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If the received power at a reference distance d0 = 1 km is equal to 1 microwatt, find the received powers at distances of 2 km, 5 km, 10 km, and 20 km from the same transmitter for the following path loss models:
a. Free space;
b. º = 3;
c. º = 4;
d. two-ray ground reflection using the exact and approximate expressions; and
e. Hata model for a large city environment
an electron that has a velocity withxcomponent 2.9 x 106 ms andycomponent 3.7 x 106 ms moves through a uniform magnetic
A skier with a mass of 66kg starts from rest and skis down an icy (frictionless) slope that has th elength of 57 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, path levels out and becomes horizontal, the snow beco..
The intensity of an earthquake wave passing through the Earth is measured to be 2.5×106 at a distance of 55 from the source. At what rate did energy pass through an area of 3.0 at 1.0
A 4.00 kg hollow sphere of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the hollow sphere at the bottom of the incline is:
A 200-N beam is held horizontally by a vertical steel cable at each end. The beam is 18 m long. A 650-N box sits 3.0 m from the left end. What is the tension in the right cable
A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below. The tension in the wire is adjusted to have a magnitude of 21.1 N. Find the magnitude of the net force exerted by the wire on the crooked tooth.
in a diesel engine the piston compresses air at310k to a volume that is0.0629of the original volume and a pressure that
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
A uniform thin rod of length 0.7 m and mass 3.0 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
upon what properties of the sound wave do the a loudness b pitch and c quality of a musical note depend? why do the
They are each sitting on a beach ball that is just submerged beneath the water (see the figure). Ignoring the weight of the air in each ball, and the volumes of their legs that are under the water, find (a) the radius of father's ball and (b) the ..
An electron that has a horizontal initial speed of 4.50 x 106 m/s enters a region that has an electric field of 120V/m pointing vertically upward. find what is the vertical displacement of the electron
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