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A rubber ball is dropped from a distance of 1.40 m above ground and bounces to 60% of its original height. If the average force exerted on the ball is ten times its weight, how long is the ball in contact with the ground?
Assume a rocketship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight. Estimate the time required by a rocketship to attain the speed of light and the distance travelled t..
An electron and a 140-g baseball are each traveling110m/s measured to a precision of 0.055%. Calculate the uncertainty in position of the electron
An x-ray beam (25 MeV) strikes a proton at rest and scatters the x-rays through an angle of 100 degrees. What is the wavelength of the scattered x-rays
A swimming pool has dimensions 36.0 m 8.0 m and a flat bottom. When the pool is filled to a depth of 1.90 m with fresh water, what is the force caused by the water on the bottom
What is the speed of the arrow as it leaves the bow.Two point charges, Q_1 = -6.9 mu C and Q_2 = 2.0 mu C are located between 2 oppositely charged parallel plates.
Define the carrier power, total power and sideband power in the AM signal.
A charge of 3.80 10-6 C is placed on a small conducting sphere that is located at the end of thin insulating rod whose length is 0.22 m. The rod rotates with an angular speed of ω = 156 rad/s about an axis that passes perpendicularly through its o..
A student pushes a loaded sled whose mass m is 240kg for a distance d of 2.3m over the frictionless surface of a forzen lake. if the sled starts from rest, what is its final velocity
Consider an LC circuit in which L = 470 mH and C = 0.102 µF. What is the resonance frequency and If a resistance of 1.30 k? is introduced into this circuit, what is the frequency of the damped oscillations
A tennis ball gun launches tennis balls at 17.6 m/s . It's pointed straight up and launches one ball; 2.0 s later, What is the second balls' velocity at that point
question1three identical 3.60 masses are hung by three identical springs. each spring has a force constant of 4.90 and
q. a small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless horizontal
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