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(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 29.4 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa.
(b) What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 35.7 cm?
A blackbody is emitting radiation at a rate of 25 W at 27oC. what is the rate of emission
A negatively charged ball having a mass of 10 grams falls from rest in vacuum from a height of 3 meters in a uniform vertical electric field of 104 N/C. find Is the electric field pointing up or down
describe free-body diagram for the mass. Calculate the tension in each part of the rope.
Solenoids produce magnetic fields that are relatively intense for the amount of current they carry. To make a direct comparison, Find the magnetic field at the center of the solenoid
A ball of mass 0.45 kg is traveling with a velocity of 1.2 m/s north, 2.4 m/s east and 0.6 m/s up. What is the angular momentum of the ball with respect to the point at which the rope is attached to the post
An electron is launched at 4.7x10 6 m/s into a 2.8 T magnetic field. What is the diameter of its orbit
a chartered airplane flies 100 km east, then 350 km north west, and then 150 km at 30 degrees west of south. determine the direction of the last leg of the journey
q1. a 5.00-g bullet is shot through a 0.96-kg wood block suspended on a string 2.70 m long. the center of mass of the
the supersonic aircraft concorde has a length of 61.5m when sitting on th ground on a typical day when the temperature is 15.0 degrees C. what is the temperature of the concordes skin in flight
Computer hard drives are made of aluminum platters coated with a layer of magnetic material. How many such domains must a hard drive of 3 TB have (1 Byte = 8 bits)
The transformer in the DC supply for my laptop has an output voltage of 20 volts when plugged into a 110 volt outlet. What is the input current of the power transformer
A block of wood (Mblock = 5.8 kg) rests on a horizontal surface for which the coefficient of kinetic friction is 0.6. What was the initial velocity of the bullet before impact
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