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Two solid metal balls are placed in contact with each other. The first ball is made of a material twice as dense as the second ball; the first ball has a radius of 1, the second has a radius of 3. The gravitational force between them is F1. The balls are somehow enlarged so that they gain mass proportional to their respective densities (density is conserved) and ball one's radius is twice as large as it was and ball two's radius is five times as large as it was. What is the new force relative to F1?
A man stands in the middle of a boat, which is 4.1 m long and has a mass of 75 kg. The end of the boat that is closest to land is 2.7 m from the shore. What is the mass of the man
A light rod of length 1.8 m has two point masses of mass 2 kg attached at either end. If the spring constant is 3.7 Nm.rad-1, what is the period of the resulting motion
Find the gauge pressure at a second point in the line 10.6m lower than the first if the pipe diameter at the second point is twice that at the first
An electron in the hydrogen atom is in an excited state given by (n=4, l=3, ml=2, ms=1/2). List the possible final states the system could be in after the emission of photon. Include in the list the energies of the photon.
Find the force on the electron in the hydrogen molecule ion for which the potential is represented by the follwoing. V= (-e^2/r1)+(-e^2/r2)
A guitar string is 90.0cm long and has a mass of 3.17 g. From the bridge to the support post (=l) is 60.0cm, What are the frequencies of the fundamental and first two overtones
A flywheel of mass 182 kilogram has an effective radius of 0.62 meter, Determine the applied torque on the flywheel
What is the coefficient of static friction
The electric field midway between two equal but opposite point charges is 735 N/C, and the distance between the charges is 19.7 cm. What is the magnitude of the charge on each
A rod 50 cm long and 1.0 cm in radius carries a 2.0 microC charge distributed uniformly over its length. Find the approximate magnitude of the electric field
A 1590 kg car has just passed a diner. The closest the car came to the diner was R = 12.5 m, find the current magnitude of the angular momentum of the car about ther dinner
One solenoid is centered inside another. The outer one has a length of 46.0cm and contains 6600 coils, Find the emf induced in the inner solenoid
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