How much would it cost to provide 123.8 MJ of heat with electricity if the cost of electricity is $0.119/kWh [round your final answer to two decimal places]?
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 heat energy a heater needs to provide to heat up air in a 2,829-cubic feet room from 52…
A: Given data: Volume of air (V) = 2829 ft3 Initial temperature (T0) = 52°F Final temperature (T) =…
Q: At 6:00 pm, it took you 14.14 seconds to heat an 800.0g pan initially at zero to 25.0∘C on the…
A: energy supplied by stove in 14.14 seconds = 628X14.14=9979.92 Joules . Then…
Q: A hot water heater in a residential home runs for an average of 3.3 hours per day with a heat energy…
A: To calculate the annual cost of hot water for the given electric hot water heater, we need to…
Q: A 1 kg. block of copper is removed from a freezer where its temperature was maintained at -22 Co .…
A: Mass of copper block m=1 kg Initial temperature of the block T1=-220C Final temperature of the block…
Q: How much heat is needed to heat 5 kg of water from 20 degrees Celsius to water vapor at 100 degrees…
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Q: if your water heat has an efficiency of 95%, how much energy would it take to heat 45 kg of water…
A: The heat energy required to raise the temperature of the water is given by, Q=mcTf-Ti Here, m is the…
Q: A microwave oven has a power requirement of 1,248 W. A frozen dinner requires 5.0 min to heat on…
A: Given: The power required to microwave is 1248 W. The time required to heat the frozen dinner is 5.0…
Q: How much energy (in MJ) is needed to raise the temperature of 0.176 m3 of water from 18.7˚C to…
A: Given Data:- Volume of the water is V=0.176 m3. Initial temperature is ti=18.7°C. Final temperature…
Q: A water heater can generate 31,000 kJ/hkJ/h. The specific heat of water is 4186 J/kg⋅C∘J/kg⋅C∘. How…
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Q: Suppose a person eats 2000 Kcal per day. Using the facts that 1 Kcal is approximately 4.2 Kj (a…
A: Joule is unit of energy or work. And Watt is the unit of power, which is energy per unit time. So,…
Q: A 1 kg. block of copper is removed from a freezer where its temperature was maintained at -22 Co .…
A: Given Data The mass of the block is m = 1 kg. The initial temperature of the copper is Ti = -22°C.…
Q: the specific heat capacity of a material is 5 Joules/(gram °C), how much eat do you need to raise 1…
A: given m = 1 gram specific heat C = 5 joules/(gram o C) ΔΤ = 10 o C
Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 degrees C? The…
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Q: A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy…
A:
Q: During a workout, a person repeatedly lifts a 16-lb barbell through a distance of 1.1 ft. How many…
A: The quantity of repetitions needed to burn 150oC must be ascertained. We are aware that the barbell…
Q: A hot water heater in a residential home runs for an average of 3.1 hours per day with a heat energy…
A:
Q: A hot water heater in a residential home runs for an average of 2.5 hours per day with a heat energy…
A: Solution-Given thatAverage running hour of water heater per day (t)=2.5 hours=2.5×60×60 seconds=9000…
Q: An incandescent light bulb with a surface area of 0.0131 m2 and an emissivity of 0.95 has a surface…
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Q: A pot is filled with 9kg of water at 10 °C. Calculate how much heat energy would be needed to raise…
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Q: Some amount of heat energy is removed from a 9cm X 26cm X 46cm block of ice to cool from 0ºC to…
A: initial temperature = 0 C final temperature = -26 C volume = 9 * 26 * 46 cm3 = 10764 cm3a) mass =…
Q: During a workout, a person repeatedly lifts a 16-lb barbell through a distance of 1.1 ft. How many…
A: The quantity of repetitions needed to burn 150 C must be ascertained. We are aware that the barbell…
Q: A 1kg. block of ice is removed from a freezer where its temperature was maintained at -21 C. How…
A: Given: mass, m = 1 kg Initial Temperature, T1=-21 ℃ Final Temperature , T2 = -4.1 ℃ Specific heat…
Q: t volume (in m3) of natural gas would it take to generate 5.54 x 108 J of energy if the energy…
A: Given:- if the energy content of natural gas is 36.6 MJ/m3 = 3.66 x 107 J/m3 natural gas would it…
Q: How much energy is required to convert 3.5kg of ice at OC to water at 29C ? The latent heat of…
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Q: Suppose 1,856 J of energy are transferred to a block of mass 4.1 kg and specific heat 639 J/(kg-C°).…
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Q: How much land (in km2) would you need to cover with solar panels in order to generate all of our…
A: Solar radiance is a term used for solar power (in W) received per unit area (in m2) by solar panel…
Q: A 2 kg. block of copper is removed from a freezer where its temperature was maintained at -12 Co .…
A: Given data: Mass (m) = 2 kg Initial temperature (Ti) = -12 °C Final temperature (Tf) = -5.9 °C…
Q: A hot water heater in a residential home runs for an average of 3.2 hours per day with a heat energy…
A: Given data: Average usage of water heater = 3.2 hours/day Power (P) = 3.8 kW Cost of electricity =…
Q: A microwave oven has a power requirement of 1,243 W. A frozen dinner requires 6.5 min to heat on…
A:
Q: What is the cost of operating a 63-Watt freezer for a month if the cost of electricity is $ 0.02 per…
A:
Q: A 2 kg. block of copper is removed from a freezer where its temperature was maintained at -12 Co .…
A: Mass of copper, m=2kg Initial temperature, T1=-120C Final temperature, T2=-5.90C Specific heat…
Q: A hot water heater in a residential home runs for an average of 3.2 hours per day with a heat energy…
A: Given Data:- The number of hours per day that the heater runs: 3.2 h/day=3.2×3600 s/dayThe energy…
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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- In an air conditioner, 12.65 MJ of heat transfer occurs from a cold environment in 1.00 h. (a) What mass of ice melting would involve the same heat transfer? (b) How many hours of operation would be equivalent to melting 900 kg ofice? (c) If ice costs 20 cents per kg, do you think the air conditioner could be operated more cheaply than by simply using ice? Describe in detail how you evaluate the relative costs.A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy input of 3.7 kW. What would be the annual cost for hot water in this home using a gas hot water heater if the cost of natural gas is $0.33/m3? The gas water heater can get 23 MJ of energy from 1 m3 of natural gas. [round your final answer to zero decimal places]?Air at 21°C is blown over a hot pipe with a surface area of 3.61 m2 to dissipate 922 W of heat energy. What is the minimum convection heat transfer coefficient that will ensure that the temperature of the pipe surface is less than 45°C [round your final answer to two decimal places]?
- A 2 kg. block of ice is removed from a freezer where its temperature was maintained at -23 Co . How much heat does the ice absorb as it is warmed to -3.5 Co ? (The specific heat capacity of ice is 2000) Calculate answer to one decimal.How much would it cost to provide 105.3 MJ of heat with electricity if the cost of electricity is $0.148/kWh [round your final answer to two decimal places]?How much heat Q would be needed to completely evaporate 37.5 g of boiling water at a temperature of 100 °C? Express the answer in units of joules. The latent heat of vaporization for water at 100 °C is 2260 J/g. Q =
- To heat a room with dimensions width a=3 m, length b=5 m, height h=2,2 m, approximately an electrical power of P=10 W per square meter is needed. At a cost of 0.2 soles per kW.h, how much will it cost per day to use this heater?What is the cost of operating a 84.87-Watt freezer for a month if the cost of electricity is $ 0.04 per kWh? Assume we take a month as 30 days.Answer the following. (a) How much energy is necessary to heat 2.0 kg of water from room temperature (20°C) to its boiling point? (Assume no energy loss.)kcal(b) If electrical energy were used, how much would this cost at 15¢ per kWh?
- What is the cost of operating a 76.59-Watt freezer for a month if the cost of electricity is $ 0.03 per kWh? Assume we take a month as 30 days.Calculate final temperature of 30 g of water heated with 2,780 J. The heat capacity of water is 4190 J/kg / C ◦ The initial temperature of water is 0 C ◦ Calculate to one decimal.A 2 kg. block of copper is removed from a freezer where its temperature was maintained at -13 Co . How much heat does the copper absorb as it is warmed to -5.2 Co ? (The specific heat capacity of copper is 390) Calculate answer to one decimal.