Aradio broadcast antenna is 36.00 km from your house. suppose an airplane is flying 2.240 km above the line connecting the broadcast antenna and your radio, and that waves reflected from the airplane travel 88.00 wavelengths farther than waves that travel directly from the antenna to your house. do you observe constructive or destructive interference between the direct and reflected waves? (hint: does a phase change occur when the waves are reflected? )
the situation just described occurs when the plane is above a point on the ground that is two-thirds of the way from the antenna to your house. what is the wavelength of the radio waves?
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The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)
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Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.
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Aradio broadcast antenna is 36.00 km from your house. suppose an airplane is flying 2.240 km above t...
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