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FM station KCOM transmits simultaneously, at a frequency of 99.9 MHz, from two broadcast towers placed precisely 31.5 m apart along a north-south line.
a. What is the wavelength of KCOM's transmissions?
b. Suppose you stand 90.0 m due east of the point halfway between the two towers with your portable FM radio. Will you receive a strong or weak signal at this position? Why?
c. You then stand 90.0 m due north of the northern tower with your radio. Will you receive a strong or weak signal at this position? Why
The current from an AC source is given by: I(t) = 6.50 sin(84.0 t + 1.090 ) mA, What would the phase shift be in degrees
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The temperature near the top of Saturn's cloud layer is about 110K. The temperature at the top of earth's troposphere, at an altitude of about 20km, is about 220K. Calculate the rms speed of hydrogen molecules in both these environments
A block is sliding to the right up a inclined plane (10 degrees) at an initial speed of 0.5 m/s. The coeffecient of friction is 0.3. how large must the minimum coefficient of static friction be
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Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
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A force of 21.0 N is required to start a 2.8 kg box moving across a horizontal concrete floor. What is the coefficient of static friction between the box and the floor
A metal guitar string has a linear mass density of ? = 3.20 g/m. What is the speed of transverse waves on this string when its tension is 80.0 N
A 33.2 m steel wire and a 25.6 m copper wire both with 1.00 mm diameters, are connected end to end and are stretched to a tension of 120 N. How long does it take the transverse wave to travel the entire length of the two wires.
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