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A 4.0 kg cart slides on a horizontal track and is connected by a light string over a pulley to a hanging 10 kg mass. The coefficients of friction between the cart and track are μk = 0.40 and μs = 0.65. What is the acceleration of the cart?
A small package is fired off Earth's surface with an unknown launchspeed at a 40.0^\circ angle with the localhorizontal. What is the speed of the package when it reaches its maximum height
How does the frequency of harmonic motion change if we take a spring of seven times the modulus, increases or decreases by a factor of how much
Certain insects, such as the water bug, are sufficiently lightweight that they can run on top of water without breaking the surface tension. What is the weight of bug B
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
Illustrate what is the general direction of the airplane's velocity? east of south, north of west,north of east, or west of south?
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
A farm tractor tows a 3700 kilogram trailer up an 18o incline with a steady speed of 3.2 m/s. Determine what force does the tractor exert on the trailer
A good baseball pitcher can throw a baseball toward homeplate at 85mi/h with a spin of 1800rev/min. How many revolutions does the baseball make
Two charges of opposite sign and equal magnitude Q = 2.0 C are held 2.0 m apart. Determine the magnitude and direction of the electric field
q1. a circular loop of radius 11 cm lies in the plane of the paper. a constant magnetic field of 250 mt is directed
At what minimum speed must a roller coaster be traveling when upside down at the top of a circle (Fig. 5-34) if the passengers are not to fall out? Assume a radius of curvature of 9.4 m.
Starting from rest, a 2.2x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
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