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When operating a PWC at greater than no wake or idle speed how far away must you stay from a swimmer in the water?
Wiki User
∙ 11y ago
50 feet
Wiki User
∙ 11y ago
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Is the speed in water vapor greater than speed in water?
Not the speed of sound.
Should you save a man who know how to swim or a woman who don know how to swin?
Save the non-swimmer - their need is greater ! The swimmer can at least tread water until they're rescued !
Is the speed of sound in steel greater than speed in water?
Yes.
The speed in water is less than or greater than the speed of sound of air?
The speed of sound in water is greater than the speed of sound in air . For example, at 20 °C and 1 ATM pressure, the speed of sound in air is 343 m/s, and its speed in water is 1482 m/s. In general, the speed of sound in a medium = (bulk modulus of the medium/ its density)^0.5 where the bulk modulus indicates how compressible the medium is; the greater the bulk modulus, the more incompressible the medium is. So, although water has a density much greater than that of air, water is also much more incompressible than air. When you solve for the speed of sound for both water and air using the above formula, you will find that it is greater in water.
Is the speed of light greater or lesser in air than in water?
The speed is the same. Light travels at a finite speed.
What moves a swimmer forward in the water?
The answer is: The swimmer exerts a reaction force on the water.
A swimmer moves through the water at an average speed of 0.22 meter per second.The average drag force is 110 N.What average power is required of the swimmer?
Since the speed is constant (acceleration is zero), we know the horizontal forces are balanced.The swimmer's forward force cancels the 110N drag force.Work done by the swimmer is (110N x .22meter) = 24.2 N-m per second= 24.2 Joules per second= 24.2 watts
Does use of flippers affect a swimmers speed?
yes because the flippers known as fins in proper swimming give the swimmer wider spread feet which means that there is more room for the swimmer to push aside more of the water and faster.
How can the movement of molecules help explain why hot water evaporates faster?
If the water is cold, that means that water molecules have small speed, in hot water, molecules have greater speed, thus greater energy, and need less energy than cold water to be kicked out through the surface.
Why is a swimmer not hurt while diving in a deep water tank?
its because he is a good swimmer
Is tiger a very good swimmer?
Unlike most cats aversion to water the Tiger is a very good swimmer and is not afraid to get in the water.
Why does erosion of a riverbed increase so much during flood times?
There is a much higher volume of water, and increased speed in a river that is in flood. This increase in force will move stones and boulders, scouring the river's bed.
