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A: Given, Total energy, E=1000 J, and heat, Q=50 Watts.
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A: Heat energy needed to raise the temperature can be expressed as Q=mcΔT
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A: Required: What is second law of thermodynamics? Answer : a measure of the disorder in a system.
Q: You observe a grasshopper eating a blade of grass. You know that each blade of grass contains 100…
A: Given that:- Energy contain in one blade of grass=100 units
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A: Heat of Combustion of coal = 28MJ/Kg Amount of coal burnt per hour (given) = 380 metric ton =…
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Q: *51. mmh A 0.35-kg coffee mug is made from a material that has a specific heat capacity of 920 J/(kg…
A: mm=Mass of mug=0.35 kgcm=Mug heat capacity=920 J/kg°Cmw=Mass of water=0.25 kgcw=Specific heat of…
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Q: A 15-g lead bullet is tested by firing it into a fixed block ofwood with a mass of 35 kg. The block…
A: Given data: Mass of lead bullet, m=15 g = 0.015 kg Mass of block, M=35 kg Temperature, T=0.020 oC…
Q: A small electric immersion heater is used to heat 62 g of water for a cup of instant coffee. The…
A: Given data: Mass (m) = 62 g = 0.062 kg Power (P) = 110 W Initial temperature (Ti) = 25 °C Final…
Q: Electrical power companies sell electrical energy by the kilowatt-hour, where 1kWh = 3.6x106 J.…
A: Heat given to water Q=mc∆T where m=76kg, c=4180 J/kgC, ∆T=43-15=28°C putting thse values we get…
Q: A small electric immersion heater is used to heat 87 g of water for a cup of instant coffee. The…
A: Given data: Mass (m) = 87 g = 0.087 kg Power (P) = 170 watts Initial temperature (Ti) = 18°C Final…
Q: A small electric immersion heater is used to heat 65 g of water for a cup of instant coffee. The…
A:
Q: A small electric immersion heater is used to heat 57 g of water for a cup of instant coffee. The…
A: mass , M = 57 g = 0.057 kg Power , P = 150 W Initial temperature , T1 = 23 °C Final temperature , T2…
Q: A small electric immersion heater is used to heat 84 g of water for a cup of instant coffee. The…
A: Given : mass, m = 84 g = 84 × 10-3 Kg Power, P = 81 W T1= 21 ℃ = 294 K T2=100 ℃ = 373 K Specific…
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Q: g of water is split into hydrogen and oxygen using electrolysis at 27oC. Calculate the w
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Q: A small electric immersion heater is used to heat 56 g of water for a cup of instant coffee. The…
A: Given, mass of water , m = 56 g = 0.056 kg change in temperature , ΔT = 100°C - 24°C = 76°C = 76 K…
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A: Power, P = 5 kW, time, t = 1 hour mass, m = 15 kg specific heat, c =4200J/kg C
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Q: A small electric immersion heater is used to heat 74 g of water for a cup of instant coffee. The…
A: Given that, Mass(m) = 74g Power(P) = 150 W Temperature rise from 22°C to 100°C Specific heat (s) =…
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Q: A small electric immersion heater is used to heat 100 g of water for a cup of instant coffee. The…
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Q: A small electric immersion heater is used to heat 98g of water for a cup of instant coffee. The…
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Q: A small electric immersion heater is used to heat 79 g of water for a cup of instant coffee. The…
A: Given: Mass of the water is m=79 g=79×10-3 kg The power is P=160 watt Initial temperature is TI=23°…
Q: A small electric immersion heater is used to heat 82 g of water for a cup of instant coffee. The…
A: Given data: Mass (m) = 82 g = 0.082 kg Power (P) = 150 W Initial temperature (T0) = 25°C Final…
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Q: A small electric immersion heater is used to heat 62 g of water for a cup of instant coffee. The…
A: Given data: Mass (m) = 62 g = 0.062 kg Power (P) = 150 W Initial temperature (Ti) = 22°C Final…
Q: A small electric immersion heater is used to heat 50 g of water for a cup of instant coffee. The…
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Q: A small electric immersion heater is used to heat 79 g of water for a cup of instant coffee. The…
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benchmark the thermal energy kBTroom in various energy units
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- At a certain location , the solar power per unit area reaching Earth’s surface is 200 W/m square , average over a 24 hours day. If the average power requirement in your home 4.0 KW you can covert solar power to electric power with 13% efficiency. How large a collector area will you need to meet all your household energy requirements from solar energy?The question also asks for a sketch of energy level diagram too. Can i pleasee get that?It is 5.0 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W). Which choice would burn up more energy, and how much energy (in joules) would it burn? Why is it that the more intense exercise actually burns up less energy than the less intense exercise?
- A conventional photovoltaic cell delivers 4.0*10^-3 W of electric engery when illuminated with 1.2*10^-1 W of light energy. 1. What is the efficiency of the cell? 2. Could a more efficient cell produce 0.12W of electric energy when illuminated with the same amount of light energy as in #1. Explain.An incandescent lightbulb is only about 5% efficient at converting electrical energy to radiant energy. Does this mean that the Conservation of Energy does not apply for this situation? Explain.In 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.
- Calculate the energy equivalent of 1 g of substance.An adult person radiates heat to the surroundings at about the same rate as a 100-watt electric incandescent light bulb. What is the total amount of energy in kcalkcal radiated to the surroundings by an adult over a 33 hh period?Explain the term thermal energy