Work done in a system is ___ a) The measure of energy change b) The measure of useful work c) The measure of displacement d) The measure of force

Q: The energy of a system is conserved, _______________.     provided there are no energy transfers…

A: Although the conservation of energy says, energy can not be created or destroyed but can only be…

Q: A person pushes a wheelbarrow with a horizontal force of 50 N on levele ground over a distance of…

A: Drawing Free body diagram of the wheelbarrow We know that workdone W=F×D×cos(θ)…

Q: Choose the correct statement a A displacement must cause work b Work is not dependent on…

A: We know that the workdone is given as the product of applied force and the displacement of the…

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

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Q: eacher lifted a 10 N box and placed it down.  Did she do any work?  Explain your answer using

A: Assume that the teacher does only enough force to overcome gravitational pull i.e. 10N here. force…

Q: Which of the following is true    A. When work is done BY the system, work is denoted as positive,…

A: We know the work done in thermodynamics system is given as, W = PdV The first law of thermodynamics,…

Q: Which of the following statements is true? A Work done by weight is always zero B Work is positive…

A: work is defined as the dot product of force and displacement so it is scalar.work is negative when…

Q: A 8.0kg box slides down a 2.0m long surface that is inclined at 53° below the horizontal. The…

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Q: the following is an example of zero work and which one is an example of negative work?    a) The…

A: Work is done when the force is applied to an object and it causes the object to displace. The work…

Q: Answer: Question 5: Suppose an airplane, Janding on a runway with an initial speed of 45 m/s, slows…

A: These question are based on non uniform velocity but constant acceleration. So we can apply…

Q: Don't use Artificial intelligence tools. Only Handwritten solutions are allowed. Mechanical…

A: This total energy per unit weight includes all the potential energy, kinetic energy, and pressure…

Q: A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and…

A: Given, Mass of bullet m = 7.80 g = 7.80 x 10-3 Kg Initial velocity u = 500 m/s Distance d = 5.60 cm…

Q: If several forces are exerted on a system, calculate the work done by each force, then multiply the…

A: If the several forces are exerted on a system calculate the work done by each force, then multiply…

Q: Calculate the work done from x=0.0 to x = 7.0 m by the one-dimensional force depicted in the…

A: Note:- The area under the force-displacement graph gives the work done.Given- the graph of one…

Q: Data Table Attempts 1st 2nd Weight 118 lbs. Height of stairs 0.08 Time 12.55 sec. 118 lbs. 0.08…

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Q: You lift your 8.4 kg back pack off your bedroom floor and place it on your desk. It your desk is 2.7…

A: Given  mass m = 8.4 kg  displacement = height h = 2.7 m

Q: A 4.20-kg box has an acceleration of 2.10 m/s2 when it is pulled by a horizontal force across a…

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Q: Determine the amount of work done by the applied force when an upward force is applied to lift a…

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Q: Explain in your own words how would you calculate the work done by a variable force if you have the…

A: It is asked to Explain to calculate the work done by a variable force if you have the graph of the…

Q: Explain if it is possible for a system to have negative potential energy

A: Answer Potential energy is the energy stored in any system or object by virtue of its position.…

Q: A box slides down a plank of length d that makes an angle of θ with the horizontal as shown. μk is…

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Q: The Efficiency of a car engine is 25%. The total resistance to motion is 1000 N when the car is…

A: Efficiency = 25% force (F) = 1000 N energy output in 1 liter of petrol = 40 MJ

Q: an example of work kinetic energy expression

A: Work-Energy Theorem: The change in kinetic energy of a body equals the net work performed on it,…

Q: Choose the correct statement a A displacement must cause work A displacement must happen…

A: In physics, work done is defined as the product of the component of force exerted on an object in…

Q: A box of mass 4.0 kg is accelerated from rest across a floor at a rate of 2.0 m/s^2 for 9.0 s . a.)…

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Q: An engine does 7500 J of work in one minute. The power output of the engine is 125 flb/s 0.17 hp 6.0…

A: Work done,(W) by an engine=7500 J -----(1) [Given] Time taken,(t) by an engine=1 min=60 sec -----(2)…

Q: An object is displaced by 0.5m against a force of friction at 2N. What is the work done on the…

A: Given Displacement of the object is d=0.5 m Force of friction on the object is f=2 N   We have to…