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Through the Cold War, American submarines operated as "lone wolves" at extreme ocean depths for many months at a time. Ordinary radio signals are greatly attenuated at such depths, making communication with the submarines difficult. One way suggested to communicate with the submarines was a program the Navy called Seafarer that utilized extremely low frequency waves. If the Seafarer transmitter broadcast at 80 Hz, what length would the transmitter's quarter wavelength antenna have to be in order to receive the signal?
At an amusement park, a swimmer uses a water slide to enter the main pool. obtain what is her speed at the bottom of the slide
An astronaut constructs a pendulum with a length of 1 meter on a new planet. If the period is 3 second, what is the acceleration due to gravity
A race car has a mass of 701 kg. It starts from rest and travels 35.0 m in 3.0 s. The car is uniformly accelerated during the entire time. Illustrate what net force is exerted on it?
The magnitude of earth's magnetic field is 50.0 µT and makes an angle of 30° with the plane of the coil. Assume a patient takes 1.50 s to inhale, find the magnitude of average induced emf in the coil during that time.
A person is making homemade ice cream. She exerts a force ofmagnitude 22 N on the free end of thecrank handle, what is the average power being expended
An organ pipe is open at both ends. It is producing sound at its third harmonic, the frequency of which is 262 Hertz. The speed of sound is 343 m/s. Determine what is the length of the pipe
A two-slit pattern is viewed on a screen 1.08 m from the slits. what is the total width of the central bright fringe
water has a mass per mole of 18.0 gmol and each water molecule h2o has 10 electrons.a how many electrons are there in
An 18.9 kilogram block is dragged over a rough, horizontal surface by a constant force of 118 Newton acting at an angle of 31o above the horizontal. Calculate the work done by the 118 N force
A patient is going to be prescribed bifocals which will be 3.20 cm from the eye, Without the bifocals, what is the patient's near point
a charged isolated metal sphere of diameter 12 cm has a potential of 8500 v relative to v 0 at infinity. calculate the
A horizontal wire carries a current I1=80 A. A secondwire is suspended parallel to it. If the second wire carries 20 Aand has a mass per unit length of 0.2 g/m,
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