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An airplane flying at a distance of 45 km from a radio transmitter receives a signal of intensity 50 µW/m2. The transmitter radiates uniformly over a hemisphere.
a) What is the amplitude of the electric component of the signal at the airplane?
b) What is the amplitude of the magnetic component of the signal at the airplane?
c) Compute the transmission power of the transmitter.
A water molecule floating in the air loses one electron, becoming an ion, What is the magnitude of the electric force between the electron and the water ion
A 50 kg rock climber accidentally falls from the side of a rock and freefalls until she is stopped by her 9 m saftey rope. what was the average force felt by the rock climber
A small rocket to gather weather data is launched straight up. Several seconds into the flight, its velocity is 120 m/s, What is the net force on the rocket
Given a binomial distribution with n = 20 and p = 0.76, would the normal distribution provide a reasonable approximation? Why or why not and find the area under the standard normal curve for the following:
a particle beam is made up of many protons each with a kinetic energy of 3.25times10-15j. a proton has a mass of
During basketball parctice Shane made a jump shot, releasing a0.60-kg basketball from his hands at a height of 2.0-m above thefloor with a speed of 7.6 m/s. How much energy was dissipated by air drag
what is the least count of a measurement instrument and how is it related to the number of significant figures of the
Light of 650 nm is incident on two slits. A maximum is seen at an angle of 5.74° and a minimum of 6.46°. What is the order m of the maximum
A person walks first at a constant speed of 4.60 m/s along a straight line from point Ato point B and then back along the line from B toA at a constant speed of 2.90m/s. What is her average speed over the entiretrip?
A parallel-plate capacitor is constructed with circular plates of radius 6.4×10?2 . Find the value of the dielectric constant
1 why are instruments tuned before being played as a group? in which ways do musicians tune their instruments?2 given
a ski gondola is connected to the top of a hill by a steel cable of length 620 m and diameter 1.5 cm. as the gondola
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