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A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. If the speed of sound in what is 1517 m/s and it takes 64.13 s for the return pulse to hit the hydrophone on the bottom of the ship, how deep is the submarine?
Two pendula of equal length b and equal masses m connected by a spring of force constant k. Write the Lagrangian for the system, and use it to derive the equations of motion of the system
Point charge 3.0?C is located at x = 0, y = 0.30 m, point charge -3.0?C is located at x = 0 y = -0.30 m, what are the magnitude and direction of total electric force
At what distance along the central axis of a ring of radius 1.8 cm and uniform charge 66 C is the magnitude of the electric field maximum.
Find out the longest wavelength electrons that can produce a first-order maximum.
Suppose you have to move a heavy crate of weight 875 N by sliding it along a horizontal concrete floor. What is the magnitude Fp of the minimum force you need to exert on the crate to make it start sliding along the floor
An outboard motor for a boat is cooled by lake water at 14.7 degC and has a compression ratio of 14.1, Calculate efficiency of the engine's Otto Cycle
A rock band playing an outdoor concert produces sound at 120dB 5.0m away from their single working loudspeaker. What is the intensity (I) 5 m from the loudspeaker
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V greatest potential difference operating at 5000 rad/s .
Boxes A and B have masses of 12 kg and 4 kg, in that order. The two boxes are released from rest. Use conservation of energy to find out the boxes speed when box B has fallen a distance of 00.5 m.
A 44.20 cm diameter disk rotates with a constant angular acceleration of 2.84 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at t..
A container of volume V is divided by partitions into three parts containing one kilomole of helium gas, Calculate the kilomole fraction and the partial pressure of each gas in the mixture
A spaceship is approaching the earth at a relative speed of 0.85c. The mass of the ship is 1.00 X 107 kg. find the classical momentum of the ship
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