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Two parallel wires are 4.85 cm apart and carry currents in opposite directions, as shown in the following figure. Find the magnitude and direction of the magnetic field at point P due to two 1.45-mm segments of wire (dl) that are opposite each other and each 8.00 cm from P. (Let dl = 1.45 mm.)
The loaded cab of an elevator has a mass of 1.7 x 103 kg and moves 239 m up the shaft in 19 s at constant speed. At what average rate does the force from the cable do work on the cab.
A skier slides horizontally along the snow for a distance of 28 meter before coming to rest. determine how fast was the skier going
A solid, horizontal cylinder of mass 10.5 kg and radius 1.14 m rotates with an angular speed of 7.23 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
Assume that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision.
A charged particle of mass m and charge q is suspended from a light thread in a region of space where there is a uniform horizontal electric field. find the angle between the thread and a vertical line
Assume that you wish to fabricate a uniform wire out of 0.850 gram of copper. Suppose the wire has a resistance R = 0.500 Ω, and all of the copper is used. Find what will be the length of the wire
A steel cylinder of mass 4 kg contains 4 L of liquid water at 25 C degree at 100 kPa. Find the total mass and volume of the system
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
A space ship travelling at speed 0.5c toward the earth ejects a spacepod travelling in a forward direction at a speed of 0.25c, what is the speed of light signal relative to the spaceship in term of c
A pendulum has a length L = 1.11m. It hangs straight down in a jet plane about to take off as shown by the dotted line, Calculate the magnitude of the plane's acceleration
A material has an index of refraction of 1.980. What is the critical angle for internal reflection inside a block of this material that is in air
when the nuclear reactor accident occurred at chernobyl in 1986 2.0times107ci were released into the
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