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An engine with an output of 267.0 W has an efficiency of 39.0 %. It works at 9.00 cycles/s. How much work is done in each cycle? How much heat is rejected each cycle?
A jet plane at take-off can produce sound of intensity 9.20 W/m^2 at 30.2 m away. What power of sound does the jet produce at take-off
question1a 59-kg person on skis starts from rest down a hill sloped at 36deg from horizontal. the coefficient of
One mole of helium atoms has a mass of 4 grams. If a helium atom in a balloon has a kinetic energy of 1.224e-21 J, what is the speed of the helium atom
A dockworker applies a constant horizontal force of 89.0N to a block of ice on a smooth horizontal floor
Displacement is which of the following types of quantities.
In a mass spectrometer, a singly charged ion having a particular velocity is selected by using a magnetic field of 0.10 T , What is the mass of the ion
When a portable fan is first turned on it draws 4.62 A. After it has come up to speed it draws 0.55 A. calculate the back emf while the motor is running
Ilustrate what is the magnitude of the torque about his shoulder if he holds his arm in each of the following ways? Straight out to his side, parallel to the floor.
If you place an electric charge in an electric field it will feel a force due to the electric field, Describe the direction of the force
questionan elevator of mass 2268 kg rest at a level of 7.62 m above a base of elevator shaft. it is raised to 76.2 m
What is the distance Delta y_max-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of central maximum.
a sinusoidal transverse wave moves along a stretched string in the +j direction with amplitude 5 cm, wavelength 2 m, and wave speed 200 m/s. How much average power is transmitted along the string
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