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A spring is extended by 30mm when a force of 1.5 N is applied toit. Calculate the energy stored in the spring when hanging vertically supporting a mas of 0.2kg if the spring was unstretchedbefore applying the mas calculate the loss in the potential energyof the mass.
At the time the switch is closed completing a simple LC circuit, the capacitor has 3.4 J of stored energy and the inductor has no stored energy. What is the energy stored in the inductor at that time
An object with a charge of -2.6 \mu C and a mass of1.7×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to itsweight.
A 1.4-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. compute the magnitude of the average resultant force on the ball
An airplane pulls a 24 kg banner on a cable as depicted in the figure below. When the plane has a constant cruising velocity the cable makes an angle of ? = 26°
A ball is thrown straight upward with a velocity of 39m/s. How much time passes before the ball strikes the ground
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.80X106 m/s. Find the centripetal acceleration of the electron
A boy tosses a football upward. If the football rises a vertical distance of 4.1 m and the boy catches it at the same point he released it
Two small metallic spheres, each of mass 0.20g, are suspended as pendulums by light strings from a common point.
Explain in key words what the fundamental difference is between the water circulation in the ocean and in a large and deep freshwater lake (assume that it has the same dimensions as the ocean).
A vector has an x-component of -21.5 units and a y-component of 35.0 units. Find the magnitude and direction of the vector
A 64kg human sprinter can accelerate from rest to 10 m/s in 3.0s . During the same time interval, a 28kg greyhound can go from rest to 20 m/s. What is the average power output of the human
According to a reliable report, in 1795 a member of the Turkish embassy in England shot an arrowto a distance of 441m. calcualte what must have been the minimum initial speed of the arrow
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