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The radar system at an airport broadcasts 11 GHz microwaves with 150 kW of power. An approaching airplane with a 35 m2 cross section is 36 kilometer away. Suppose that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all directions.
Find the electric field strength of the microwave signal received back at the airport 240 micro seconds later?
A small ball is attached to one end of a spring that has an unstrained length of 0.179 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down
The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What does it weigh on the moon
An airplane propeller is 2.58 meter in length (from tip to tip) and has a mass of 122 kilogram. Compute the angular acceleration of the propeller
Charge of -3.30 nC and a charge of -6.25 nC are separated by a distance of 40.0 cm. Find out the position at which a third charge of +7.60 nC can be placed so that the net electrostatic force on it is zero.
An accelerating voltage of 2415 V is applied to an electron gun, What are the magnitude and direction of the deflection on the screen caused by the Earth's gravitational field
Aconductor is formed into a loop that encloses an area of 2 m2. what is the maximum rate at which the magnetic field strength is changing
two positive point charges each 16 uc lie along the x-axis at x -0.12m and x 0.12m.a. find the electric field at the
A 1.5 kilogram block is at rest on a horizontal frictionless surface. The block is attached to a spring that is itself fixed to the wall. Determine what was the initial speed of the bullet
The work done by an external force to move a -8.90charge from point a to point b is 1.80×10?3 . If the charge was started from rest and had 4.87×10^4 of kinetic energy when it reached point b, what must be the potential difference between a and b?
A straight wire having a length of 14.0 m is bent to form a square. If the wire carries a current of 20.0 A, what is the magnitude of the magnetic field at the center of the square
A small omnidirectional stereo speaker produces waves in all directions that have an intensity of 8.50W/m2 at a distance of 4.00m from the speaker. At what rate does this speaker produce energy
When a resistor is connected across the terminals of an acgenerator (107 V) that has a fixedfrequency, there is a current of 0.495 Ain the resistor. When an inductor is connected across the terminals of this same generator, there is a current of 0..
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