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A 1000 kg car is traveling at a constant speed of 30 m/s
a. How much energy is transferred to internal energy as the car comes to rest?
b. If the car stops in 100 meters, what is the average force applied to the car?
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg•m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N. Find out the effe..
A frictionless pulley has the shape of a uniform solid disk of mass 6.00 and radius 28.0 . A 2.70stone is attached to a very light wire that is wrapped around the rim of the pulley(Figure 1) , and the stone is released from rest. As it falls down,..
In the reference frame of the laboratory, a particle moves in the x-y plane with a velocity of 0.7c at an angle of 40 degrees with the x-axis. Find the velocity (magnitude and direction) of this particle
Two 100 N forces pull on a 50kg mass. One of the forces pulls to the right and the other pulls 90 degrees from the first force. What is the net acceleration of the mass
A stone thrown horizontally from a height of 6.22 m hits the ground at a distance of 14.30 m. find the speed of the stone as it hits the ground
A Hollywood daredevil plans to jump the canyon shown in the figure on a motorcycle, what is the correct angle for his launch ramp (deg) and What is his correct launch speed
The output voltage of an AC generator is given by ?v = (190 V) sin (70?t). The generator is connected across a 12.0-? resistor. Find the power delivered to the resistor
The planes of atoms in a cubic crystal lie parallel to the surface, 0.74 nm apart. X rays having wavelength 0.40 nm are directed at an angle theta to the surface.
How fast is an ion of deuterium moving, assuming rms speed, if it is in a plasma with a temperature of 100 x 106 K? (kB = 1.38 x 10-23 J/K and mD = 2 x 1.66 x 10-27 kg)
A spring is hung from the ceiling. A 0.375 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
The emissivity of her skin is 0.750 and its surface area is 1.30 m2. How much time would it take for her to emit a net radiant energy from her body that is equal to energy contained in this dessert.
The figure shows the light intensity on a screen behind a double slit. The slit spacing is 0.20 mm, What is the distance from the slits to the screen
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