A solid needle placed horizontally on the surface of the water floats due to?

A solid needle placed horizontally on the surface of the
water floats due to?
by

1 Answer

Answer :

Surface tension
of water
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Related questions

A solid needle placed horizontally on the surface of the water floats due to (a) Surface tension (b) Capillary action (c) Cohesion (d) Adhesion

Description : A solid needle placed horizontally on the surface of the water floats due to (a) Surface tension (b) Capillary action (c) Cohesion (d) Adhesion

Last Answer : Ans:(a)

A solid needle placed horizontally on the surface of the water floats due to (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Description : A solid needle placed horizontally on the surface of the water floats due to (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Last Answer : surface tension of water

A solid needle placed horizon-tally on the surface of the water floats due to – (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Description : A solid needle placed horizon-tally on the surface of the water floats due to – (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Last Answer : (3) surface tension of water Explanation: A solid needle placed horizontally on the surface of water floats due to surface tension of water.

A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Description : A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Last Answer : (1) Surface tension Explanation: The pin or needle floats because of an invisible elastic skin on the surface of the water. This elastic skin is called surface tension. Surface tension of the water leads to forces strong enough to support the needle's weight.

A needle or a pin floats on the surface of water because of (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Description : A needle or a pin floats on the surface of water because of (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Last Answer :  Surface tension

A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Description : A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Last Answer : b. Sink

The member which is placed horizontally to support common rafter of a sloping roof, is (A) Purlin (B) Cleat (C) Batten (D) Strut

Description : The member which is placed horizontally to support common rafter of a sloping roof, is (A) Purlin (B) Cleat (C) Batten (D) Strut

Last Answer : Answer: Option A

Why the needle of iron swims on water surface when it is kept gently? (1) It will remain under the water, when it will displace more water than its weight (2) the density of needle is less than that of water (3) due to surface tension (4) due to its shape

Description : Why the needle of iron swims on water surface when it is kept gently? (1) It will remain under the water, when it will displace more water than its weight (2) the density of needle is less than that of water (3) due to surface tension (4) due to its shape

Last Answer : (3) due to surface tension Explanation: According to Archimedes principle and we can note that the amount of water displaced by a needle is lesser than the amount of water moved out by the needle ( ... is a contractive tendency of the surface of a liquid that allows it to resist an external force.

Why the needle of iron swims on water surface when it is kept gently ? (1) It will remain under the water, when it will displace more water than its weight (2) the density of needle is less than that of water (3) due to surface tension (4) due to its shape

Description : Why the needle of iron swims on water surface when it is kept gently ? (1) It will remain under the water, when it will displace more water than its weight (2) the density of needle is less than that of water (3) due to surface tension (4) due to its shape

Last Answer : due to surface tension

2. A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object? -Physics-10

Description : 2. A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object? -Physics-10

Last Answer : The position of the image should be at 2F since the image is the real and same size. It is given that the image of the needle is formed at a distance of 50 cm from the convex lens. Therefore, the needle is ... (u) = - 50 cm Image distance, (v) = 50 cm Focal length = f According to the lens formula,

A needle 10 cm long is placed along the axis of a convex lens of focal length 10 cm such that the middle point of the neddle is at a distance of 10 cm

Description : A needle 10 cm long is placed along the axis of a convex lens of focal length 10 cm such that the middle point of the neddle is at a distance of 10 cm

Last Answer : A needle 10 cm long is placed along the axis of a convex lens of focal length 10 cm such that ... lens. Find the length of the image of the neddle.

With the selector switches set for R X 10,000 and the leads placed in the proper receptacles, the needle settles on the '150' mark. What is the resistance value between the leads? EL-0047 A. 1500 ohms B. 150,000 ohms C. 1,500,000 ohms D. 1.5 ohms

Description : With the selector switches set for R X 10,000 and the leads placed in the proper receptacles, the needle settles on the '150' mark. What is the resistance value between the leads? EL-0047 A. 1500 ohms B. 150,000 ohms C. 1,500,000 ohms D. 1.5 ohms

Last Answer : Answer: C

A fresh egg sinks in pure water but floats in salty water. This is because (a) Saline water is denser than pure water (b) Saline water is lighter than pure water (c) The viscosity of saline water is higher than that of pure water (d) The surface tension of saline water is lower than that of pure water

Description : A fresh egg sinks in pure water but floats in salty water. This is because (a) Saline water is denser than pure water (b) Saline water is lighter than pure water (c) The viscosity of saline water ... than that of pure water (d) The surface tension of saline water is lower than that of pure water

Last Answer : Ans:(a)

(4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Explanation: Water is not effective in extinguishing a fire caused by petrol because water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn. The specific gravity (or relative density) of gasoline ranges from 0.71-0.77 kg/l (719.7 kg/m3) while the specific gravity of water is 1000 kg/m3 and that is why gasoline or petrol floats on the upper surface of the water. Water cannot generally be used to extinguish a gasoline fire, unless used in a fine mist.

Description : (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Explanation: Water is not effective in extinguishing a fire caused by petrol because water and ... . Water cannot generally be used to extinguish a gasoline fire, unless used in a fine mist.

Last Answer : "All the four quantum numbers of two electrons in an atom are not the same." It is the law of (1) Hund’s (2) Exclusion Principle of Pauli (3) Uncertainty Principle of Giesenberg (4) Avogadro’s law

An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.

A wooden board 2 meters long, 30 centimeters wide and 4 centimeters thick floats in water with 1 centimeter of its thickness above the surface. The mass of the board is: w) 1.8 kilograms x) 18 kilograms y) 24 kilograms z) 176 kilograms

Description : A wooden board 2 meters long, 30 centimeters wide and 4 centimeters thick floats in water with 1 centimeter of its thickness above the surface. The mass of the board is: w) 1.8 kilograms x) 18 kilograms y) 24 kilograms z) 176 kilograms

Last Answer : ANSWER: X -- 18 KILOGRAMS

An egg sinks in soft water but floats in a concentrated solution of salt because (1) egg absorbs salt from the solution and expands (2) albumin dissolves in salt solution and egg becomes lighter (3) the density of salt solution exceeds the density of eggs (4) water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because (1) egg absorbs salt from the solution and expands (2) albumin dissolves in salt solution and egg becomes lighter (3) the density of salt solution exceeds the density of eggs (4) water has high surface tension

Last Answer : the density of salt solution exceeds the density of eggs

The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All the above

Description : The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All the above

Last Answer : Answer: Option D

The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All these

Description : The slag which floats on the surface of the molten iron generally contains (A) Lime (CaO) 45% (B) Silica (SiO2) 35% (C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% (D) All these

Last Answer : Answer: Option D

Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Description : Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and ... the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Last Answer : ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC POTENTIAL ON THE SURFACE OF THE SPHERE 

The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface) (A) wA (B) wx (C) wAx (D) wA/x

Description : The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface) (A) wA (B) wx (C) wAx (D) wA/x

Last Answer : Answer: Option C

What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Description : What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Last Answer : d. The same as Class D

An aircraft flying over the sea between 4500ft and 9000ft AMSL and outside CAS. To continue under VFR the meteorological conditions must remain: a. 2000ft horizontally and 1000ft vertically from cloud with visibility of 8km b. 1500m horizontally and 1000ft vertically from cloud with visibility of 5km c. 1500m horizontally and 1000m vertically from cloud with visibility of 5km d. Clear of cloud and in sight of the surface with visibility of 5km

Description : An aircraft flying over the sea between 4500ft and 9000ft AMSL and outside CAS. To continue under VFR the meteorological conditions must remain: a. 2000ft horizontally and 1000ft vertically from cloud with ... visibility of 5km d. Clear of cloud and in sight of the surface with visibility of 5km

Last Answer : b. 1500m horizontally and 1000ft vertically from cloud with visibility of 5km

What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Description : What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from ... . 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Last Answer : d. The same as Class D

After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance: w) increases steadily x) decreases steadily y) first decreases, then increases z) remains constant

Description : After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance: w) increases steadily x) decreases steadily y) first decreases, then increases z) remains constant

Last Answer : ANSWER: Z -- REMAINS CONSTANT 

The reddish hue of the Sun at sunset is due to the fact that (a) Sunlight is polarized horizontally when scattered by molecules of the atmosphere (b) Light of short wavelength is scattered more effectively by the atmosphere than light of long wavelength (c) Light of short wavelength is scattered less effectively than light of long wavelength (d) Sunlight is polarized vertically when scattered by molecules of the atmosphere

Description : The reddish hue of the Sun at sunset is due to the fact that (a) Sunlight is polarized horizontally when scattered by molecules of the atmosphere (b) Light of short wavelength is ... than light of long wavelength (d) Sunlight is polarized vertically when scattered by molecules of the atmosphere

Last Answer : Ans:(b)

A large ship can float but a steel needle sinks because of (a) Viscosity (b) Surface tension (c) Density (d) None of these

Description : A large ship can float but a steel needle sinks because of (a) Viscosity (b) Surface tension (c) Density (d) None of these

Last Answer : Ans:(d)

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is (a) coelomic fluid (b) haemolymph (c) slimy mucus (d) excretory fluid.

Description : If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is (a) coelomic fluid (b) haemolymph (c) slimy mucus (d) excretory fluid.

Last Answer : (a) coelomic fluid

A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be a.5 cm b.10 cm c.12.5 cm d.20 cm e.15 cm

Description : A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be a.5 cm b.10 cm c.12.5 cm d.20 cm e.15 cm

Last Answer : a. 5 cm

Explain in one word "that which floats in water" ?

Description : Explain in one word "that which floats in water" ?

Last Answer : What aquatic - "Aquatic".

Why water hyacinth floats in water ?

Last Answer : : There is a lot of air chamber between the stalk and leaves of Kachuri drink which is why it floats in water.

A body floats on water and also on an oil of density `1.25`. Which of the following is/are true?

Description : A body floats on water and also on an oil of density `1.25`. Which of the following is/are true?

Last Answer : A body floats on water and also on an oil of density `1.25`. Which of the following is/are true? ... need 1.25 times load in case of oil than in case

Lithium floats an water while sodium floats and catches fire when put in water.

Description : Lithium floats an water while sodium floats and catches fire when put in water.

Last Answer : Explain : Lithium floats an water while sodium floats and catches fire when put in water.

What Oil floats on water because it is denser true or false?

Description : What Oil floats on water because it is denser true or false?

Last Answer : Oil floats on water because water is denser than oil.

If an object floats the volume of the displacement water is equal to the volume of the whole object?

Description : If an object floats the volume of the displacement water is equal to the volume of the whole object?

Last Answer : False - Apex

Water that floats in the sky condenses to form these?

Description : Water that floats in the sky condenses to form these?

Last Answer : River

A body partially floats in water when (a) The volume of the displaced liquid is equal to the volume of the body (b) The volume of the displaced liquid is greater than the volume of the body (c) The weight of the displaced water is equal to the weight of the body (d) The weight of the displaced water is greater than the weight of the body

Description : A body partially floats in water when (a) The volume of the displaced liquid is equal to the volume of the body (b) The volume of the displaced liquid is greater than the volume of the body (c) ... the weight of the body (d) The weight of the displaced water is greater than the weight of the body

Last Answer : Ans:(a)

A cube of wood supporting a block of mass 200 grains just floats in water. When the block is removed, the cube rises by 2 cm. What is the size of the cube? (a) 6 cm (b) 8 cm (c) 10 cm (d) 12 cm

Description : A cube of wood supporting a block of mass 200 grains just floats in water. When the block is removed, the cube rises by 2 cm. What is the size of the cube? (a) 6 cm (b) 8 cm (c) 10 cm (d) 12 cm

Last Answer : Ans:(c)

When a ship floats on water (a) It displaces no water (b) The mass of water displaced is more than the mass of the ship (c) The mass of water displaced is equal to the mass of the ship (d) The mass of water displaced is less than the mass of the ship

Description : When a ship floats on water (a) It displaces no water (b) The mass of water displaced is more than the mass of the ship (c) The mass of water displaced is equal to the mass of the ship (d) The mass of water displaced is less than the mass of the ship

Last Answer : Ans:(c)

A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is (a) 0.8 (b) 0.9 (c) 1.0 (d) 1.2

Description : A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is (a) 0.8 (b) 0.9 (c) 1.0 (d) 1.2

Last Answer : Ans:(a)

That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Description : That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Last Answer : (3) Archimedes Principle Explanation: The floating of an iron ship in water is an example of Archimedes principle. Archimedes' principle states that an object floats on water if the weight of the water ... . Since the average density of the ship as a whole is less than the density of water.

An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Description : An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Last Answer : (2) Falls

When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in the electrolyte B. any water that has been previously added to the cells will dilute the solution and give a false reading C. a hydrometer reading is inaccurate if taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings

Description : When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in ... taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings

Last Answer : Answer: C

Which stone floats on water? A. Pumice stone (Answer) B. Lime stone C. Basalt stone D. Quartzite stone

Description : Which stone floats on water? A. Pumice stone (Answer) B. Lime stone C. Basalt stone D. Quartzite stone

Last Answer : A. Pumice stone (Answer)

A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is (A) 3.53 kN (B) 33.3 kN (C) 35.3 kN (D) None of these

Description : A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is (A) 3.53 kN (B) 33.3 kN (C) 35.3 kN (D) None of these

Last Answer : Answer: Option C

A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is (A) 0.83 (B) 0.6 (C) 0.4 (D) 0.3

Description : A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is (A) 0.83 (B) 0.6 (C) 0.4 (D) 0.3

Last Answer : Answer: Option B

When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as (A) Beam (B) Depth (C) Freeboard (D) Draft

Description : When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as (A) Beam (B) Depth (C) Freeboard (D) Draft

Last Answer : (D) Draft

An ice block with a piece of lead embeded in it floats in water. If ice melts the water level (1) Rises (2) Falls (3) Remains same (4) Falls first and then rises

Description : An ice block with a piece of lead embeded in it floats in water. If ice melts the water level (1) Rises (2) Falls (3) Remains same (4) Falls first and then rises

Last Answer : Falls

Can the Clintons sue the United States Government when Trump floats accusations of murder?

Description : Can the Clintons sue the United States Government when Trump floats accusations of murder?

Last Answer : Perhaps fortunately, it would be next to impossible to seat a jury with the majority unconvinced of the derangement of the defendant.

Anything else that floats when spoiled?

Description : Anything else that floats when spoiled?

Last Answer : Dead bodies.