…
Q: Sarah drove her car a distance of 691.9 km, and used 41.7 L of gasoline (petrol). What is her fuel…
A: Answer 39.2 miles per gallon Solution
Q: A jet flights with a speed of 282 m/s. If the jet’s engine has a power of 1,829,680 W, what is the…
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Q: Calculate the number of kilowatt-hours (kW-hrs) generated in three weeks by a 1900-Watt propane…
A: The kilowatt hours (kW-hrs) is the unit of energy equal to one kilowatt of power sustained for time…
Q: Kleiber's Law states that for the vast majority of animals, the metabolic rate M is a power function…
A: Metabolic rate = M Weight = W M is the power function of Weight.
Q: The world record for ethanol fuel efficiency is 10705 miles per gallon [mi / gal] If the vehicle is…
A: Given: Efficiency of ethanol fuel is = 10705mi/gal =(10705×0.425)km/l = 4549km/l…
Q: If mass of air in a house is 278.6376kg. And the specific heat of air is 1.0kj/kgK. How much heat…
A: Given data: Mass (m) = 278.6376 kg Specific heat (c) = 1.0 kJ/kg.K Temperature difference (ΔT) = 10…
Q: A microwave oven has a power requirement of 1,244W. A frozen dinner requires 5.8 minute to heat on…
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Q: ___________ is the capacity for doing work.
A: Introduction: The work done is defined as the product of force and displacement of the object in the…
Q: A homeowner is told that she must increase the height of her fences 39.0% if she wants to keep the…
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Q: You rent a car in Germany with a gas mileage rating of 12.8 km/ L. What is its rating in miles per…
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Q: What is the GPE difference of the object dropped at two different distances with mass of 0.065…
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Q: A person eats an 408.85 J snack before working out. If a person uses all of their eaten energy to…
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Q: What is the co5st of lighting a 500 watt light for 8 hours, if electricity cost 7.5 cents per…
A: Given;- Power= 500 watt time = 8 hr. cost=7.5 cents per KW-hr
Q: What is the cost of operating a 84.92-Watt freezer for a month if the cost of electricity is $ 0.03…
A:
Q: Please just make up grams for tennis ball and notebook/ipad/Cell Phone and then convert it to Kg as…
A: Mass of tennis ball is approximately 60 gm = 60/1000 kg = 0.060 kg
Q: SA person tries a new diet where they eat onlLy eggs as their protein source. .They lost 1.7 ke in a…
A: Given Weight lost in one week = 1.7 kg Average rate of weight loss R = 1.7 kg / week 1 kg = 1000 g 1…
A certain hybrid vehicle has a fuel economy of 53mi/gal during city driving. What is this fuel economy in unitx km/L?
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- What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is 0.0900 per kWh ?A coal power plant has a rated output of 150 MW and a first law efficiency of 41%. Coal has an energy density of 24 MJ/kg. How many metric tons of coal are wasted by the power plant per hour while running at full capacity (that is, how much of the coal that was burned did not actually contribute to generating electricity)? Express your answer in metric tons of coal.A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ (kiloJoules)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- If you expended 1500 watts for 3 hours, how many kilowatt-hours (kWh) would that be? Enter answer as number followed by a space and then the correct units (i.e "123 Unit").How much efficiency would a solar panel of surface area A = 2 m² need to have to generate 1.7 kWh of electricity in a region where the solar power density is 4.5 kWh/m2/day? Write the efficiency in decimal value rounded off to 2 decimal places, not as a percentage. For instance you would write 0.25 and not 25%.A drive-through restaurant can serve 20 cars per hour. The effective capacity and efficiency of this drive-through is known to be 15 and 0.9 respectively. What is the minimum number of drive-through needed to achieve an anticipated servicing of 500 cars per 9-hour a day?
- The electrical power output of a large nuclear reactor facility is 900 MW. It has a 35.0% efficiency in converting nuclear power to electrical. What is the thermal nuclear power output in megawatts?The total consumption of electrical energy in the United States is about 1.0 1019 joules per year. What is the average rate of electrical energy consumption in watts? If the population of the United States is 300 million, what is the average rate of electrical energy consumption per person? The sun transfers energy to the earth by radiation at a rate of approximately 1.0 kW per square meter of surface. If this energy could be collected and converted to electrical energy with 40 % efficiency, how great an area (in square kilometers) would be required to collect the electrical energy used by the United States?In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can convert this power into electricity with 16% efficiency. If a typical home uses 390 kW⋅h of electricity per month, how many square meters of solar cells would be required to meet its energy requirements? Assume that electricity can be generated from the sunlight for 8 h/day .
- A 70-kg physicist is running up the stairs of the physics building and makes it up 48 m vertically in 1 minute. (a) what is the physicist's power output while running up the stairs? (b) if the physicist's work efficiency is just 3%, at what rate were they using metabolic energy? (c) if the physicist's metabolism can provide 5.6x10^6 J of energy before they need a rest, how long could they continue running up the stairs?Water flows over a waterfall that is 20.0 m high at the rate of 4.0 x 104 kg/s. If this water powers an electric generator with a 40.0% efficiency, how many watts of electric power can be supplied? Give you answer in MW (1 megawatt = 1x10' W). 3,136,000Science laboratories and research facilities must use high efficiency computers that calculate and solve complex problems for them. One supercomputer uses 49,690 J of total input energy to get 25,476 J of useful output energy for calculations. How efficient is this supercomputer? 19.50% 51.27% 51.26% O 1.950%