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A certain heat engine does 12.0 kJ of work and dissipates 8.00 kJ of waste heat in a cyclical process.
(a) What was the heat input to this engine?
kJ
(b) What was its efficiency?
%
A 0.5 kg lump of clay is moving at 2 m/s in the +x direction of some arbitrarily chosen coordinate system. What is the velocity of the pair after the collision
The intensity I of light from an isotropic point source is determined as a function of distance r from the source. What is the power of the source
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
Someone points out that a ball, if released from rest on a hill, will roll down the hill with increasing momentum. explain the Law of Conservation of Linear Momentum
At point A, 3,00 m from a small source of sound that is emitting uniformly in all directions, the sound level is 53.0 dB. what is the intensity of the sound at point A
A rock climber stands on top of a 53{\rm m} -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0{\rm s} apart, What is the speed of the first stone as it hits the water
Find out the type of mirror and how far the object is
generator has a terminal voltage of 115 V when it delivers 18.0 A, alculate the emf (e m f) and the internal resistance (r) of the generator
Assuming a forward contract was entered into on December 16, illustrate what would be the net impact on Car Corp's 2009 income statement related to this transaction?
When the eye looks at a star (a point of light), diffraction at the pupil spreads the image of the start on the retina into a small disk, What is the linear size of the image of the start on the retina
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.61 m, Calculate the power emitted by the human body
a 100kg person sits 2.0m from the pivot on a seesaw. a second person sits 3m from the pivot on the opposite side. What is this persons mass
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