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 is $0.120 per kW⋅h?

Q: A pumped water storage plant has a head of 600 m and volume 5 x 10° m². How much potential energy is…

A: Height of Storage tank equal to 600 metre

Q: Take a boat with a mass of 1.5 kg and lift it to a height of 2m. Compute the amount of work done.

A: Given:Mass,m=1.5 kgHeight,h=2mGravitational acceleration,g=9.81 m/s2Now,Work done,wW=Fdcosθ…

Q: A force of 2 pounds is required to hold a spring 2.4 inches beyond its natural length. How much work…

A: Given: force applied, F = 2 pound displacement, S  = 2 inch

Q: Calculate the cost of running a 1.5-hp air conditioner straight for one day if energy costs…

A: Power is the rate of doing work. Its unit is watt in international system of unit. It can also be…

Q: A mass of 5000 kg is raised through a height of 10 meters in 20 seconds. What is (a) the work done…

A: Solution: (a) Work done in raising a mass up to certain height is given by: W=mgh Here, m is the…

Q: An elevator weighs 3600 N and must be lifted at a constant speed a vertical distance of 2.5 m in…

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Q: A small car has a mass of 800 kg, and its efficiency is 14%. How much energy is transferred from the…

A: Conservation of energy theorem states that energy cannot be created or destroyed. It can only be…

Q: How much work is done on a small car if 4370 N force is exerted to move it 85.5 m to the side of the…

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Q: A man with 80.0 kg mass climbs a stairs with a height of 7.0 m within 15.0 seconds. What is his…

A: P=Et=mght

Q: 50 W of power is required to to lift a barbell in 5 sec, How much work is done?

A: Power delivered on the system is equal to rate of work done on the system.

Q: How much work is performed by a force of 48.5 N in moving an object a distance of 7.00 m in the…

A: Given data:  Force (F) = 48.5 N Distance (d) = 7.00 m

Q: How much power does it take to lift a 49kg person a 5m vertical distance in 20s?

A: Given: mass, m = 49 kg  height, h = 5 m  time, t = 20 s

Q: Compute the kinetic energy of 1200kg automobile traveling at 20km/hr.

A: Given, Mass of automobile,m=1200 kg Speed, v=20 km/h=5.5 m/s

Q: How much work has to be done to accelerate 1320kg car from 115km/h to 130km/h ?

A: Given data:  Mass of car (m) = 1320 kg Initial velocity of car (Vi) = 115 km/h Final velocity of car…

Q: What is the speed of a 137 kg woman running with a kinetic energy of 973.5 J?

A: kinetic energy =12mv2

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

A: The number of hours for which the clock is operated can be obtained as 1 year=1year×365 days1year×24…

Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 250 kg to a height…

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Q: If an input of 100 J in a pulley system increases the potential energy of a load by 60 J, what is…

A: Given that Input energy = 100 J Output energy = 60 J

Q: 6 J of work is done by a force in moving an object uniformly through 120 m in 1 minute. The force…

A: The solution can be given as,

Q: How long Does it take a worker producing 200W of power to do 10,000 J of work?

A: Given data The power required by the worker is given as P = 200 W. The work required to do is given…

Q: What is the approximate cost of operating a 65 W light bulb for 3.0 h per day for 1 week, if the…

A: The given values are, P=65 Wthour/day=3.0 h/daytday=1 week=7 daysrate=14 cents/kWh

Q: A 1600-pound elevator is suspended by a 200-foot cablethat weighs 10 lb/ft. How much work is…

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Q: A small car has a mass of 800 kg, and its efficiency is 14%. How much energy is transferred from the…

A:

Q: If a runner exerts 350 J of work to make 150 W of power, then how long did it take the runner to do…

A:

Q: What work is done by a forklift raising a 487 kilogram box 2.1 meters?

A: Given  Mass m=487 kg Height h=2.1m

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: A horse plows a 150 m-long furrow in 7 min, exerting a force of 750 N. What is its power output,…

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Q: A pallet weighing 575 N is lifted a distance of 20.0 m vertically in 10.0s. What power is developed…

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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: An object with mass 99 kg is moving at the velocity of −3.6 m/s. What is its kinetic energy in the…

A:

Q: A 1600 lb elevator by a 200ft cable that weighs 10 lb/ft. How much work is required to raise the…

A: Consider 1600-lb elevator is suspended by a 200-ft cable that weighs 10 lb/ft The objective is to…

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

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Q: If Marga exerts 350 J of work to make 125 W of power, how long did it take her to do the work in…

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Q: A 4.2 kg box is lifted up to a height of 2 m. What is the gravitational potential energy (GPE)? *

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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: What is the average power consumption in watts of an appliance that uses 6.62 kW · h of energy per…

A: We know that the appliance uses 6.62 kW.h of energy per day and in this question, we need to…

Q: The done work for man has power * (5.2 Watt) during (1 hours) is

A: Given: Power P=5.2 Watt Time  t=1 hours=1×60×60=3600 s

Q: Ignoring friction What is the minimum work needed to push a 950-kg car 770 mm up along a 7.5 degrees…

A: The mass of the car is m = 950 kg. The angle of inclination of the plane with the horizontal is θ =…

Q: A standard computer has a power supply of 550 W, and many people just leave their computer on all…

A:

Q: How do I set this problem up? What average power does a weightlifter need to lift 225 lb a distance…

A: The average power is given as                                   P = W/t where W is the work done and…

Q: An electric winch is designed to lift a mass of 330 kg vertically from the ground to a height of…

A:

Q: What is the kinetic energy of a 1066 kg car moving at 29.8m/s(66.7mi/h)?

A: Kinetic energy of an object is given by,                K.E = 12mv2     ----(1) where,    m - Mass…

Q: Compute the Force Work done=0.8124 J Displacement=1.112 m

A: Given data : Work done=W Displacement=d   To find : Force

Q: How long does it take a worker producing 200 w of power to do 10000 j of work?

A: Given information:Power (P) = 500 w.Work need to be produced (W) = 10000 J.We know that power is…

Q: A student pushes a box 32M across a smooth horizontal floor using a constant force of 109N. if the…

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Q: If a person pushes a 2kg box with a force of 10N and a velocity of 10 m/s, what is the power?

A: Answer              100W

Q: How long (in s) does it take a worker producing 155 W of power to do 10,100 J of work?

A: The relation of the power is given as P=Wt Let W be the work done, P be the power, and t be the time…