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The spring in a clothespin is compressed 0.40 cm, storing energy in the form of spring potential energy. If the spring is compressed twice as far, the spring potential energy increases with 0.0046 J. What is the force constant, k, for this spring?
Mounted on a low mass rod of length 0.44 m are four balls. Two balls each of mass 0.89kg, are mounted at opposite ends of the rod. Two other balls, What is the angular speed of the rotating device
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
Rank the vector combinations on the basis of their angle, measured counter clockwise from the positive x axis. Vectors parallel to the positive x axis have the angle of 0. All angle measures fall between 0 and 360.
if a neutral metal sphere is connected to ground through a wire when a positively charged glass rod comes close to the
A boat moves through the water of a river at 9 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.9 m/s, how long does it take the boat to make a round trip consisting of a 225 m displacement d..
a stream is 30m wide and its current is 1.5 m/s south. how far down the stream will the current push the boat
A capacitor consists of two parallel plates, each with an area of 14.0 cm^2, separated by a distance of 0.150 cm. How much energy is stored in the charged capacitor
A 4 kg mass is connected to a spring (k = 730 N/m) platform which undergoes simple harmonic motion in the vertical direction. The amplitude of the oscillation is 5 cm. At t=0 the box is 5 cm above the equilibrium position.
A thin spherical shell has a radius of 2.1 m and a mass of 360 kg, and its center is located at the origin of a coordinate system. What is the gravitational force of attraction between the two shells
Yet another bizarre baton is created by taking four identical balls, each with mass 0.346 kg, and fixing them as before except that one of the rods has a length of 1.02 m, Calculate the moment of inertia of this baton when oriented
A 9 V battery is rated at 80 Ah. It can deliver a current of 80 A for one hour, or a current of 40 A for 2 hours, etc. What is the total energy stored in the battery
A man runs at a velocity of 4.5 m/s frao 15.0 min. When going up an increasingly steep hill, How far did he run
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