Which force is involved in holding atoms together?

Q: A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without…

A: When the piece of iron is lowered into the water, the water level in the bucket increases. And so…

Q: A person with a muscle cramp in shallow water should try to relax the muscle by stopping the…

A: Muscle cramps are common among swimmers. To relieve muscle cramp, one should can stop the activity…

Q: A delivery truck with birds resting on its floor will be heavier than a vehicle with the same birds…

A: Given: A delivery truck with birds resting on its floor will be heavier than a vehicle with the same…

Q: You press a stick that has a varying cross-sectional area horizontally between the palms of your…

A: The pressure can be given as, Here, F and A represent the force, and the area, respectively. Let…

Q: The buoyancy of an object is determined by a rule known as __________. Galileo's Principle…

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Q: A rectangular block of ice with dimensions 2 x 3 x 0.2 m floats on water. A person weighing 600 N…

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Q: Metal pipes, used to carry water, sometimes burst in the winter because: A metal contracts more than…

A: Here , we have to give the reason , as to why the metal pipes , used to carry water , sometimes…

Q: An object is taken out of a 65 F room and placed outside where the temperature is 35 F room. Five…

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Q: Why is it that a larger piece of a metal that has a higher mass,has the same density as a smaller…

A: Given: Why is it that a larger piece of a metal that has a higher mass,has the same density as a…

Q: Units of viscosity?

A: Viscosity : The viscosity of a fluid is a measure of its resistance to flow. Viscosity results from…

Q: Tension and compression occur in a partially supported horizontal beam when it sags due to gravity…

A: Answer:- Tension and compression occur in a partially supported horizontal beam when it sags due to…

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: The book in the 3 figures is the same book: same weight, same dimensions. Which book exerts more…

A: Required:- Which book exerts more pressure on the surface. Definition:- Pressure is defined as the…

Q: A silver jewelry weighs 20N in air. What will its weight be when suspended in water. (density of…

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Q: The value of surface tension is more at O 50 oC O 80 oF O 103 oF O 300 oC O No correct answer

A: Surface tension is due to cohesive forces present on the boundary of a liquid .

Q: A rectangular oil tank of length 2 m, width 1.5 m is filled with oil to height of 0.9 m. S.G. of oil…

A: Dimension of the tank: Length (L)= 2 m Width (W)= 1.5 m Height (h)= 0.9 m Specific gravity of the…

Q: The value of surface tension is more at O 50 oC 80 OF 103 OF 300 oC O No correct answer

A: The value of surface tension is more at 80 oF.

Q: How is the smoke drawn up a chimney affected when a windis blowing outside?(a) Smoke rises more…

A: The pressure inside the chimney is more than the pressure outside which reduces the speed of the…

Q: A balloon has a buoyant force of 0.34 N. The balloon and string have a weight of 0.22 N what is the…

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Q: A little girl sits in a car at a traffic light holding a helium-filled balloon. The windows are…

A: When the little girl in a car at rest and then go forward all of the air rushes to the back of the…

Q: Which is the strongest? A) Top B) Middle C) Bottom D) They are all the same

A: From the diagram, it is clear that number of electric field lines at top and bottom charge are same.…

Q: Upward force on a floating body is called _______. A) jerk B) buoyancy C) Archimedal force D)…

A: When a body is immersed in a liquid, it experiences an upward force which is called buoyant force.

Q: a piece of string is tied on a small stone and a the stone is then suspended tollay immersed in…

A: Given, A piece of string is tied to the small stone.  Then it is immersed in water.

Q: Why should I pick a compression spring ping pong ball launcher over any other ping pong ball…

A: A compression spring ping pong ball launcher is just like a spring mass system. The force exerted by…

Q: Which is more elastic? O rubber string O steel string

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Q: The substances which reduce friction are called _________.   A) irregularities B) lubricants C)…

A: A lubricant can be defined as a substance, like as grease capable of reducing friction, heat, and…

Q: A wooden spherical ball with specific gravity of 0.45 and a diameter of 400mm is dropped at a height…

A: ball with specific gravity of 0.45diameter of 400mmheight of 5.2m density of wood=450 kg/m3

Q: In unstable equilibrium what is the relation between forces?

A: Unstable equilibrium occurs when the system is pushed at one end, then the system keeps going…

Q: What does the concept of scaling have to do with the fact that living cells in a whale are about the…

A: The scaling doesn’t necessarily mean that the size of the living cells is also gets scaled up with…

Q: What is the force from surfaces that prevents any object from sinking?

A: When an object of definite volume is submerged in liquid, the liquid exerts an upward force on the…

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: A Boeing 747-8I aircraft has a mass of 447,700 kg. This includes cargo. The combined area of both…

A: Since the pressure difference lifts the plane. Thus, the pressure difference must have to create a…

Q: Why were so many vertical columns needed to support the roofs of stone buildings?

A: Stones were the only raw material for construction in ancient Egypt and Greece. But as stones are…

Q: A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock…

A: A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock…

Q: The force of friction between two surfaces will increase if:   A) a layer of lubricant is kept…

A: Introduction: Frictional force is defined as the resistive force when there is relative motion…

Q: A boat has mass 1000toness and it is floating in sea water. Calculate the amount of water displaced

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Q: Rain drops acquire spherical shape due to    A) viscosity B) surface tension C) friction D)…

A: The tendency of a liquid, that makes it to shrink into the minimum surface area is known as Surface…

Q: a ball of 500g displaced 250 mL of water. How much would a 350g ball displace?

A: Mass of ball = 500g Volume of water displace = 250 mL Density = 500g / 250 mL              = 2 g/ mL…

Q: How come our feet hurt when we run on a sturdy ground compared to running in soft ground? Select the…

A: When we jump on study surface, our feet are brought to rest almost instantaneously. Thus time taken…

Q: Compared to a 1kg block of solid iron, a 2kg block of solid iron has the same   A. mass   B.…

A:

Q: You know two forces are balanced if the net force is.....

A: Two forces are balanced means both forces have same magnitude and opposite direction. According to…

Q: Both a gorilla and a mouse mistakenly run off the edge of the same high cliff. How does scaling aid…

A: The mouse has a large surface area per unit body weight. Hence while falling, the mouse faces more…

Q: Oil is less dense than water. Which has more volume 1Kg of water or 1kg of oil? The water The oil…

A: Given data: Density of oil is less than the density of water ρoil < ρwater Masses are equal m = 1…

Q: Which has more skin, an elephant or a mouse? Which has more skin per unit of body weight, an…

A: Out of the Elephant and the mouse, Elephant has more skin as it is larger in size.

Q: If an axe head is a wedge, are scissors a pair of wedges? why or why not?

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Q: A drop of liquid under no external forces is always spherical in shape.

A: The least amount of energy state is the most stable condition for any system. In order to avoid the…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!