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The currents in household wiring and power lines alternate at a frequency of 60.0 Hz.
(a) What is the wavelength of the EM waves emitted by the wiring?
(b) Compare this wavelength with Earth's radius.
(c) In what part of the EM spectrum are these waves?
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
The 1400-turn coil in a dc motor has an area per turn of 1.1 multiply.gif 10-2 m2. What is the current in the coil
Suppose that you want to take a photograph of yourself as you look at your image in a mirror 3.1m away, For what distance should the camera lens be focused
An electron has an initial velocity of 1.00 ? 106 m/s in a uniform 9.00 ? 105 N/C strength electric field. What is the direction of the electric field
The length of a string is 456 cm. It is held ?xed at each end. The string vibrates in three sections; i.e., the string has three antinodes and string vibrates at 180 Hz.
A 10.0kg stone slides down a snow-covered hill (the figure (Figure 1) ), leaving point A with a speed of 10.0m/s. How far will the stone compress the spring
define How much charge is on each plate.
A hollow conducting sphere has an inner radius of r1 = 0.19 m and an outer radius of r2 = 0.35 m, What is the field E in N/C 1 m from the sphere's outer surface
A particle is launched in a gravitational field (g) with an initial velocity of v nought at an angle of theta with respect to the horizontal, Write down the equations for displacements along x- and along the y- axis as a function of time (t)
A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. What is the dielectric constant of this glass
From the top of a 40.0m high cliff, two rocks are simultaneously thrown. One is thrown upwards at 20.0m/s, the other is thrown downwards at 8.0 m/s. How far apart are the two rocks after 1.5 seconds?
A 5.0 kg sled initially at rest on a level snow-covered road, Find the kinetic energy of the sled after it had been pulled for a distance of 6.0 m
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