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Q. (a) compute the absolute pressure at the bottom of a freshwater lake at a point whose depth is 25.5 m. assume the density of the water is 1.00 x10^3 kg/m3 and the air above is at the pressure of 101.3 kPa.
(b) What force is exerted by the water on the window of an underwater vehicle at this depth if window is circular and has a diameter of 32.4 cm?
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
Suppose the speed of light in a vacuum were only 25.5 mi/h. Find the length of the bicycle being ridden at a speed of 20.0 mi/h as measured by an observer sitting on the park bench, given that its proper length is 1.59 m.
A 60kg bicyclist rides his 7.8kg bicycle with a speed of 16m/s. How much work must be done by the brakes to bring the bike and rider to a stop.
Coherent light with wavelength 609 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3 from the slits.
Find out the magnitude of the acceleration of the electron. How large is the pulling force it the wagon is moving with a constant speed.
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
What is the force of air resistance. how high was the jump.
How fast (in {rm rpm}) must a centrifuge rotate if a particle 8.5 cm from the axis of rotation is to experience an acceleration of 115000 {rm g}'s.
What is magnitude of the current
How much time elapses between first splash and second splash
A water pipe is inclined 32.0° below the horizontal. The radius of the pipe at the upper end is 3.00 cm. If the gauge pressure at a point at the upper end is 0.117 atm, what is the gauge pressure at a point 2.65 m downstream, where the pipe has narro..
An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find out the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C.
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