Chapter 2: Q.32P (page 45)
A particular AM radio station broadcasts at a frequency of 990kHz. (a) What is the wavelength of this electromagnetic radiation? (b) How much time is required for the radiation to propagate from the broadcasting antenna to a radio 3 km away?
The wavelength of the electromagnetic radiation is 303m.
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Calculate the potential difference along the closed path consisting of two radial segments and two circular segments centred on the charge Q. Show that the four ΔV’s add up to zero. It is helpful to draw electric field vectors at several locations on each path segment to help keep track of signs.
At a certain instant a particle is moving in the direction with momentum. During the next a constant force acts on the particle, with and x. What is the magnitude of the momentum of the particle at the end of this interval?
A spherical satellite of approximately uniform density with radius\(4.8m\)and mass\(205kg\)is originally moving with velocity\(\left\langle {2600,0,0} \right\rangle m/s,\)and is originally rotating with an angular speed\(2rad/s,\)in the direction shown in the diagram. A small piece of space junk of mass\(4.1kg\)is initially moving toward the satellite with velocity\(\left\langle { - 2200,0,0} \right\rangle m/s.\)The space junk hits the edge of the satellite at location C as shown in Figure 11.97, and moves off with a new velocity\(\left\langle { - 1300,480,0} \right\rangle m/s.\)Both before and after the collision, the rotation of the space junk is negligible.
Question: An electron passes location , and later is detected at location , (1 microsecond is). a) What is the average velocity of the electron? b) If the electron continues to travel at this average velocity, where will it be in another ?
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