Why are solar power and wind power somewhat unreliable?

Q: How much work does it take to slide a crate 10 m along a horizontal loading dock by pulling it with…

A: Given that the  distance and angle and also given the force. Then We have to determine the work…

Q: While rearranging a dorm room, a student does 436 j of work in moving a desk 1.6 m. What was the…

A: Amount of work done by the student, W = 436J displacement of the object, d = 1.6m Horizontal force…

Q: A force of F = 1.12 x 104 Newtons does work of W = 1.18 x 10° Joules. What is = Work Force)? the…

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Q: A force = (3xî+ 5yĵ), where is in newtons and x and y are in meters, acts on an object as the object…

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Q: If a person of mass 100.0kg climbs a 2.00m high set of stairs in 4.00s, how much work do they do?

A: Given data: The mass of person is m=100 kg. Height of stairs is h=2.00 m. Time taken is t=4.00 s.

Q: To allow a block to move from rest to a distance x, it requires a force F given by F = 40x - 6x2,…

A: The work done by the variable force is given by  W =∫F.dx where, F is the force and dx is the small…

Q: A skier moving at 5.00m/s encounters a long, rough horizontal patch of snow having a coefficient of…

A: Given data: The initial velocity of skier is, v=5.00 m/s. The coefficient of kinetic friction is,…

Q: .How much work is done in lifting a 2-kg ball 0.5m high? Express your answer in a) joules and b)…

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Q: Why do you do no work on a 25-Kg bagpack when you walk a horizontal distance of 100mm?

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Q: Why do we say that the work done by coolie carrying a suitcase along a horizontal road is zero?

A: When a coolie lifts the luggage, he applies the force in the upward direction, which is against…

Q: If your mother ask you to lift a 1 sack of rice and bring it home with a speed of 10km/hr for…

A: Work is said to be done when force applied on an object produces motion in  the object in the…

Q: A box of winter jackets of mass 76 kg is droped from a stationary helicopter at an altitude of 98 m.…

A: The work done by the air resistance is the loss in kinetic energy according to conservation of…

Q: If you pull a 9 kg mass vertically up 1.6 m at constant velocity, how much work do you do?

A: Given Mass= 9[kg] Height to which the mass is pulled up vertically= 1.6[m]  Work is said to be done…

Q: What is the work done on a 3 kg cart that accelerates from 5 m/s to 20 m/s. (A 22.5J (B 45J c)…

A: Given data:  Mass (m) = 3 kg Initial velocity (Vi) = 5 m/s Final velocity (Vf) = 20 m/s Required:…

Q: Can the normal force on an object ever do work? yes no

A: Yes sometimes Normal force also do works on an object.

Q: Andy carries a sack of rice on his shoulder by applying a 250N force. Andy moves 8 m horizontally,…

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Q: How much work is it to lift a 25  kg sack of cement vertically 4.3 m?

A: Given data:  Mass (m) = 25 kg Height (h) = 4.3 m Required: Work done (W)

Q: while rearranging a dorm room, a student does 343 J of work in moving a desk 3.3 m. what was the…

A: Work done = 343 J displacement = 3.3 m Fhor = ?

Q: Why do you do no work on a 25-kg backpack when you walk a horizontal distance of 100 mm?

A: When a person is carrying a backpack, the weight of the backpack is in the vertical direction. But…

Q: Why is it that the work done in holding a bag w above the floor is 0?

A: GivenF=1 N1 m above the floor

Q: A force F= 9xi - 2yj, where Fis in Newtons and x and y are in meters. Find the work done if the…

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Q: A student is carrying a heavy backpack that weighs 252 N, and walks a distance of 365 m horizontally…

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Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…

A: First method: According to the Newton’s second law, the acceleration of the object is, F=maa=Fm=10…

Q: Find the value of force if work done is 520 J and displacement is 42 m

A: Given : Work done (W) = 520 J Displacement (d) = 42 m

Q: How much work does it take to slide a crate 26 m along a loading dock by pulling on it with a 180-N…

A: Given Information: The distance is D=26 m The force is F=180 N The angle from the horizontal is 26°…

Q: Calculate the total work done on a 1550-kg car as it coasts 20.4 m down a hill with f = 5.00°. Let…

A: Let m be the mas of the car, s is the distance traveled down the hill, and θ is the inclination…

Q: A hill is 100 m long and makes an angle of 12° with the horizontal. As a 50-kg jogger runs up the…

A: Given : Length of the hill, l = 100 m The hill makes an angle of 12 degrees with the horizontal.…

Q: How much work is done when a hoist lifts a 260-kg rock to a height of 7 m? (Use 9.8 m/s2 for the…

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Q: How much work (in J) is required to move a box that weighs 13 kg upward by 65 cm? Use the fact that…

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Q: Discuss whether any work is being done by each of the followingagents and, if so, whether the work…

A: The definition for work is,

Q: Is work a vector quantity? In other words does it need a direction associated with it ?

A: To define work we just need magnitude and not direction. Also work is the dot product of two vector…

Q: Identify the force present and explain whether work is beingperformed in the following cases: (a)…

A: Given:  a pencil and a spring which is compressed

Q: What is the efficiency of an out-of- condition professor who does 2.10 x 10^5 J of useful work while…

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Q: A 3.00N rock is thrown vertically. At 14.3m v=24.9 m/s. What is the initial velocity in terms of the…

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Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: your parents demand that you pick up the book and put it on a shelf that is a height of 1.8 m off…

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Q: Find the work done in joules by gravity as an object of the mass m=14 kg is raised up at constant…

A: Mass of object m = 14 kg Initial height h1 =34 m Final height h2 = 75 m g = 10 m/s²     Concept…

Q: How much work does Ryan do as he carries this bag of potatoes to his car, which is parked 45 m away?…

A: Given data:    Distance, d = 45 m

Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m…

A: Force, F=5 N magnitude of displacement, d=0.6 m Angle between the force and displacement, θ=0° Work…

Q: Find the work done in joules by gravity as an object of the mass m=9 kg is raised up at constant…

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Q: Find the work done in joules by gravity as an object of the mass m 5 kg is raised up at constant…

A: Mass of object m = 5 kg Initial height h1 = 26 m Final height h2 = 69 m g = 10 m/s²

Q: How much work is done when a hoist lifts a 290-kg rock to a height of 5 m? (Use 9.8 m/s2 for the…

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Q: How much work (in J) is required to move a box that weighs 18 kg upward by 35 cm? Use the fact that…

A: Given, Mass  of the box m = 18 Kg Upward distance h = 35 cm = 0.35 m Acceleration due to gravity g =…