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Martin has severe myopia, with a far point on only 17 cm. He wants to get glasses that he'll wear while using his computer whose screen is 65 cm away. What refractive power will these glasses need?
A student tries to raise a chain consisting of three identical links. Each link has a mass of 240 gram. Determine the acceleration of the chain
There are 3 force vectors acting upon a central mass of m = 2.5 kg. What is the magnitude and direction of the acceleration
a box with a side of length L=3.00cm is positioned with one of its corners at the origin of a rectangular coordinante system. What is the electric flux through the bottom of the box
Two traveling sine waves, identical except for a phase difference of phi, What is the phase difference between the two waves
A 61 g red super ball traveling 13 m/s EAST has an elastic collision with a 66 g blue super ball traveling 10 m/s WEST. Discover the final speeds and directions for both of the super balls.
A charge of -3.80 nC and a charge of -6.00 nC are separated by a distance of 60.0 cm. Find out the position at which a third charge of +7.30 nC could be placed so that the net electrostatic force on it is zero.
A yo-yo with a mass of 5 kg is attached to a rope and is swung at constant speed around a vertical circle. what is the length of the rope in meters
The length of a simple pendulum is 0.70 m and the mass of the particle (the "bob") at the end of the cable is 0.24 kg. What is the angular frequency of the motion
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
The Pfund series results from emission/absorption of photons due to transitions of electrons in a hydrogen to/from the n = 5 energy level from/to higher energy levels
q1. two charges are placed on the x axis. one of the charges q1 6.95c is at x1 3.00 cm and the other q2 -27.3c is at
We wish to coat flat glass (n = 1.50) with atransparent material (n = 1.25) so that reflection oflight at wavelength 474 nm is eliminated by interference. What minimum thickness can the coating have to do this
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