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A 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 73.0 N and is directed at an angle of 22 ° above the horizontal. Determine the coefficient of kinetic friction.
Two identical diverging lenses are separated by 18 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
Consider two unknown point charges, Q1( on the left) and Q2 are separated by a distance, o.981m. Find the ratio Q2/Q1 in both magnitude and sign
An unknown substance has a mass of 0.125 kg and an initialtemperature of 95.0°C. calculate the specific heat of the unknown substance
A 72.0-kg log falls from a height of 20.0 m into a lake. find the change in entropy of the air during this process
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 58.05 diopters, How far is the blackboard from her eyes
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. compute the magnitude of the frictional force exerted on the ladder
A 13,900 kg truck is moving at 23.5 m/s on a mountain road when the brakes are applied. What is the truck's original kinetic energy
A uniform chain with a mass of 1.23 kg per meter of length is coiled on a table. One end is pulled upward at a constant rate of 0.523 m/s. Calculate the net force acting on the chain
A 15 pF capacitor is charged to 1 kV and then removed from the battery and connected in parallel to an uncharged 65 pF capacitor, Find the change in energy
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops that have a typical radius of 10µm. For that range, give the lower value and the higher value, respectively, for the following.
A portable CD player does not have a power rating listed, but it has a label stating that it draws a maximum current of 231.0 mA. What is the maximum power consumed
An 80 g, 35 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 g ball of clay travelling horizontally at 2.50 m/s hits and sticks to the very bottom tip of the rod.
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