100 Liters of H2O is to be heated from 20°C to 100°C. How many kWh of electric energy is needed? (Neglect heater losses
Q: A small vegetable shop use the following electric appliances: (1) Two Air Conditioner of rating 2200…
A: Energy is the ability to perform work. Energy can neither be created nor destroyed, and it can only…
Q: A Carnot air conditioner takes energy from the thermal energy of a room at 59°F and transfers it as…
A: Consider the temperature (in Kelvin) of the room be Tc, and the temperature (in Kelvin) of the…
Q: Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical…
A:
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
Q: 1.An electric kettle transfers 900 000 J of energy to some water in 10 minutes. (a) Estimate the…
A:
Q: all electric immersion heater is used to heat 85 g of water for a cup of instant coffee. The heater…
A:
Q: Calculate the time taken 60 w bulb to consume 3000 J of energy
A: Introduction : In this question we are provided with value of power and energy consumed . With…
Q: On clear day, sunlight delivers approximately 1000 J each second to a 1 m2 surface; smaller areas…
A:
Q: An automobile engine operates with an overall efficiency of 12%. How much energy in gallons of…
A: The formula for the efficiency of the automobile engine is:
Q: How much energy is required to heat 50 gallons of water from 20C to 130F? Note the unit change.…
A: The required expression for the energy is,
Q: Define the typical efficiencies of conventional and high-efficiency electric and natural gas water…
A:
Q: (a) How much energy is necessary to heat 2.5 kg of water from room temperature (20°C) to its boiling…
A: Energy is always transferred from the higher temperature state to the lower temperature state. In…
Q: A small electric immersion heater is used to heat 83 g of water for a cup of instant coffee. The…
A:
Q: A heat engine has a solar collector receiving 600 Btu/h per square foot, inside which a transfer…
A: Transfer medium is heated to 800R and collected energy power heat is 100F engine deliver heat 8500.…
Q: I need help finding how many types of energy radiant treatment for cancer has and what they are
A: Energy can be defined as the ability to do work. The energy stored in a battery is able to turn on…
Q: 3. A typical tablet battery recharger provides 10 Watts of power. 60% of this power is converted to…
A: Power of recharger (P) = 10 Watt Percentage of power , which get converted to chemical potential…
Q: For the process shown in the figure below, answer questions 7, 8, and 9 when the system consist of…
A:
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: Heater A transfers 500 kJ of heat in 30 s while heater B transfers 0.8 MJ of heat in 0.75 min. Which…
A: The given data are: Q1=500 kJ=500×103 Jt1=30 sQ2=0.8 MJ=0.8×106 Jt2=0.75 min=45 s
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: When an electric company can’t meet its customers’ demand for electricity on a hot summer day,…
A:
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: A weight lifter bench‑presses a 150.0 kg barbell from his chest to a height equal the length of his…
A: Solution: Given Values, Mass of barbell (m)=150 KgHeight (h)=0.850 m
Q: An electric kettle of 2200 W is used for 1 min. How much electrical energy is used
A:
Q: A refrigerator's freezer compartment is set at -10°C; the kitchen is 24°C. What is the theoretical…
A: Given:Temperature of teh kitchen is 24°C.Temperature of campartment is -10°C.Energy present in…
Q: certain location , the solar power per unit area reaching Earth’s surface is 200 W/m square ,…
A: GivenSolar power per unit area reaching Earth’s surfaceP=200 W/m2Average power requirement in your…
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 87 g of water for a cup of instant coffee. The…
A: Mass of water m = 87g Power P = 190 W Initial temperature Ti = 22 ° C Final temperature Tf = 100…
Q: electric hot plate raises its own internal energy and the internal energy of a cup of water by 15000…
A: given Q = -2900 J ΔU = 15000 J
Q: For a furnace to provide 50,000 Btu/hr of thermal energy to a living space, what should the rate of…
A:
Q: 1. Rick spends four hours researching on the internet and does 1090 J of work. In the process, his…
A: Given data The work done by rick is given as W = 1090 J. The decrease in internal energy is given…
Q: A power plant burns coal and generates an average of 615.0 MW of electrical power while discharging…
A: Given Information:- Electrical power generated by the plant is E=615.0 MW Waste heat H=1020.90 MW…
Q: Solar panels are rated by their theoretical maximum output capacity. A 2-kW PV panel would…
A: There are 10 PV panels each with capacity 260W.Therefore the total power would be
Q: 250 students sit in an auditorium listening to a physics lecture. Because they are thinking hard,…
A:
Q: An electric kettle was marked 500 Watt, 230 volt and was found to bring one kg of water at 15 degree…
A:
Q: In order to keep a basement from flooding, it is necessary to pump 285 kg of water each minute from…
A:
Q: An electric kettle was marked 500 Watt, 230 volt and was found to bring one kg of water at 15 degree…
A:
Q: A 3kW immersion heater is used to raise a 500g container of water from 20 degrees Celsius to 30…
A:
Q: Daniel has chores to do around the house. In which of his chores does he use thermal energy? a cook…
A: Thermal energy is generated when there is a rise in the temperature of the system. This energy is…
Q: Calculate consume 3456 J of energy. the time taken 72 w bulb to
A: Introduction : In this question we are provided with value of power and energy. with these data we…
Q: Your home electricity bill for this 30-day month is $84. The rate is 15 cents per kilowatt-hour. How…
A: Solution: Given that Electricity bill for month (30 days) = $84 rate is 15 cents per kilowatt-hour
Q: A previous part of the question says that the total electrical energy the battery can produce is…
A: The energy content of 1 gallon of gas =1.32×10^8 Joules. So the energy content of 12 gallons of…
Q: A new electric power plant has an efficiency of 37%. For every 100 barrels of oil needed to run the…
A:
100 Liters of H2O is to be heated from 20°C to 100°C. How many kWh of electric energy is needed? (Neglect heater losses
Step by step
Solved in 2 steps with 2 images
