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If a ratio of 7 is equal to 8.5 dB and a ratio of 8 is equal to 9 dB, express a ratio of 56 in dB. An early station has a 100W transmitter, and an antenna gain of 2000 (values are not in dB). Calculate the earth station EIRP (in dBW). A 7.5m antenna has an efficiency of 55%. What is the antenna gain in dBi at 6 GHz?
A 500kg car traveling due east at 54.0km/h collides head on with a 3000kg van moving at 18.0km/h. calculate the velocity of the combined mass
An object of mass M = 2.00 kg is attached to a spring withspring constant k = 88.0 N/m whose unstretched lengthis L = 0.100 m, and whose far end is fixedto a shaft that is rotating with an angular speed of omega = 2.00 radians/s
Four 1.2 kg masses are located at thec orners of a square 0.80 m on eachside. Find the magnitude and direction of the gravitational forceon a fifth 1.2 kg mass placed at the midpoint of the bottom side of the square.
A 300 pound man is submerged in water, and his submerged weight is approximately 120 pounds. What is the volume of this individual
A charge of 4.10*10-6 C is placed on a small conducting sphere that is located at the end of a thin insulating rod whose length is 0.22 m. The rod rotates with an angular speed of ω = 148 rad/s about an axis that passes perpendicularly during its oth..
A disabled tanker leaks kerosene (n = 1.20) into thePersian Gulf, creating a large slick on top of the water(n = 1.30). (a) If you are looking straight down from an airplane, while the Sun is overhead, what is the thickness at a region of the slic..
two shuffleboard disks of equal mass one orange and the other yellow are involved in a perfectly elastic glancing
Suppose you make a new kind of compact disk that is the same thickness as a current disk but twice the diameter
a golf club strikes a 0.059 kg golf ball in order to launch it from the tee. For simplicity assume that the average net force applied to the ball acts parallel to the ball's motion, With what speed does the ball leave the club
As you walk to class with a constant speed of 1.95 m/s, you are moving in a direction that is 20.5 degrees north of east. How much time does it take to change your displacement
Meteorologists define the temperature lapse rate to be -dT /dz where T is the air temperature in Celsius at altitude z kilometers above the ground.
A 175.0 lb hiker is able to ascend a 1,980 ft high slope in 1 hour and 45 minutes (a) How much work did the hiker do? (b) What was the average power output in hp?
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