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Project Seafarer was an ambitious program to construct an enormous antenna, buried underground on a site about 10000 km2 in area. Its reason was to transmit signals to submarines while they were deeply submerged. Ordinarily, electromagnetic radiations do not penetrate very far into conductors such as seawater. Suppose that the effective wavelength was 3.4*104 Earth radii.
a) What would be the frequency of the radiations emitted?
b) What would be the period of the radiations emitted?
You are making pesto for your pasta and have a cylindrical measuring cup 10.4cm high made of ordinary glass (?=2.7×10?5(C?)?1), At what temperature will the olive oil start to spill out of the cup
A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 13 degree incline. His speed at the bottom is 13 m/s. What is the length of the incline
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
A 9.00-V battery delivers a current of 1.37 A to the lightbulb filament of a pocket flashlight. How many electrons pass through the filament
You throw a 176 g ball straight up to a height of 37.0 m. Calculate the average force exerted by your hand while you are throwing it
three identical electrically charged balls each of mass 2 kg are suspended from a common point with strings of the same
Under certain conditions, the human body cans safely withstand an acceleration of 8 gram. Find what net force would have to act on someone with mass of 60 kilogram to cause this acceleration
A rifle weighs 50.0 Newton and its barrel is 0.750 meter long. It shoots a 25.0 gram bullet, Find the magnitude of the force exerted on the rifle by bullet
The frequency of a mass attached to a spring is 4Hz. At time t = 0, the mass has an initial displacement of 0.200m, When will the mass first reach a turning point
the charges and coordinates of two charged particles held fixed in an xy plane are q1 3.10 ?c x1 4.39 cm y1 -0.0920
question1one 2.9 kg paint bucket is hanging by a massless cord from another 2.9 kg paint bucket also hanging by a
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