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A thin rod of length L and negligible mass can pivot about oneend to rotate in a vertical circle. A heavy ball of mass m isattached to the other end. The rod is pulled aside through anangle A and released. As the ball descends to its lowestpoint,
a.) how much work does its weight do on it and
b.) what is the change in the gravitational potential energyof the ball-Earth system?
c.) If the gravitational potential energy is taken to be zeroat the lowest point, what is its value just as the ball isreleased?
An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the?
A 1000N force stretches a wire by 4.0mm . A:A second wire of the same material is twice as long and has twice the diameter. How much force is needed to stretch it by 1.0 mm? B:A third wire of the same material is twice as long as the first and has..
A 12- V battery causes a current of 0.40A through a resistor. A) what is its resistance B) how may joules of energy does the battery lose in minutes.
A 98 ? resistor is connected in series with a 177 mH inductor and a 1.4 ?F capacitor. Find the effective voltage Vrms across the capacitor
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 2.85 multiplied by 10-4 m3, What mass of gold is contained in the rock
As viewed from above, a fireworks box with mass m = 6.0 kg slides with speed v = 3.0 m/s across a frictionless floor in the positive x direction. What is the speed of the second piece
A motorcyclist is traveling along a road. He sees another cyclist ahead and starts to accelerate for 5 seconds to pass him. What is the angular displacement of the wheels
A person drives a car around a circular cloverleaf with a radius of 64 m at a uniform speed of 10 m/s. What is the acceleration of the car
A reflecting, spherical Christmas tree ornament has a diameter of 6.0 cm. Where is the image located
find speed at which the ball left the quarterback's hand.
In order to drink from your glass you must first need to lift it to your mouth. As you begin to lift your 0.20kg glass of water it is accelerating upwards at 0.090 ms-2. What is the net force acting on the glass
Red laser light of 630 nm is incident upon a diffraction grating. determine the angle from the incident ray of the first diffracted ray
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