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A child is playing with a ball on a string. The ball has mass 0.065 kg, the string has radius 1.2 m and assume that the string is massless. The child swings the ball on a string in a vertical circle. Halfway up the circle the speed of the ball is measured to be 8.7 m/s.
What is the maximum tension in the string?
A single chain supports a pulley whose weight is 40 N. Two identical 80-N weights are then connected with a cord that passes over the pulley
The electric field everywhere on the surface of a thin, spherical shell of radius 0.785 m is of magnitude 850 N/C, What is the net charge within the sphere's surface
A 10 N force acts on 5 kg object for 2.0s. What is the impulse of the force on the object, What is the change in momentum of the object
Consider a capacitor created when two identical conducting plates are placed parallel and close to each in other in vacuum, what is the magnitude of the electrostatic force between the charged plates, Is the force attractive or repulsive
Body A in the figure weighs 122 N, and body B weighs 33.5 N. The coefficients of friction between A and the incline are, What is the acceleration of A if A is initially at rest
Two objects attract each other gravitationally with a force of 2.5 x10-10 N while they are 0.33 m apart. Their total mass is 4-kg. Find out their individual masses.
Two trains, each having a speed of s, are headed at each other on the same straight track. what is the total distance the bird travels
a rock is thrown downward from the top of a 40 m tower with an initial speed of 12 m/s. if g-9.8 m/s^2, what is the speed of the rock just before hitting the ground
A compact car has a mass of 1170kg. What will be the car's oscillation frequency while carrying four 84.0kg passengers
A baseball is thrown horizontally at a speed of 43 m/s. When it reaches home plate, what is the horizontal component of its velocity
The pilot of the spaceship measures the length of the moving ship as 30 meters. Establish its length as measured by a person on earth.
A solenoid is made by tightly wrapping a wire 0.30mm in diameter around a 4.0mm diameter cylinder. a) If the inductance of this solenoid is to be 10µH what must the length of the winding be
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