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Hello, I have a physics assignment and wanted to get help with the answers. Thank you in advance.
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- Arent you gonna convert 8000ft-lb to btu first?Convert 100 joules of energy units ergs using dimentional analysisIn 2001, the United States produced 51 percent of its electricity in the amount of 1.878 * 10 kWh from coalfired power plants. Taking the average thermal efficiency to be 34 percent, determine the amount of thermal energy rejected by the coal-fired power plants in the United States that year.
- Suppose a man does 34 kJ of work with an efficiency of 5.05 %. How much food energy, in kilocalories, will the man metabolize in the preocess?On a walk a person burns aboout 336 cal/h nif the walk were done at 4.1 mi/h how many hours would it take to burn off 1 lb of body fat? (a pound of body fat storese an amount of chemical energy equivalent to 3,500 Cal)Complete solutions. Need asap
- What is an approach thats being investigated to mitigate the thermalization losses in photovoltaics?Burning a gallon ofgasoline releases 1.19 * 108J of internal energy. If a certain carrequires 5.20 * 105J of work to drive one mile, (a) how muchheat is given off to the atmosphere each mile, assuming the cargets 25.0 miles to the gallon?Metabolizing 1.0 kg of 3.7 x 107J fat results in about ofinternal energy in the body. (a) In one day, how much fatdoes the body burn to maintain the body temperature of aperson staying in bed and metabolizing at an average rateof 95 W? (b) How long would it take to burn 1.0 kg of fatthis way assuming there is no food intake?
- Calculate the pressure of 12.0 grams of O2 gas with a volume of 775mls at a temperature of 35.0oCThe berthelot equation of state is defined by the expression (p + n ^ 2a / v ^ 2t). (V-nb) = nRT (a and b constant). Expand the Berthelot equation with viruses and find the second virulence coefficient in terms of a and b.A typical incandescent reading lamp runs at 60W. If it is left on constantly, a) how much energy (in MJ) is consumed per day, and b) what is the weekly cost (in $) if energy is charged at a rate of 12.5 cents per kilowatthour? Write your answer in two (2) decimal places