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the electromagnetic wave that delivers a cellular phone call to a car has a electric field with an rms value of 4.5e10^-2. the wave passes perpendicularly through an open window, the area of which is 0.15 m^2.
a) what is the intensity of the wave generated by this phone call?
b) how much energy does this wave carry through the window during a 1 minute phone call?
A cannon ball is shot straight upward with a velocity of 77.50 m/s. What is the maximum height attained by the cannon ball
The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 5.0 Wb from 14.0 Wb in a time of 0.020 s. What is the resistance of the wire
a cylindrical can 8.00cm outside diameter and 20cm high floats upright in the water. how high will the water rise
How much force does a 150,000 N/C force exert on a deuteron.
An 91 kg man climbs a 981 m high mountain in 1.01 hour and uses 7.6 kcal/min, Determine the power consumption in watts.
At a soft drink bottling plant, a horizontal section of pipe carrying citric acid in liquid form goes from a cross-sectional area of 8.00 cm2, determine the liquid flow speed and the liquid pressure
The vector shows the weight of the stone. Complete the vector diagram showing another vector that results in zero net force on the stone. Illustrate what is the conventional name of the vector you have drawn?
when 105 mL of water at 22 C is mixed with 68mL of water at 95 C, what is the final temperature? suppose no heat is lost to the surroundings and density of water is 1 g/mL.
A weight (with a mass of 90 kg) is suspended from the point near the right-hand end of a uniform boom with a mass of 71kg. To support the uniform boom a cable runs from this same point to a wall (the left-hand vertical coordinate) and by a pivot on t..
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. find the speed of the sled right before the team jumps on the sled
An arrow is shot at an angle such that it's horizontal velocity is 40 m/s, Find the horizontal distance the arrow will travel
An object weighs 475 "grams" in air and 345 "grams" when immersed in water. what is the volume of the object
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