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A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.6 m long and the ball's speed is 16 m/s, what is the ball's centripetal acceleration?
1.travelocity would like to estimate the current average domestic airfare. the following data shows the airfares for 24
The mean distance of Mars from the Sun is 1.52 times that of Earth from the Sun. Determine the mass of Earth from the period T
A metallic strain gauge has a resistance of 350 ohms at zero strain. The strain gauge is originally 1-m-long. Determine the resistance (in ohms) of the gauge when is strained axially by 1cm.
A car moving at 15 m/s skids to a stop in 20 m. If the cartravels at 45m/s , how far will skid, assuming the same constantbraking force? Calculate the kinetic energy of the earth as it makes onrevolution around the sun.
A 16 kg girl slides down a playground slide that is 2.8 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. How much energy was dissipated by friction
question1a man pushes a lawn mower on a level lawn with the force of 200n it 40 percent of this force is directed
A small hole of a 2.6 cm diameter has developed in the hull of a ship 4.0 m below the waterline. At what rate is water flowing into the ship
how many days would be required to move one of the charges.
A 2.20- bullet embeds itself in a 1.60- block, which is attached to a spring of force constant 780. Find the time for the bullet-block system to come to rest
A toy rocket engine lifts a mass of 4.5 kg to a height of 15.0 meters. At this height, the rocket is moving at 26.7 m/s. How much work was done by the rocket engine
A flask is filled with 1.51 L (L = liter) of a liquid at 96.8 °C. When the liquid is cooled to 17.5 °C, What is the coefficient of volume expansion of the liquid
Sketch a free body diagram showing the forces acting on the crate and find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.
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