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A rock is dropped in a large tank of benzene (n=1.5) and sinks to the bottom of the tank. If the apparent depth of the rock as viewed directly from above is 67 cm, what is the actual depth of the rock?
A small pole (uniform, thin) that has mass 4.05 kg and can pivot about an axis perpendicular to the length of the pole and through its center. What must the length of the rod be
Two crewmen pull a boat through a lock. One crewman pulls with a force of F1 = 130 N at an angle of = 37° relative to the forward direction of the raft.
A cubical box of widths Lx = Ly = Lz = L = 4.82 nm contains eight electrons. What is the energy of the ground state of this system? Assume that the electrons do not interact with one another, and do not neglect spin.
convert normal blood pressure readings of 120 over 80 mm hg to newtons per meter squared using the relationship for
A 480 g ball swings in a vertical circle at the end of a 1.9 m-long string. What is the speed of the ball at that point
the magnetic field perpendicular to a circular coil of 5 turns and diameter 20cm changes from +1.85 T to -.25 T in 30 ms. Find the change in magnetic flux and induced emf
A soot particle, originally neutral, gets charged in a process that removes 27 electrons. Find its resulting charge
A 564 Hz sound wave travels through a substance. What is the speed of sound in the substance
You plan to project an inverted image 30.0 cm to the right of an object. You have a diverging lens with focal length -4.00 cm located 6.20 cm to the right of the object. What is the focal length of the second lens
Consider a uniform thin rod of length 2.00 m and mass 1.00 kg is lying on a smooth horizontal table. How far does the center of mass of the rod travel during the time it takes to make one complete revolution
A cannon has a mass 1000 kg. Its muzzle speed 300 m/s. What will be the speeds of the cannon and ball after firing
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
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