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Find the period of a child's leg as it swings about the hip joint. Assume the leg is 0.39 m long and can be treated as a uniform rod.
s
Estimate the child's walking speed.
m
An electric motor rotating a workshop grinding wheel at the rate of 106 rev/min is switched off. Assume the wheel has a stable negative angular acceleration of magnitude 1.50 rad/s2.
The mass of each can be taken to be 37,000 . If the train is accelerating at on a level track, elucidate the tension in the coupling between the second and third cars? The car nearest the locomotive is counted as the first.
An Indy car with a speed of 125km/h goes around a level, circular track with a radius of 1.3km. What is the centripetal acceleration of the car.
Speed of an aircraft at takeoff when launched from a catapult on an aircraft carrier The catapult on an aircraft carrier can take an aircraft from 0 to 207 mph in 9 seconds, at which time the aircraft launches.
In a proton accelerator, the energy of proton is 20MeV, the diameter of the beam is 2.0mm, Find the current density and the particle density in the beam
A ranger in a national park is driving at 41km/h when a deer jumps onto the road 66 m ahead of the vehicle. After a reaction time of t s, ranger applies the brakes to produce an acceleration of -3.20m/s2. What is the maximum reaction time allowed ..
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 2.00 x10-4 m2, and the speed of the water is 0.87m/s as it leaves the faucet.
A baby elephant is fixed in a mud hole. To help pull it out game keepers use a rope to apply a force A as part a. By itself, though, force A is insufficient.
A massless spring with spring constant 22.10 N/m hangs vertically. A body of mass 0.280 kg is attached to its free end and then released. Assume that the spring was unstretched before body was released. How far below the initial position does the ..
The portion of the board on the table measures .30m and the portion of the table measures .20m. Explain how far can the center of the box be over the table before the board begins to tilt?
what will be the induced emf magnitude in the short coil. A 77.9 kg fireman slides down a 4.13 m pole by applying a frictional force of 343 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground.
The roof of the student dining hall at your college would be supported by high cross-braced wooden beams attached in the shape of an upside-down L. Each vertical beam is 10.0 ft high and 2.0 ft wide.
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