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In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.4 kg {\rm kg} sphere. Students determine the frequencies of standing waves on the horizontal segment of the string, then they raise a beaker of water until the hanging 1.4 kg {\rm kg} sphere is completely submerged. The frequency of the fifth harmonic with the sphere submerged exactly matches the frequency of the third harmonic before the sphere was submerged.
What is the diameter of the sphere?
Draw a picture of a polarized and unpolarized E-field (go ahead and just do it at one point in space using an arrow(s)). Polarized means that the E-field oscillates perpendicularly at a fixed orientation relative to the direction of propagation.
There are four charges, each with a magnitude of 1.8 μC.Two are positive and two are negative. The charges are fixedat corners of a 0.25 m square, one to a corner, in such a way thatthe net force on any charge is directed toward the center of thes..
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. find the speed of the stream of water leaving the hose
A 150 g block of ice at 0 C is dropped into 350 g of water at 25 C, compute the final equilibrium temperature
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.78 cm. What is the power of the implanted lens
1. a merry-go-round spins without friction. the merry-go-round is a circular disk of mass m and radius r and that it is
Pat (mass 53 kg) and Chris (mass 72 kg) sit in a 26-kg kayak at rest on frictionless water. What's the kayak's speed after Chris catches the pack
A girl delivering newspapers travels 2 blocks west, 2 blocks north, and then 5 blocks east. What is her resultant displacement
A 25.0microF capacitor is charged to a potential difference of 800V. The terminals of the charged capacitor are then connected to those of an uncharged 8.00microF capacitor. Compute the original charge of the system
An electron is released to accelerate from point 1 to point 2 in a potential region. The electric potentials at these points are V1 = -35 V and V2 = +200 V. Calculate the change in potential energy of this electron
An asteroid has been discovered revolving around the sun on a circular orbit with radius 4.2 times of the Earth's orbit around the SUN ( about 149.6 million km ). Knowing that it takes the Earth 1 year to complete a revolution, how may years does it ..
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
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