A washing machine has a power requirement of 2500 W. Every month the machine is used for 6.0 hours. If the cost of electricity is 13 cents/kWh, then how much does it cost to run the machine ?

Q: A coal power plant has a rated output of 150 MW and a first law efficiency of 41%. Coal has an…

A: We are aware that a coal power plant has a first law efficiency of 41% and a rated output of 150 MW.…

Q: What is the minimum work that a motor must do to lift a 50 lb object from the floor to a height of…

A: CONCEPT: We know,              work done = force x displacement      So, work done  W=F×d Where,…

Q: How much power is provided by a motor if it does 27 J of work in 3.0 seconds?

A: Work = W = 27 J Time = t = 3 s Power is defined as the work done per unit time. The mathematical…

Q: maximum energy that can be transferred

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Q: person lifted a bag of groceries 2.89 m from the floor onto a counter top using a constant force of…

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Q: ase answer number 4

A: Given:-  1200-watt microwave oven, if you make microwave popcorn in 5minutes price per kWh is 13.267…

Q: Four light bulbs, rated at 100 W, 75 W, 50 W and 25 W each, are in parallel. What is the total power…

A: Given Data, Power of the four bulbs are = 100 W, 75 W, 50 W, 25 W

Q: A force of 35 N is applied to a 15.3 kg object. The object moves 3.69 m in the direction of the…

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Q: A 64 kg student travels from the first floor to the fourth floor of a school (a height of 15 m).…

A: Calculate the total work did she do climbing the stairs. Work doneW=Massm×g×height(h)…

Q: A mass of 8 kg is traveling at a constant 10.8 m/s when a 39 N force, F, starts to act in the…

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Q: A force of F = 159 N pulls a mass of 15 kg a distance of x = 4.8 m. How much work is done by the…

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Q: Motor A Initial Investment 1,250,000 1,300,000 Horse Power 100Hp 100Hp Efficiency 74% 92% Useful…

A: Given: 1Hp=0.7457 kW

Q: 15 Q 20 Q RL O 30 0 15 A

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Q: Assuming that the diet of an average Canadian consists of 2,000 food calories per day (1 food…

A: Given data :- diet of an average person Canadian = 2,000 food calories per day 1 food cal = 4200 J…

Q: A car generating a power of 98234.82watts is traveling on a road with a coefficient of kinetic…

A: Given data: Power, P=98234.82 watts Coefficient of kinetic friction, μk=0.051 Final velocity upon…

Q: A log is pushed 2 m by a 5 N force. The opposing frictional force is 0.53 N. How much work is done…

A: Work: The work done by any force is the product of the force with the displacement of the object.…

Q: e energy cost per onth for operating 15- fluorescent lamp (40 Watts) for 150 hours ea nditioning…

A: Cost of 1 kWh = P 7.00

Q: The S.I. unit for Potential Energy is Watt. Select one: O True O False

A:

Q: A force of F = 151 N pulls a mass of 15 kg a distance of x = 3.3 m. How much work is done by the…

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Q: An average-sized home refrigeration unit has a 1/19−hp fan motor for blowing air over the inside…

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Q: How much power will a 260 N student develop if he/she climbs a flight of stairs 12 m from the ground…

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Q: An 80.0 kg student runs up a flight of stairs that is 8.0 m tall. How much work have they done going…

A: The mass of the student is m = 80 kg. The height of the flight of staircase is h = 8.0 m

Q: 59. a. Find the amount of work done in lifting a 50-lb weight upward 5 ft. b. If 200 N of force is…

A: a. the amount of work done is W=Fd=50 lb5 ft=250 lb-ft

Q: 3) How much energy does a 100-W light bulb use in 8.0 hours?

A: we use the concept of                                       1000W = 1 unit…

Q: Suppose that your refrigerator consumes 150 W of power. If the cost of electricity is $0.15 per…

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Q: What is the average power consumption in watts of an appliance that uses 8.18 kW · h of energy per…

A: The average power consumption is given by Where E = Total energy used, t = total time taken

Q: Four students run up the stairs in the times shown. Rank in order, from largest to smallest, their…

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Q: 6. A 2,500 kg airplane can accelerate on the runway from rest to 250 mph in 15 seconds. What is the…

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Q: A student who weighs 543 N climbs a stairway (vertical height of 4.2 m) in 24 s. (a) How much work…

A: Given: weight of student, W = 543 N  vertical height, h = 4.2 m  time taken to climb, t = 24 s

Q: 12.. Buying electricity Here is an extract from our electricity bill, The coloured text has been…

A:

Q: Chichay uses the washing machine which consumes energy at 300 Watts at normal washing speed. How…

A: Given(s): Power of the machine, P=300 W=0.30 kW It runs for, t=80 min=8060h=43 h Cost of…

Q: How much work is done on a 30.0 kg mass to change its speed from 3.00 m/s to 4.00 m/s over a…

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Q: An object with mass m = 152 kg moving at the speed of v = 0.53 m/s was stopped by an external force…

A:

Q: A 26 meter chain is hanging from a winch located 26 meters above the ground. If the chain weighs 4…

A: Basic: we know that the work done is given by force into. Displacement  so we just find the small…

Q: 7. An electric motor with an efficiency of 80% has a power output of 4.00 horsepower. The power…

A: Given, Output power = 4 horsepower. Efficiency = 80% Motor runs for = 3 hour Charges = $0.15 per kWH…

Q: A 35.0 kg man climbs a 6.0 m ladder. What is the potential energy of the man when he reaches the top…

A: Given data:          Mass of the man (m) = 35kg          Height of the ladder (h) = 6m Formula:…

Q: A person weighing 233 N climbs a flight of stairs 6.0 m high in 6.0 s. What power is required to…

A:

Q: What is the potential energy of an airplane that is only 0.5489 km off the ground and weighs 4120 kg

A: Given that, an airplane that is only 0.5489 km off the ground. That means  Distance, d = 0.5489 km…

Q: A certain handcrank generates power at 75W. How long will it need to be run to fully charge a…

A: Power: The energy per unit time is known as power. Power = Energy/time

Q: (a) What is the average power consumption in watts of an appliance that uses 5.93 kW · h of energy…

A: The energy consumed by any electrical appliance in a given time period is given by following…

Q: A frictionless cart is pulled 9.50 m up an inclined plane in 24.6 s. The power output of the motor…

A: Given S=9.50 m (displacement) T=24.6 s (time) P=3.30*102=330 W (Power of motor)

Q: 6.11 A 180 − lb m person climbs a stairway consisting of 150 stairs, each with a vertical rise of 8…

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Q: You run a washing machine (512 W) and an electric clothes dryer (5000 W) for 1.5 h each daily. (a)…

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Q: Calculate the number of kilowatt-hours (kW-hrs) consumed in a week by an 850- Watt window air…

A: Given,Power of Air conditioner =850 Watt