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A playground merry-go-round of radius R = 1.80 meter has a moment of inertia I = 240 kg•m2 and is rotating at 8.0 rpm about a frictionless vertical axle. Facing the axle, a 25 kilogram child hops onto the merry-go-round and manages to sit down on its edge. Find the new angular speed of the merry-go-round?
_______ rpm
A typical lightbulb in your house is rated 200 W, which means that the bulb dissipates 200 W when connected to a DC voltage of 110 V. What is the current through the lightbulb
In a swimming race, a father gives his 4 year old son a 10 s head start. The pool is 25 m long. Find at what time does the father come alongside his son
Consider a simple pendulum with L = 2.4 m and m = 1.8 kg. Suppose the mass is initially at rest at the lowest point on its trajectory when it is given an impulse such that it then has a velocity of 0.17 m/s. What is the total mechanical energy of the..
For charging process, the voltage across the capacitor as a function of time is given by Vc = ε[1-exp(-t/τ)]. When the time is twice the time constant, find what percentage of the maximum voltage is on the capacitor
If wavelength is 5890 , and slits width is 0.25 mm, find its angular separation between central maxima
Consider the arrangement shown in the figure below. Assume R = 4.00 ? and scripted l = 1.40 m, At what speed should the bar be moved
An electric field of 350000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -9.9C at this spot?
A cart with mass 220 g moving on a frictionless linear air track at an initial speed of 1.0 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is the mass of the second cart
Consider two concentric thin wall steel tubes, the larger one closed at the bottom and the inner one open. What must be the relationship between the radii of the tubes
an electric field of 210000 nc points due west at a certain spot. what is the magnitude of the force that acts on a
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A vector has an x-component of ?21.0units and a y-component of 50.0 units. Find the magnitude and direction of the vector
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