A laptop computer consumes about 40 watts of electricity per hour when operating. At $0.20 per kilowatt-hour, how much does a laptop cost to operate for 10 hours?

Q: What is the kinetic energy of a 110 kg object that is moving with a speed of 12.5 m/s?

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Q: What is the Kinetic Energy of a 478 kg object that is moving with a speed of 15 m/s?

A: The mass of the object, m=478 kg   The velocity of the object, v=15 m/s

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: a crane lifts an I-beam to a height of 30 meters, giving it a gravitational potential energy of…

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Q: A laptop computer consumes about 40 watts of electricity per hour when operating. At $0.20 per…

A: Power of laptop = 40 watt Time = 10 hours  Cost of electricity = $0.20 per kilowatt hour

Q: How much power is used if a force of 65 N is used to push a box a distance of 8 m in 9 s?

A: Required :  Power used.

Q: What is the work done by a tugboat that exerts a force of 12,500 N to transport a load for one…

A: Given in question - Force (F) = 12500N                                  Displacement(d) = 1000 km =…

Q: A high-end gaming PC's most power-consuming component is... How much power can it produce at its…

A: In this question we have to answer which is the most power consuming part of the PC. Please give…

Q: A bakery has a 6,100W oven that runs every day from 5am until 7pm making tasty pastries for the…

A: Given: Power of bakery = 6100 W = 6.1 KW The time of bakery runs per day = 5 am to 7 pm = 14 hours…

Q: By converting the power of loudspeaker,3700 000 Watt into kilowatt, we get

A: Power is defined as the ratio of work done and the unit time. It is generally represented by the…

Q: The kinetic energy of a 68 -kg athlete running at a velocity of 4.5 m/s is about

A: Given  Mass of athlete = m = 68 kg  Velocity of athlete = v = 4.5 m/s  The kinetic energy is to be…

Q: A washing machine has a power requirement of 2500 W. Every month the machine is used for 6.0 hours.…

A: power requirement of washing machine = 2500 Wtime = 6 hours cost of electricity = 13 cents/kWh

Q: A 14 kilogram boulder falls off a cliff and strikes the ground after falling 40 meters. How much…

A: Given data- Mass of boulder m=14 kg It strikes the ground after falling 40 meters so h=40 m

Q: The kinetic energy of a 68 -kg athlete running at a velocity of 4.7 m/s is about

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Q: How much mechanical work is done in letting the 2kg brick fall a distance of 1 meter?

A: Given data:     Mass of the brick, m = 2 kg       Distance, D = 1 m      Acceleration due to…

Q: It took a 36,000 Newton force to make a car move 1,500 meters. How many Joules of work is performed…

A: Given: Force F=36000N Displacement d =1500 m To find: Work W=??

Q: A 1,328 kg car is driving up a 992.2 meters mountain. If it will take 1.782 minutes to get to the…

A: Given: The mass of the car is 1328 kg. The height of the mountain is 992.2 m. The time taken by the…

Q: The engine of a machine can deliver 947J of energy to the machine in 63 seconds.  What is the power…

A: The energy delivered by the engine is, E=947 J The time duration to deliver the energy is, t=63 s

Q: If 92 Joules of work are needed to move a crate a distance of 6 meters, what is the weight of the…

A: Definition of work done Work done is by a force is measured as W=F×d ................(1) Where F is…

Q: laptop cost to operate for 10 hours

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Q: How much energy is used in 20 minutes of listening to music on an mp3 player that uses 9 watts of…

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Q: what is one netwon-meter equivalent to? 1. kilowatt * hour 2. watt * sec 3. joule/sec 4. kg *…

A: The newton-metre N·m is a unit of torque in the SI system. One newton-metre is equal to the torque…

Q: A ball with 100 J of PE is released from a height of 10 m. What will be the KE of the ball at 5 m?

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Q: A computer uses 1.62 x 10^4 J in one hour. What is the power used?

A: The energy usage of device is 1.62 ×104J in one hour.    Power is the rate with respect to time at…

Q: How much work is done by a machine to lift 750 kg of bricks to a height of 8.2 m?

A: Work done = gain in the potential energy by the bricks = m×g×h Here, m= 750 kg            g= 10 m/s2…

Q: How much work is done lifting a 30 kilogram block 3 meters?

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Q: How much power does a high-end gaming machine need to remain operational?

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Q: If a man pushes a lawnmower with a force of 20 lbs a distance of 60 ft down a yard, how many ftlbs…

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Q: A 1,148 kg car is driving up a 1,692.1 meters mountain. If it will take 2.599 minutes to get to the…

A: The given data are: m=1148 kgh=1692.1 mt=2.599 m Here, m is the mass, h is the height, and t is the…

Q: How much work is done lifting a 120-pound chair from the ground to the top of a 40-foot building…

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Q: An object has a kinetic energy of 25 J and a mass of 34 kg , how fast is the object moving?

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Q: In 3-phase power measurement using two wattmeter method , if one wattmeter reads 3 times the other,…

A: We know that power factor can be given as shown below.

Q: How much power is required to lift a 3061 g chair at a height of 0.20 m in 2 s?

A: Mass of chair = 3061 gm = 3.061 kg. Weight = 3.061 ×9.8 = 30 N Workdone to lift the chair to 0.2 m…

Q: A lamp consumes 1200 J of electrical energy in 10 seconds. what is it's Power?

A: Introduction :  In this question we are provided with value of time and work.with these data we have…

Q: how much energy does a 5 kg ball have when it is 2 m above the ground and it is moving at 4 m/s?

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Q: how much work is done when a box is pushed with a force of 10n for 4 m across the floor

A: Here the force is 10N, and the distance is 4m,

Q: A book on a shelf has potential energy of 200J and two times the mass of a book next to it. What is…

A: Given data The gravitational potential energy for the book is given as PEh = 200 J. The…

Q: If energy cost 5 cents per kilowatt-hour, how much is one horsepower-hour worth?

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Q: .What is the Kinetic Energy of a 100 kg object that is moving with a speed of 12.5 m/s?

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Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic power, in kW…

A: Given data The mass of the sprinter is given as m = 75 kg. The initial velocity of the sprinter is…

Q: The Laptop consumes 0.71 kWh of energy in one day. What is the average power consumption of this…

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Q: If a hair dryer is rated at 1750 W, how much energy does it require in 6 minutes

A: Consider the energy consumed by the dryer in hour is, E=Pt Here, P is the power consumed and t is…

Q: What is the cost of running a 0.200-kW computer 6.00 h per day for 30.0 d if the cost of electricity…

A: The energy consumed in kWh is

Q: If a vehicle has a horsepower of 300, how much energy does it burn in 2 minutes?

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Q: If a 1000 kg body is moving at 5 m/s, what is the kinetic energy?

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Q: A machine develops 30 W of power in 3 minutes. How much work is done by the machine in this time?

A: The work done and power relation is P=Wt t=3 min=180 sP=30 W

Q: A crane exerts 56,000 Newtons of force over a distance of 4.5 meters. How much power was generated…

A: Given :-  F = 56000 N distance = 4.5 m time = 4.2 sec

Q: Some outdoor security lights are kept on overnight - 7 hours. They use 164 watts of power (figure…

A: Answer:-  Given  Power (P) = 164 Watts  P = (164/1000) kW = 0.164 kW  Time (t) = 7 hours  We know…

Q: How many foot-pounds of work is done when a 2,000 pound airplane is rolled up a 20 foot ramp onto a…

A: Given data:  Weight (mg) = 2,000 pound Vertical height (h) = 3 foot Required: Work done (W)