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Radio waves are electromagnetic waves that travel at a speed of 3.00 108 m/s, the speed of light. An AM radio station has an assigned frequency of 1370 kHz, which means that the radio waves broadcast by the station are at this frequency. Find the wavelength of these radio waves.
Two space ships approach the earth from opposite directions. According to an observer on earth space ship moves at .754c, What is the speed of a observed from b and speed of b observed from a
A puck of mass 0.165 kg, initially resting on ice, is hit by a stick to gain a speed of 32.0 m/s and then slides 25.0 m to lose 5.00% of its kinetic energy. What is the work done on the puck by the stick
A basketball is launched with an initial speed of 9.5 m/s and follows the trajectory shown. The ball enters the basket 1.50 s after it is launched. What are the distances x? Note: The drawing is not to scale.
a consulting group surveyed general mills inc. employees to research the factors that affect their satisfaction with
A beam of light in air strikes a glass slab at normal incidence. The glass slab has an index of refraction of 1.50. find what percentage of the incident light intensity is transmitted
Determine what is the absolute pressure at a depth of 10 meter in a lake, Determine what is the gauge pressure
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
A weather emergency siren is mounted on a tower, 117 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible.
Two identical piano wires have a fundamental frequency of 699 Hertz when kept under the same tension. Find what fractional increase in the tension of one wire
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of vapor in the tank, in kg, and the final pressu..
a rifle has the mass of 4.5 kg and it fires a bullet mass 10.0 at a muzzle speed of 820 m/s. What is the recoil speed as the bullet leaves the gun barrel
State the two rules of Kirchhoff's law. Find the current I1, I2 and I3
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