Why are persons who are confined to bed less likely to develop bedsores on their bodies if they rest on a waterbed rather than an ordinary mattress?

Q: The water was poured from the top of the vertical tube, what happened to the barrel below when it…

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Q: You can squirt water from a garden hose a considerably greater distance by partially covering the…

A: Given: The squirt water from a garden hoses a considerably greater distance by partially covering…

Q: Consider a coin thrown into the river. Why would a coin not float? In what way will the coin sink…

A: If the weight of displaced water is at least equal to the weight of the boat, the boat will float.…

Q: Why a boat which barely floats in the ocean while a hole in it is sealed, sinks when pulled up in…

A: Answer The density of sea water is higher than the density of pure water. Because the dissolved salt…

Q: You are driving a convertible with a canvas top. When driving high speeds, will the canvas top bulge…

A: Bernoulli's principle says that the higher the speed of air, the lower is the pressure. When the car…

Q: What is the pressure on a swimmer 10m below the surface of a lake?

A: The expression for the pressure on the swimmer is given by,

Q: A rubber hose is attached to the funnel and the free end is bent around to point upward. When water…

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Q: Consider an object that is attached to a spring balance and is in equilibrium while immersed in…

A: Given:Consider an object that is attached to a spring balance and is in equilibrium While immersed…

Q: If a submerged object displaces an amount of liquid with a weight less than its own, when the object…

A: Answer If the weight of the object is less than this displaced quantity the object floats. If more…

Q: How many penguins with a mass of 30 kg can a disc-shaped ice float with dimensions of (d = 15 m, h =…

A: Given: Mass of penguins = 30 kg Dimension of disc-shaped ice: d = 15 m or r = 152 m h = 1 m Density…

Q: Why does a stream of water get narrower as it falls from a faucet?

A: According to principle of continuity, the product of velocity and area of cross section must be…

Q: Why don’t ships made of iron sink, even though iron is more dense than water ?

A: Ships made of iron sink even the iron is more dense than water because of following reasons:-

Q: What is the pressure on a swimmer 10 m below the surface of a lake?

A: Calculating the pressure at a depth of 10 m inside the lake:

Q: Why does a helium filled balloon float in air?

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Q: Why do airplanes normally take off facing the wind?

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Q: A small, dry paper clip can rest on the surface of still water. Why can’t a heavier paper clip do…

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Q: A block of wood that weighs 61.1 N and of s = 0.72 is tied by a string to the bottom of a tank of…

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Q: How is pressure related to the sharpness of a knife and its ability to cut?

A: Pressure is defined as a force exerted per unit area, while the sharpness of a knife is defined as…

Q: Coffee runs up into a lump of sugar when one corner is held in the liquid. Why?

A: It is due to the fact that sugar lump has many tiny holes in it.

Q: A boat (with a flat bottom) and it's cargo weigh 5,000 N. The area of the boat's bottom is 4 m^2.…

A: The volume of water displaced by the boat is equal to the volume of the boat under water. Vboat…

Q: What happens to the pressure in water as it speeds up when it is ejected by the nozzle of the garden…

A: According to the Bernoulli’s principle, when the speed of a fluid increases, the internal pressure…

Q: A person in a boat floating in a small pond throws an anchoroverboard. What happens to the level of…

A: The water level of the pond will fall because as the boat is lighter when the anchor is over board.

Q: Why do some objects float while others, with the same mass, sink? Whatkeeps a massive steel ship…

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Q: Why did the pepper suspend on top of water?

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Q: If an object is less dense than the fluid in which it is submerged, it will float. (True or False)

A: This statement is true.

Q: A drop of liquid under no external force , is always spherical in shape . Why?

A: Chalk pieces contain large number of pores filled with air. When the chalk pieces are dipped in…

Q: Why is the contribution of viscous effects to lift usually negligible for airfoils?

A: The contribution of the viscous effects to the lift of airfoils is usually negligible.

Q: Will the same ship float higher in salt water than in freshwater? Explain your answer.

A: Buoyant force is equal to weight of volume of liquid displaced. Since the ship is floating buoyant…

Q: Why are you more easily able to sink to the bottom of the swimming pool when you expel as much air…

A: When you inhale air into your lungs, you are able to float because air is lighter than water.

Q: You can squirt water a considerably greater distance by placing your thumb over the end of a garden…

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Q: Why is force exerted by static fluids always perpendicular to a surface?

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Q: How do jogging on soft ground and wearing padded shoes reduce the pressures to which the feet and…

A: jogging on a soft ground with padded shoes

Q: weight On a scale dS a U. FIGU 11. Why do you float higher in salt water than in fresh water? the…

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