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Talja [164]
3 years ago
13

Consider a 1.72-m-tall man standing vertically in water and completely submerged in a pool. Determine the difference between the

pressures acting at the head and at the toes of this man, in kPa. The pressure difference acting between the head and toes of the man is kPa.
Physics
1 answer:
bazaltina [42]3 years ago
5 0

Answer:

Pressure difference between head and toes = 16872.2 Pa

Explanation:

The pressure difference between the head and toes of the man will be equal to the water pressure exerted at his toes. This can be found as follows:

Water pressure = (density of water) * (gravity) * (height of water)

Density of water = 1000 kg/m^3

Gravity = 9.81 m/s^2

Height of water = height of man = 1.72 m

Water pressure = 1000 * 9.81 * 1.72

Water pressure = 16872.2 Pa  

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Answer:

The absolute pressure is 28.15 psi.

Explanation:

Gauge pressure = 28 inch of Mercury

Absolute pressure, Po = 14.4 psi

The absolute pressure is the sum of the gauge pressure and the absolute pressure.  

gauge pressure = 28 inch = 0.7112 m of Mercury

= 0.7112 x 13.6 x 1000 x 9.8 = 94788.736 Pa

= 13.75 psi

The absolute pressure is

P = 14.4 + 13.75 = 28.15 psi

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A crowbar is being used with an actual mechanical advantage of 8. If the input force is 400 Newton’s on the 0.3 meter long end o
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Answer:

C. 3,200

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2 years ago
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Answer:

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The formula for Index of refraction is:

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where n represents Index of refraction,

c represents speed of light in a vacuum,

v represents speed of light in a given material.

The speed and direction of light changes when it moves from one medium to another. The change in direction is basically called refraction.

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