# Energy ch 11 presentation Slide 4 Reading Quiz 1. After some time, he becomes tired and stops. Slide 9 Example Problems A person lifts a 20 kg box from the ground to a height of 1. Hence the exact result is or Numerically, this quantity is exactly equal to the area between the force curve and the x axis between limits and. Assume one support as redundant 2.

Eth K? Slide 28 Summary Pearson Education, Inc. The component of the force in the direction of motion of p is,and so the work dw done by the force is 21 Ch. A piston compresses the gas, doing 30 J of work. Completely inelastic collision: two bodies stick together.

## Work power and energy ppt

What happens to the energy that is extracted from the steam that is not converted to electricity? The work done by is It is also true for the case in two or three dimensional cases 17 Ch. After some time, he becomes tired and stops. Please relate a point to conservation of momentum a. What is the efficiency of the bulb? This means that, for your body, A. Elastic collision: the total kinetic energy before collision equals the total kinetic energy after the collision. K Echem? Inelastic collision: the total final kinetic energy is less than the total initial kinetic energy. Slide 31 Additional Questions The following pairs of temperatures represent the temperatures of hot and cold reservoirs for heat engines.

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### Energy ch 11 presentation

It is necessary to reduce the rotational speed to 1. The element of work The total work done is f x y o Fig 2. Elastic collision: the total kinetic energy before collision equals the total kinetic energy after the collision. Ug Ug? The object is pulled sideways by a force that is always horizontal, until the string finally makes an angle with the vertical. Slide 5 Reading Quiz 2. K Echem?

One-dimensional situation The smooth curve in Fig shows an arbitrary force F x that acts on a body that moves from to. When the temperature of an ideal gas is increased, which of the following also increases?

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