Explain why when we try to close a water tap with our fingers, fast jets of water gush through the openings between our fingers.

Q: A heavy stone rests on the bottom of the swimming pool. The normal force of the bottom of the pool…

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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: bottom of a car hits a sharp rock, which punctures a small hole on the bottom of its gas tank. If…

A: Given h = 30 cm = 0.3 m

Q: The pressure exerted on the ground by a man is greatest when: O all of the other choices yield the…

A: Pressure - Force per unit perpendicular area is the pressure. So when the area is minimum then the…

Q: 1.A scale reads 91 N when a plece of aluminum is hanging from it. What does it read when it is…

A: Given*The weight of aluminium is W=91 N*The density of aluminium id Pa=2700 kg/m3*The acceleration…

Q: A boy stands on the back of a rowboat and dives into thewater. What happens to the boat as he leaves…

A: A boy dives into water

Q: The terminal velocity is 2 m/s for a metallic sphere 4mm diameter dropped in a liquid. If another…

A: Given data: Terminal velocity of metallic sphere is, v1=2 m/s. Diameter of metallic sphere is, d=4…

Q: o Hard-boiled egg with shell removed o A bottle or flask with an opening that is just small to…

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Q: A person who is 30 m under water will experience more pressure than a person 40 m underwater more…

A: In fluids pressure increases with depth. If depth increases pressure also increases

Q: Does water flow from higher head to lower head or lower head to higher head? Why?

A: Introduction In Hydraulics the term "Head" refers to the energy associated with the fluid. Higher…

Q: toy robot floats in a swimming pool. Which volume the bouyant force exerted on the toy robot depends…

A: a toy robot floats in a swimming pool. Which volume the bouyant force exerted on the toy robot…

Q: . The velocity of a falling ball in a viscous fluid is explained by the following relationship a. F=…

A: According to Newton's, the frictional (or viscous force ) between two layer depends upon the…

Q: A puffer fish has a defense mechanism where it fills up a special bladder with air. What happens to…

A: The buoyant force on the fish in sea water has the formula given below FB=dgVd is the density of sea…

Q: At what speed will the velocity head of stream of water be 50 cm? Use g= 10m//s^(2).

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Q: a paper boat floats in a swimming pool. Which volume the bouyant force exerted on the toy robot…

A: Step1 - Understanding the concept of buoyant force.                 Buoyant force (F) =…

Q: Do things get lighter in water?

A: Objects in water experience an upward force known as the Buoyancy force. This force is given by Fb =…

Q: When a body is moved from sea level to the top of a mountain, what changes occur in the body? Is it…

A: The mass of an object is a measure of the object's inertial property or the amount of matter it…

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

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Q: When people get into a small boat it settles lower in the water and a   the buoyant force…

A: d. All of the above

Q: Why is a slight blow on a cork of bottle fully filled with a liquid sufficient to break the bottle?

A: Answer :Increase in pressure increases the velocity of molecules

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 glass Dropped from the floor is more likely to break if the floor is concrete than if it is wood?…

A: To answer the question, we will use the concept of momentum and force.

Q: Spring deflection in a translational mechanical system is equivalent to in a fluid system. А. mass…

A:

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: Archimedes observed that a gold and silver crown displaced more water than a lump of pure go even…

A: Water displaced from a container depends on the density of the material submersed in the container.…

Q: It is not advisable to put on wet clothes, Why?

A: The specific heat of water,

Q: Quèstion 2 Choose the correct answer Water O No correct answer O Water flowing through R will be…

A:

Q: Why do gymnasts use floor mats that are very thick?

A: The gymnasts use floor mats that are very thick mats, since the thick mat having good amount of…

Q: Two firefighters must apply a total force of 600 N to steady a hose that is discharging water at the…

A:

Q: Hoops spend much of there lives in water but amazingly they don’t swim they have like manatees very…

A:

Q: a boat with a flat bottom and its cargo weigh 5000 N. the area of the boats bottom is 4m^2 how far…

A: using equilibrium of forces : weight = buoyant force weight = V * density of water * g 5000 = area *…

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

A:

Q: When you get a blood transfusion the bag of blood is held above your body, but when you donate blood…

A: Blood transfusion

Q: Water leaks from a hole in a water tank which is a 17.66 meters below the surface of the water which…

A:

Q: 3. Ned fills a backpack pump with 7 gallons of water. How much weight in water has he added to his…

A: Given data- Ned fills a backpack pump with 7 gallons of water.  We convert gallon to pound (lbs)-…

Q: If an empty cylinder is half filled with a liquid, its center of gravity is:    A) shifted upwards…

A: Center of gravity is known as the point of the object where weight is evenly dispersed  means all…

Q: a penny is small and light. a kickball is much larger and heavier. but a penny sticks in water and…

A: Given statement : Penny is small and light than a kickball which is larger and heavier but still…

Q: Water is discharged from the hose with a speed of 42ft/sec. Determine the two possible angles the…

A:

Q: Air flows over the upper surfaces of the wings of an acroplane at a speed of 120.0ms, and past the…

A: Given : Speed of air on lower surface of wings of  aeroplane, v1 = 110.0 m/s Speed of air on upper…

Q: A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks…

A: When the rocks are in the boat, W=ρW×V×g When the rocks are thrown overboard, W=ρR×Vi×g

Q: You are participating in a canoe race in a lake. Suppose you can row your canoe at a constant speed…

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Q: Water flows through a garden hose which is attached to a nozzle. The water flows through hose with a…

A: Given that1 The water flows through hose with a speed(V1) = 2.55 m/s the nozzle with a speed( V2)…

Q: Choose the correct answer Water R Water flowing through all holes will travel same distance. O Water…

A: A hole lower down will shoot farther than a hole higher up. This is a consequence of the amount of…