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The coefficient of kinetic friction between the floor and a suitcase is 0.272. If the suitcase has a mass of 71.5kg, determine how far can it be pushed across the level floor with 642 J of work?
A 140 g air-track glider is attached to a spring. The glider is pushed in 12.00 cm and released. A student with a stopwatch finds that 9 oscillations take 10.0 s.
A futuristic design for a car is to have a large disk -like flywheel within the car storing kinetic energy. find the maximum attainable speed of the car
calculate the Doppler shift (the difference of the observed and emitted frequencies) for light from a car moving toward you at a speed of 210 m/s
At the instant the alpha particle leaves the nucleus, the centers of the two are 7.5 apart and essentially at rest. Find their speeds while they're a great distance apart. Treat each particle as a spherical charge distribution.
the core of an optical fiber has an index of refraction of 1.29 while the index of refraction of the cladding
a proton is fired into a uniform electric field opposite to the direction of the field. the protons speed upon entering
a 100W light bulb connected to a 12.0 V source experiences a voltage surge that produces 14.0V for a moment. By what percentage does its power output increase
A string is wrapped around a disk of mass m = 1.9 kg and radius R = 0.12 m. Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At this instant, how much rotational kinetic energy does the disk..
A small plane can fly at 150 miles/hr. The pilot heads due north toward his home town on the other side of a rectangular lake 600 miles wide. How long does it take the plane to cross the lake
An ideal gas in a container is at a temperature of 70.6°C. What is the average translational kinetic energy of a gas molecule in the container
a 5.0-liter gas tank holds 1.4 moles of helium monatomic and 0.7 moles of oxygen diatomic at a temperature of 260 k.
the 20 g centrifuge at nasas ames research center in mountain view california is a horizontal cylindrical tube 58 ft
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