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Two equally charged insulating balls each weigh 0.22 g and hang from a common point by identical threads 25 cm long. The balls repel each other so that the separation among their centers is 6.0 cm. What is the magnitude of the charge on each ball?
an electron is initially at rest just outside a large copper surface that has a charge density of 1.03 x 10-6 cm2. how
a model rocket is fired straight up from ground level with a constant acceleration of 50ms-2 until the engine runs out
An artificial satellite circles Earth in a circular orbit at allocation where the acceleration due to gravity is 9.00m/s2. Decide the orbital period of the satellite.
An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel as shown in the figure below. The flywheel is a solid disk with a mass of 80.5 kg and a radius R = 0.625..
Two converging lenses, separated by a distance of 40.5 cm, are used in combination. The first lens, located to the left, has a focal length of 15.7 cm. Find the intermediate image distance relative to the corresponding lenses
In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.9kg sphere, What is the diameter of the sphere
A mover places a 65 kg crate on a ramp by a slope if 25 above the horizontal. With what horizontal force should the mover push on the carte so that it stays in place? Suppose no friction.
An object weighs 100 N in air. It weighs 75 N in waterand 85 N in oil. What is the density of the objet
A block slides down a frictionless plane having an inclination of θ = 19.1 °. Find its speed when it reaches the bottom of the incline
What is the beat frequency in Hz. A force of magnitude P pushes the block forward and downward as shown in the figure below. suppose the force is applied at an angle of 24.0° below the horizontal.
The middle C string on a piano is under a tension of 900 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
An unstable particle with a mass equal to 3.34 multiplied by 10-27 kg is initially at rest. Find the masses of the fragments
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