Q: Consider a TV set that consumes 120 W of electric power when it is on and is kept on for an average…
A: The expression to determine the daily cost,
Q: How much energy is consumed by a 1.1 kW hair dryer used for 12 min? How much energy is consumed by a…
A: Given data Power consumed of hair dryer is P= 1.1 kW Time is t= 12 min =0.2 hour The amount of…
Q: An electric motor is almost identical in construction to an electric generator, but the motor…
A: Electric generator converts mechanical energy in to Electrical energy but Electrical motor converts…
Q: A person uses a 1.92 kW air conditioner for 10 hours and a 0.22 kW device for 4 hours. How much will…
A: Answer Energy consumption = power * time Given 1.92 kW a/c for 10 hours 0.22 kW device for 4 hours…
Q: A typical candy bar contains approximately 250kcal. How long would this power a 60 W lightbulb?
A: Convert kilo calorie to joule. E=250 kcal4184 J1 kcal=1.046×106 J The relation between power and…
Q: An electric clothes dryer is rated at 2,200 W. How much energy does it use in 45 min?
A: Write the formula for power.
Q: Which is not a unit of power? a.joule per second b.kilowatt-hour c.Newton-meter per second…
A:
Q: How much does it cost to run a refrigerator all day for 6 months (30 days/month) if it requires 3.5…
A: Power is defined as the rate at which the work is done per unit of time. Higher power means having a…
Q: A fan in an air conditioning unit rated at 250 WCome on for an average of 5.0 min at A time, a…
A: Power of fan = P = 250 W Average time fan is on at a time = t=5 min = 300 sec Number of times a day…
Q: Verify the energy unit equivalence that 1 kW . h = 3.60 X 106 J.
A:
Q: 7. A 60W light bulb runs for 3 hours, how much electrical energy has it used?
A: Power = P = 60 W time = t = 3 hours = 3 x 3600 = 10800 s energy = E = ?
Q: How much does it cost to run a 1500-W hair dryer for 37 minutes each day for one month (30 days) at…
A:
Q: A water jet consumes 3950W for 126 hours a week What is the energy consumed (kWh) for a one-year…
A: Given Power consumed by water jet =3950 W =3.950 kWh Used for 126 hours a week.
Q: Energy is losses in a vacuum due to air resistance. Select one: True False
A: In theory. ,In vaccum there is no matter or air particles or it is low pressure container or space…
Q: A lamp consumes 1000 J of electrical energy in 10 s. What is its power? L00
A:
Q: Calculate the cost of leaving 1300 W refrigerator for a year, if the electric company charges you 12…
A: Write the formula for the total amount of power used in a year. Ptotal=watts×hours used per day×days…
Q: How much does it cost to run a 1500-W hair dryer for 18 minutes each day for one month (30 days) at…
A: The equation for the electrical energy consumed is given by
Q: 1 Joule is Equal to how many erg
A: Joule is equal to energy transferred to an object when a force of One Newton acts on that object in…
Q: The rate at which energy is transferred is called: A) Power B) Watt C) Volt D) Potential
A: The rate of transfer of energy is called power. P = energy / time
Q: An electric clothes dryer is rated at 2,000 W. How much energy does it use in 35 min? kWh
A:
Q: What is the electrical energy consumption of a 70-watt TV that is used for 110 hours?
A: What is the electrical energy consumption of a 70-watt TV that is used for 110 hours?
Q: 10. A 100 MW expressed in powers of 10 is given by: * O 1.0 x 106 W 1.0 x 107 W 1.0 x 108 W 1.0 x…
A: The power in megawatts is given as,
Q: At 15 cents is a kilo Watt per hour. What does it cost to operate 1200 W for 1 hour?
A: We have the given information: Power is P=1200 W Time is t=1 hr Calculating energy in kiloWatt per…
Q: An electric water heater consumes 4.88 kW for 3.85 h per day. What is the cost (in dollars per year)…
A: In one day number of kWh used, 4.88×3.85=18.788 kWh
Q: If the capacitance of capacitor A is 84.0 μF, the capacitance of capacitor B is 56.0 μF, and the…
A:
Q: What is the power dissipated in the 200 1esistor when 402 30 a 30 2 30 Lm 202 Select one: a. 15 W ww…
A: power disipation = I2 R
Q: The units of Power is Select one: a. N.sec b. J/sec c. J.sec d. N/sec e. J/sec2
A: solution as
Q: A water jet consumes 3650W for 126 hours a week What is the energy consumed (kWh) for a one-year…
A: Given, The circulating pump consumes 3650W per hour. If it is on for a week i.e. 126 hrs then,…
Q: How much energy or work in ergs is needed to move 12 billion electrons in a field whose electric…
A: Number of electrons, n = 12 billion = 12×109 Electric potential, V = 50 KV Work in ergs, W = ?
Q: How much does it cost to run a 1500-W hair dryer for 41 minutes each day for one month (30 days) at…
A: The expression for the electric power in terms of energy and time is as follows: P=EtE=Pt…
Q: How much does it cost to operate a 1200-W hair dryer for 4 hours at 30 cents/kWh
A: Concept used: Net operation price of a device is found by multiplying its per unit cost with units…
Q: Using the equation below, calculate the kinetic energy for the following baseball: Ke-0.5 x mv…
A:
Q: then the value of capacitance per meter
A:
Q: in physics, called power is which is difFined as the quantity a
A: Since, it is known that unit of Energy is kg.m2.s-2. Also power is defined as rate of doing work.…
Q: Your excercise regime is running up a flight of stairs every morning. if it takes you twice as long…
A: Given : normal time to climb the stairs =t0 time taken to climb on a special day =2t0 Determine…
Q: The energy content of a fully charged 12 V storage battery of capacity 50 A-h is О а. 36 J b. 0.60kJ…
A: Energy content of a storage battery= E= Voltage×charge passed voltage= 12 V charge passed= 50 A h =…
Q: What energy is produced by a 200 W light bulb lit for 2.7 hours? Answer in units of J.
A: Power is defined as the rate at which energy is expensed or rate of doing work. P=Et
Q: A 1500 W portable heater will use 1.5 kW per hour. In 4 hours, it would use Watts?
A:
Q: Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?
A: The expression for energy in terms of power is,
Q: A light bulb has a power of 300W. What is the energy dissipated by it in 5 minutes? Select one: a.…
A:
Q: Which costs more, running a 2,000-W hair dryer for 3 min or leaving a 40-W lamp on overnight (10 h)?
A: E=Pt=2000 W3 min60 s1 min=3.60×105 J
Q: How much does it cost to run a 1500-W hair dryer for 18 minutes each day for one month (30 days) at…
A:
Q: Find the cost of a 0.500-kW computer that runs 15 hrs per day for one month (30 days) if the cost of…
A: Given data: Power (P) = 0.500 kW Daily uses = 15 hours per day Number of days per month = 30 days…
Q: The instantaneous power can be written as? O A) P-F/V OB) P= F.r OC) P-F.A OD) P= F.V
A:
Q: An electric clothes dryer is rated at 2,900 W. How much energy does it use in 20 min?
A: E=Pt
Q: If a 12V 4 W light bulb is plugged with a 6V battery, what is the electric power?
A:
If a watt is a joule/sec, and an American family uses 1500 kilowatt hours per month. What are they buying?
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- As shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor, exerting on it a force of magnitude F directed upward at an angle with the horizontal. (a) At what rate is the person doing work on the cleaner? (b) State as completely as you can the analogy between power in this situation and in an electric circuit.A standard computer has a power supply of 550 W, and many people just leave their computer on all thetime. Calculate the amount of money it costs to run a 550 W computer for 24 h, if electricity costs 7.5¢/kWh.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
- In a particular city, electrical energy costs $0.13 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 40.0-W light bulb continuously for 24 hours? How is power related to energy? Be sure to find an energy in units of kilowatt-hours. Then, use it along with the cost rate in dollars per kilowatt-hour to find a cost in dollars. (b) A modern LED light bulb that emits as much visible light as a 40.0-W incandescent only draws 4.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 4.80 hours? 2$ Need Help? Read ItHow many joules are in 1 kWh (kilowatthour)?At home I have a 350W motorized washing machine that I use to wash three times a week, 2 batches of clothes of 22 minutes each each time. Based on this problem, answer the following questions: a) How much energy in Joules do I "consume" in a year? (use 52 weeks for your calculation) b) based on the conditions of the previous question, what consumption would you have in kWh? c) How much do I pay, annually, in dollars, for the use of the washing machine, if the rate for energy from my electric company is 0.17443 / kWh?
- Every day a certain household uses a 3,3 kW electric stove for 72 minutes, six 6 hours each and miscellaneous appliances amounting to 1,6 kW h. The 3 kW hot w ninutes during the day. If electricity costs 35 c a kWhA 1.5 kW kettle is used 5 times a day for five minutes each time. What is the cost of running the kettle for a week, if the unit cost of electricity is 5.00/kWh? O P 22/week O P 187.50/week O P 262.5/week O P1,312.50/ weekSuppose a heart defibrillator consumes 425 j of energy in 10.5 ms. What is the average power output of the defibrillator, in W? 
- If you have an average of 6.5 hours of online class per day for 204 days of school per year, how many kilowatt-hours are consumed and what is the annual cost of using your laptop if the estimated cost per hour of a laptopis P0.75 / kWh? (base this, a regular laptop uses 90 Watts.)A typical desktop personal computer uses around 100 W of power when carrying out intensive processing, such as running a video game. If you play such a game for 90 minutes, how much energy (in joules) will it use?The energy consumed by 2 kW electric motor for 1 minute is Blank 1 Joules.
