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Question: A new cordless phone emits 2.9mW at 5.8 GHz. The manufacturer claims that the phone has a range of 100 feet.
Part A: If we assume that the wave spreads out evenly with no obstructions, what is the electric field strength at the base unit 100 feet from the phone?
Show all work, use additional paper if necessary.
it is believed that a large electric fish known as torpedo occidentalis uses electricity to shock its victims. a
On a workday the average decibel level of a busy street is 78 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
A 1.2 kg block is held at rest against a spring with a forceconstant k=730 N/m. Intially the spring is compressed a distanced. When the block is released, it slides across a surfacethat is frictionless except for a rough patch of width 5.0 cm that..
Air that initially occupies 0.16 m3 at a gaugepressure of 100 kPa is expanded isothermally to a pressure of 101.3kPa and then cooled at constant pressure until it reaches itsinitial volume. Compute the work done by the air
An extremely dense neutron with mass equal to that of the sun has a radius of about 10 km about the size of Manhattan Island. These stars are thought to rotate once about every 0.03 to 4 s, depending on their size and mass.
Three charges, q1=2.0x10^-8 C, q2= -3.0x10^-8 C, and q3= -4.0x10^-8 C, are located on the y-axis, Find the resultant force exerted on the third charge q3 by the other two charges
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. Determine the initial speed of the shell
A soccer player kicks a ball that is on the ground down the field. The balls initial velocity is 10 m/s, 30 degrees above the horizontal. How long does is take for the ball to land down the field
A uniform, solid metal disk of mass 6.50kg and diameter 24.0 cmhangs in a horizontal plane, supported at its center by a verticalmetal wire. You find that it requires a horizontal force of 4.23 Ntangent to the rim of the disk to turn it by 3.34 degre..
A block of mass 0.6 kg is moving up a 40 degree inclined plane at a speed of 2 m/s. how far up the plane will the block go before stopping
A circular hoop of radius 75 cm is hung on a narrow horizontal rod and allowed to swing in the plane of the hoop. What is the period of its oscillation, assuming that the amplitude is small?
Two Automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision, What was the speed of car B before the collision
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