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Q. A satellite in geostationary orbit is used to transmit data via electromagnetic radiation. The satellite is at the height of 35,000km above the surface of the earth, and we assume it has an isotropic power output of 1.00 kW (though, in practice, satellite antennas transmit signals that are less powerful but more directional).
Reception devices pick up the variation in the electric field vector of the electromagnetic wave sent out by the satellite. Given the satellite specifications listed in the problem introduction, what is the amplitude of the electric field vector of the satellite broadcast as measured at the surface of the earth? Use for the permittivity of space and for the speed of light.
State the amplitude of the electric field vector in micro volts per meter to three significant figures.
An electric field of 7.90 x10^5 V/m is desired between two parallel plates, each of area 41 cm2 and separated by 2.45 mm of air. What charge should be on each plate.
A weightlifter has been given a barbell to lift. One end has a mass of 5.05 kg while the other end has a mass of 5.20 kg. The bar is 0.20 m long. (Consider the bar to be massless, and assume that the masses are thin disks, so that their centers of ma..
The centripetal and tangential accelerations are equal
A particle travels counter clockwise around the origin at constant speed in the circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R that lie on the x axis and the y axis..
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts an 8020-N force on the plane, focussed upward at the angle of 55.0° above the horizontal. The plane rises with constant velocity in the vertic..
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
You push with a 20N horizontal force on a 2 kg mass resting on the horizontal surface against a horizontal friction force of 12N. What is the acceleration.
A hiker walks 3.50 km at an angle of 45.0 degrees north of west. After that the hiker walks 1.5 km south. What is the magnitude and direction of hiker's totally displacement.
Find out line linking the two point charges
What is the height of the hill . Find the coefficient of kinetic friction between flight bag and floor.
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 141 N/m. The bullet becomes embedded in the block. If bullet-block system co..
A weather balloon rises by the atmosphere, its volume expanding from 4.4m^3 to 10m^3 as temperature drops from 17 Degrees C to -13Degrees C.
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