GO A Carnot engine is set up to produce a certain work W per cycle. In each cycle, energy in the form of heat Q H is transferred to the working substance of the engine from the higher-temperature thermal reservoir, which is at an adjustable temperature T H . The lower-temperature thermal reservoir is maintained at temperature T L = 250 K. Figure 20-28 gives Q H for a range of T H . The scale of the vertical axis is set by Q H s = 6.0 kJ. If T H is set at 550 K, what is Q H ? Figure 20-28 Problem 32.
GO A Carnot engine is set up to produce a certain work W per cycle. In each cycle, energy in the form of heat Q H is transferred to the working substance of the engine from the higher-temperature thermal reservoir, which is at an adjustable temperature T H . The lower-temperature thermal reservoir is maintained at temperature T L = 250 K. Figure 20-28 gives Q H for a range of T H . The scale of the vertical axis is set by Q H s = 6.0 kJ. If T H is set at 550 K, what is Q H ? Figure 20-28 Problem 32.
GO A Carnot engine is set up to produce a certain work W per cycle. In each cycle, energy in the form of heat QH is transferred to the working substance of the engine from the higher-temperature thermal reservoir, which is at an adjustable temperature TH. The lower-temperature thermal reservoir is maintained at temperature TL = 250 K. Figure 20-28 gives QH for a range of TH. The scale of the vertical axis is set by QHs= 6.0 kJ. If TH is set at 550 K, what is QH?
A 31.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 29.0° with the vertical.
(a) Neglecting friction, find the child's speed at the lowest position.
m/s
(b) If the actual speed of the child at the lowest position is 2.40 m/s, what is the mechanical energy lost due to friction?
]
A 3.5-kg block is pushed 2.9 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 0 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following.
(a) the work done by F
J
(b) the work done by the force of gravity
]
(c) the work done by the normal force between block and wall
J
(d) By how much does the gravitational potential energy increase during the block's motion?
]
Human Physiology: An Integrated Approach (8th Edition)
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The Second Law of Thermodynamics: Heat Flow, Entropy, and Microstates; Author: Professor Dave Explains;https://www.youtube.com/watch?v=MrwW4w2nAMc;License: Standard YouTube License, CC-BY