\"1.) Calculate the pressure at the end of a hose if it is 3 m below the bottom

Question

"1.) Calculate the pressure at the end of a hose if it is 3 m below the bottom of a bucket flled with water to a height of .25 m above the bottome of the bucket.

2.) Given two hydraulic cylinders connected by a 5 mm hose one meter long. The bore diameter of cylinder one is 25 mm and the bore diameter of cylinder two is 75 mm. If a force of 30N is applied to cylinder one, how much mass can cylinder two support?

3.) Given a body at 50 degrees C with a surface area of 0.15 meters squared and an emissivity of 0.7, calculate the rate of radiant energy leaving the body.

4.) If a bus is moving toward you at a velocity of 60 km/hr, you are moving away from it at 3 m/s, what will be the observed frequency of its horn if it is 700 Hertz at rest? The velocity of sound is 320 m/s.

5.) What is the beat frequency of mixing three tuning forks, one at 762 hertz, one at 767 and one at 770 hertz?

6.) What is the decibel level of a sound with an intensity of 2.3 X 10 w/exponent -10 w/m squared?"

Explanation / Answer

1) P = 1000 kg/m^3 * 9.8 m/s^2 * (3 + 0.25) m = 31850 Pa

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