49.) When you use electrical appliances you are using electrical energy based on the amount of the time electrical power is used. How much electrical energy is used by a small fridge that is rated at 350 watts when used for 8 hours? (E=Pt)

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: Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B…

A:

Q: (i) Electrical Energy(in kWh) consumed by Air conditioners of rating 2500 W for 10 h of each day=…

A: 1) Energy = power × time   = 4×2.5 kw × 10×30 h   = 3000 kwh

Q: 9) Akiko Thompson develops an average power of 300watts as she covers 200m in 40.0s in a river. What…

A: Given Power generated = 300 w Distance = 200m Time = 40s

Q: Suppose you have a clothes dryer that uses 4000 watts of power and you run it for an average of 1…

A: Given data: Power of clothes dryer, P=4000 W

Q: Electric energy units are often expressed in “kilowatt-hours." (a) Show that one kilowatt-hour (kWh)…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 1. A huge stone is pushed by a 46N of force. If there is only 12.5N of friction, and the stone's…

A: According to Bartleby policy I can only answer one question. So please post the other questions…

Q: The power consumed by a refrigerator is 450 W. This refrigerator works for a total of 6 hours every…

A: Given that power consumed by refrigerator and refrigerator work a total of 6 hours in one day and…

Q: The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value.…

A:

Q: A large household air conditioner may consume 13.0 kW of power. What is the cost (in $) of operating…

A:

Q: Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B…

A:

Q: A microwave oven has a power requirement of 1,255 W. A frozen dinner requires 4.2 min to heat on…

A: Given,

Q: 8. What are two ways that energy can be conserved?

A: Introduction: Energy is the quantitative property of the body which have the tendency to do work, it…

Q: A 60W light bulb is used 12 hours a day and is 30% efficient. How many kJ are used to power this…

A:

Q: How long would it take a 600 W electric motor to do 17,500 J of work

A: Given data: Power (P) = 600 W Work (W) = 17,500 J Required: Time (t)

Q: Suppose you leave a 50 W bulb on for a month. Approximately how much energy does it use?

A: Given data :  Power of bulb = 50 W  Time taken by bulb = 1 month  1 month = 30 days  1 day = 24…

Q: The “Energy Guide” label on a washing machine indicates that the washer will use $85 worth of hot…

A: Given,

Q: FL uses 60.0 W in an hour. Calculate the energy consumed buy the bulb?

A: Given  Power = 60 W Time = 1 hour = 3600 sec

Q: When a battery provides power to a hand-held fan, what kinds of energy are present and how do they…

A: Given:  A battery operated hand held fan The law of conservation of energy states that the energy…

Q: A large household air conditioner may consume 15.0 kW of power. What is the cost of operating this…

A: The total time in hours for which the air conditioner operates is

Q: A school is paying $0.12/kWh for electric power. To reduce its power bill,the school installs a wind…

A: Power generated per year

Q: 13. Which is not a unit of energy? O Newton O Joules O Ergs O kilowatt - hr

A: Newton is unit of force Joules  is unit of energy  SI unit Erg is unit of energy in cgs unit…

Q: A large household air conditioner may consume 14.0 kW of power. What is the cost of operating this…

A: Unit of power=KiloWatt=KW Unit of Time=hour Power=Energy/time Energy=Power X time Unit of energy is…

Q: How much work does a 5000 Watt clothes dryer do when you run it for 30 minutes? 30 minutes = 1,800…

A:

Q: Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B…

A:

Q: True or False  Like mechanical energy, current electricity transfers to PE to KE and into work?

A: In mechanical energy in various cases, the Kinetic energy transfers to potential energy and vice…

Q: A vacuum cleaner draws power at 1200 Watt. If you clean your once a week, 20 minutes for each…

A:

Q: An ice cube is placed in a microwave oven. Suppose theoven delivers 105 W of power to the ice cube…

A:

Q: Which of the following would consume the least energy? a)A 60 W light bulb left on for an hour b)A…

A:

Q: 2 A student used a 9 kW shower for 20 minutes. Electrical energy costs S0.30 per kW h. What was the…

A: Answer (2)  Given  Power (P) = 9 KW  Time (T)  = 20 minute                 = (20/60) h  Electrical…

Q: A. At 7.15 cents per kilowatt-hour, what does it cost to operate a 9.00 hp motor for 10.0 he? B. At…

A: Total energy used by the motor will be, Emotor=9.0 hp10.00 hr           =9×0.7457 kW10.00 hr…

Q: 87. Electric energy units are often expressed in "kilowatt-hours." (a) Show that one kilowatt-hour…

A:

Q: 68. What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is…

A: Given data: Power (P) = 3.00 W Time (t) = 1 year Cost of electricity = $0.0900 per kW.h Required:…

Q: If 60 percent of the potential energy of water flowing over a dam can be converted to electricity,…

A:

Q: s 1 pound of coal to generate one kWh of electricity. How much coal would an average home use in a…

A: in India average use of electricity per day = 5.7 Kwh / day  1 pound of coal to generate one kWh of…

Q: A certain house uses an average power of 485 Watts all day, everyday, for a 31 day month.  If the…

A: The power (P) consumed by the house in a day is 485 W. The energy consumed by the house in a day can…

Q: A 100 watt light bulb has been left on for 20mins. How much work was done? (Reminder 1 watt= 1…

A: In the light bulbs work done is the form energy transfer from one place to another place. The light…

Q: 7.How much time would be required to do the same amount of work in the above question using only one…

A: The expression for the power is given as P=Wtt=WP

Q: A family of five is planning to install solar panels on the roof of their home to help reduce the…

A: Dewr student The energy rating is given in KiloWatt Hour. As we know the power is rate of doing…

Q: 12. Which formula represents the law of conservation of energy? OPE, = mgh ME=KE+ PE…

A: Given There are four options are given We have to choose the correct option for conservation of…

Q: Calculate the electricity bill of the stationery shop for the month of November 2020 if the cost per…

A: "Since you have posted a question with multiple sub-parts, we will solve first three sub parts for…

Q: A water jet consumes 3150 W for 126 hours a week. what is the energy consumed (kWh) for one-year…

A:

Q: 6. Which is not a unit of power? a) Joule per second b) kilowatt-hour c) newton-meter per second d)…

A:

Q: A ceiling fan at maximum speed consumes energy at 64.7 Watts and is used from 9:00 pm to 6:00 am.…

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.