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7.0 kg object undergoes an acceleration of 2.5 m/s2.
1. What is the magnitude of the resultant force acting on it?
2. If this same force is applied to a 14.0 kg object, what acceleration is produced?
The orbits of synchronous communications satellites have been chosen so that viewed from Earth they appear to be stationary. Find the radius of the orbits
A softball having a mass of 0.255 kg is pitched at 92.3 km/hr. By the time it reaches the plate, estimate the average force of air resistance during a pitch
A straight wire segment 2 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force on the wire
What is the magnitude of the acceleration of a falling sky diver (mass 62.5kg including parachute) who has opened her parachute
A block of mass m is attached to a string that is wrapped around the circumference of a wheel of radius R and moment of inertia I. Find the moment of inertia of the wheel if its radius is 8.0 cm
The 6.275 kg sledge hammer shown on the right has a small hole drilled at point "P" and a metal rod is inserted to act as a low-friction pivot. When the hammer is displaced slightly and allowed to swing from the pivot, its period of oscillation is ..
While bungee jumping, the free fall is 15m/s downward. At thatpoint the cord begins to stretch, and slows the jumper to a stop asit stretches, What is the distance at the moment of turn around
A cyclist has a speed of 5.0 m/s when she begins to coast down a hill, Calculate the work done by gravity on the cyclist
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
As a 1.00 cm diameter plunger reduces the height of the column of air inside the chamber from 7.00cm down to 0.50cm, Determine the air pressure inside the chamber after compression
Two cylindrical rods, one copper and the other iron, are identical in lengths and cross-sectional areas. What is the voltage between the ends of the copper rod
A helicopter has blades of length 4.0 m, rotating at 1.0 rev/s about a central hub, find the emf induced between the blade tip and the central hub
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