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A satellite 589 km above the earth's surface transmits sinusoidal electromagnetic waves of frequency 94.6 MHz uniformly in all directions, with a power of 24.0 kW.
(a) What is the intensity of these waves as they reach a receiver at the surface of the earth directly below the satellite?
(b) What are the amplitudes of the electric and magnetic fields at the receiver?
(c) If the receiver has a totally absorbing panel measuring 17.0 cm by 37.0 cm oriented with its plane perpendicular to the direction the waves travel, what average force do these waves exert on the panel?
Suppose the steel alloy is used for an automobile axle that rotates at an average rotational velocity of 600 revolution per minute (RPM). What is the highest lifetime of continuous driving that are allowable at stress level of 310-MPa.
Calculate the angular velocity of an electron orbiting a proton in the hydrogen atom, given the radius of the orbit is 0.500x10-10 m
A ray of light enter a light fiver at an angle of 15 degreeswith the long axis of fiver. calculate the distance the light raytravels between successive reflections off the sides of the fiber.the fiber has an index of refraction of 1.6 and 10^-4 m ind..
The armature of an ac generator is a rectangular coil, 2.0 cm by 6.0 cm with 80 turns. at what angular speed is the armature rotating
Two particles, each of mass M, are hung between three identical springs. Each spring is massless and has spring constant K. Neglect gravity. The masses are connected as shown to a dashpot of negligible mass.
When it rains, water vapor in the air condenses into liquid water, and energy is released. How much energy is released when 0.0429 m (1.69 inch) of rain falls over an area of 2.59×106 m2
Calculate the temperature at which a tung- sten filament that has an emissivity of 0.25 and a surface area of 6.6×10?5 m2 will radiate energy at the rate of 51Win a roomwhere the temperature is 26?C. The Stefan-Boltzmann constant is 5.6696 × 10?8 W/m..
A 0.43 kg soccerball is kicked with a velocity of 25 m/s at an angle of 37 degrees above the horizontal. What is the kinetic energy at the peak of its trajectory
Find out the drill's angular acceleration. Determine the angle through which the drill rotates all through this period.
A uniform beam of mass M and length L is pinned to the wall and supported in equilibrium by a thin cable attached a distance d from the free end of the beam. Calculate the force exerted by the pin on the beam in vector form
A disk of radius 40cm is spinning at a constant angular velocity of 30radian/s. Find the acceleration of a point on the rim of the disk
A series RLC circuit with R= 45Ohm , L = 270 mH , and C = 4.0 mircoF is connected across a sine-wave generator whose peak output voltage is independent of frequency. Find the minimum frequency of the frequency range over which the peak current will..
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