In 1953 two climbers, Hillary & Norgay, made the first successful ascent of Mt. Éverest. How many slices of bread did each climber have to eat to compensate for the increase in gravitational potential energy of the system of climbers. (One piece of bread releases about 1.0x106 J of energy. The body converts the chemical energy from the bread at 5% efficiency.) Use 62kg as an approximation for the mass of each climber.

Q: A bag of wheat weighs 4 kg. To what height should it be raised so that potential energy is 12 J?…

A: Given data,    Acceleration due to gravity  =  g    Potential energy  =  P.E    Mass of the bag  =…

Q: How does conservation of energy explain why something that is falling should speed up? O It loses…

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Q: A charge of -3.00 (mu) C is fixed at the center of a compass. Two additional charges are fixed on…

A: charge at center (q) = -3 μC first additional charge (q1) = -4μC due north second additional charge…

Q: In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using…

A: Mass of the object m = 281.5 kg distance lifted d = 17.1 cm = 0.171 m

Q: Why must work be done at the beginning of a roller coaster ride in order for the ride to proceed?

A: Roller coasters do not have engines, thus in order to function roller coasters, they are first…

Q: Ariane, a 56 kg skier, uses her poles to accelerate from rest to a speed of 6.01 m/s in 41.7…

A: a) Write the work-energy equation and substitute the corresponding values to calculate the work done…

Q: A bag of wheat weight 300 kg .To what height should it be raised so that potential energy is 9600 J?…

A: Given data :        Mass of the bag  =  m         Potential energy   =  P•E         Acceleration due…

Q: If you push against an immovable object, such as a brick wall, you may tire yourself out, but you…

A: When we apply some force (F) on an object and it gets displaced (d) then work done on the object is…

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: How much work is done by pulling the box in the figure for distance 20 em F-30 N 60 O 300 N O 3J O O…

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Q: How much work W is done by the force to move the object from x=2 m to xy=7 m? F. (N) 6 0 2 4 6 8 10…

A: Given :- Graph between force and distance.

Q: Cite an example in which a force is exerted on an object without doing work on the object.

A: The work done will be zero when the applied force on an object is perpendicular to the displacement…

Q: In physics, what conditions must be satisfied if work is to be done?

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Q: What is the difference between kinetic and potential energy?

A: Here given the name of two energy . Kinetic and potential energy. We have to define the difference…

Q: In physics, the amount of work done on an object is the quotient on the objects and the distance…

A: Work done on an object is the dot product of force applied and the displacement of the object.…

Q: If you apply a deforming force on an object and let it come to equilibrium, what happened to the…

A: The work that we do on the body will be stored in the body in the form of strain energy.

Q: as the vertical distance of the The potential energy of an object same object from the surface of…

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Q: Write down a relation connecting potential energy and force.

A: Relation connecting force and potential energy is,

Q: Which situation demonstrates a positive work done? O A man holding a barbell in the air. OA basket…

A: Introduction: The work done is equal to the product of applied force and displacement in the…

Q: A 2.5 kg crate sliding along the floor has an initial velocity of 2.1 m/s in the +x direction.…

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Q: 16. A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal. He wants…

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Q: Consider the skateboarder in the figure below. If she has a mass of 58 kg, an initial velocity of 30…

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Q: How much work is required to throw a ball with a mass of 0.27 kg 30.4 m/s? Assume the ball starts…

A: Work done = change in K.E Work done = (K.E)f -(K.E)i                   = 1/2mvf2-1/2mvi2…

Q: Nellie Newton does work on a box by pushing it with a constant force of 100 N over a distance of 4…

A: Assume that Nellie Newton does a work by pushing a box with a constant force F = 100 N over a…

Q: When exiting the highway, a 1100 kg car is traveling at 22 m/s. The car's kinetic energy decreases…

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Q: The world record for the men's high jump is 2.45 m. To reach that height, a) what is the minimum…

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Q: A 2-kg object moving on a horizontal frictionless surface with a speed of 4 m/s is brought to rest…

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Q: The system is released from rest with no slack in the cable and with the spring stretched 230 mm.…

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Q: hi

A: Given value--- mass = 10 kg. force = 10 N. distance = 5 m. We have to find--- work done by…

Q: How much work is required to throw a ball with a mass of 0.46 kg 33.1 m/s? Assume the ball starts at…

A: Given Mass of ball = 0.46 kg Initial velocity of ball = 0 m/s Final velocity of ball = 33.1 m/s We…

Q: A 1,100 kg horse is walking at 2.0 m/s. What type of energy is being described? Your answer: O…

A: Given, Mass of the horse(m)= 1100 kg Speed of the horse walking (v)= 2m/s

Q: Discuss the origin of the unit horsepower.

A: Horsepower unit was first time used by James Watt in 1782. The  story refers that James Watt uses…

Q: A 4 kg ball falls from height of 29. What willbe potential energy of the ball after 1 second? Use g=…

A: Given that:- mass, m = 4 kg height, h = 29 m time, t = 1 sec

Q: Consider the constant force: F = {-50, -30, 40}N. What is the work done by this force on a…

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