A solid is 40 Newton when immersed totally in a liquid of relative density 0.8. calculate the weight when immersed in water?

A solid is 40 Newton when immersed totally in a liquid of relative density 0.8. calculate the weight when immersed in water?
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a solid is 40 Newton when immersed totally in a liquid of relative density 0.8. calculate the weight when immersed in water
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According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to (A) The weight of the body (B) More than the weight of the body (C) Less than the weight of the body (D) Weight of the fluid displaced by the body

Description : According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to (A) The weight of the body (B) More than the weight of the body (C) Less than the weight of the body (D) Weight of the fluid displaced by the body

Last Answer : Answer: Option D

Which principle states that when a body is partially or totally immersed in a fluid, it experiences an upward thrust equal to the weight of the fluid displaced by it?

Description : Which principle states that when a body is partially or totally immersed in a fluid, it experiences an upward thrust equal to the weight of the fluid displaced by it?

Last Answer : Archimedes

Centre of pressure in an immersed body is __________ the centre of gravity. (A) Above (B) Below (C) At (D) Either above or below; depends on the liquid density

Description : Centre of pressure in an immersed body is __________ the centre of gravity. (A) Above (B) Below (C) At (D) Either above or below; depends on the liquid density

Last Answer : (B) Below

In an immersed body, centre of pressure is (A) At the centre of gravity (B) Above the centre of gravity (C) Below be centre of gravity (D) Could be above or below e.g. depending on density of body and liquid

Description : In an immersed body, centre of pressure is (A) At the centre of gravity (B) Above the centre of gravity (C) Below be centre of gravity (D) Could be above or below e.g. depending on density of body and liquid

Last Answer : Answer: Option C

When a body is immersed in a liquid, the force acting on it is – (1) Upthrust (2) Weight (3) Mass (4) Both (1) and (2)

Description : When a body is immersed in a liquid, the force acting on it is – (1) Upthrust (2) Weight (3) Mass (4) Both (1) and (2)

Last Answer : (4) Both (1) and (2) Explanation: According to the Principle of Flotation, when a body is immersed in a fluid, two forces act on it: ( 1) The weight of the body acting vertically downward ... gravity of the fluid displaced, i.e., centre of buoyancy. The upthrust is also termed as buoyant force.

Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The point through which buoyant force acts, is called the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid

Description : Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The ... the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid

Last Answer : Answer: Option D

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

When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called (A) Pascal's law (B) (C) Principle of floatation (D) Bernoulli's theorem

Description : When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called (A) Pascal's law (B) (C) Principle of floatation (D) Bernoulli's theorem

Last Answer : Answer: Option B

When a body is immersed in a liquid, the force acting on it is (1) Upthrust (2) Weight (3) Mass (4) Both (1) and (2)

Description : When a body is immersed in a liquid, the force acting on it is (1) Upthrust (2) Weight (3) Mass (4) Both (1) and (2)

Last Answer : Both (1) and (2)

5) An iron ring of mean circumference of 80 cm is uniformly wound with 500 turns of wire. Calculate the value of flux density that a current of 1 A would produce in the ring. Assume relative permeability 1400.

Description : Please ripley me due to emergency

Last Answer : To calculate the flux density in the ring, you need to use the following formula: B = (μ * I * N) / (2 * π * r) where: B is the flux density in the ring (in teslas) μ is the relative permeability ... 2 * π * 0.127 m) = 0.53 T So the flux density in the ring would be approximately 0.53 teslas.

Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water. -Maths 9th

Description : Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water. -Maths 9th

Last Answer : The amount of water displaced by a solid spherical ball when it is completely immersed in water is equal to its volume. Volume of a sphere of radius r is 34​πr3 As the diameter of the ball is 4.2 cm, its radius r=2.1 cm Hence, volume of water displaced =34​πr3=34​×722​×2.1×2.1×2.1=38.808 cm3

Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water. -Maths 9th

Description : Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water. -Maths 9th

Last Answer : Solution of this question

How do water relative densities as a solid and a liquid differ from most other substances?

Description : How do water relative densities as a solid and a liquid differ from most other substances?

Last Answer : The solid phase of water (ice) is less dense than its liquid phase, therefore ice floats on liquid water. For other substances, the solid phase is most dense and it sinks in its liquid.

When a piece of stone is immersed in water, it displaces water of equal – (1) Density (2) Specific gravity (3) Mass (4) Volume

Description : When a piece of stone is immersed in water, it displaces water of equal – (1) Density (2) Specific gravity (3) Mass (4) Volume

Last Answer : (3) Mass Explanation: Archimedes' Principle states that upward buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid the body displaces.

When a piece of stone is immersed in water, it displaces water of equal (1) Density (2) Specific gravity (3) Mass (4) Volume

Description : When a piece of stone is immersed in water, it displaces water of equal (1) Density (2) Specific gravity (3) Mass (4) Volume

Last Answer : Mass

A soil mass coated with a thin layer of paraffin weighs 460 g. When immersed, it displaces 299 cc of water. The weight of paraffin is 10 g. If specific gravity of solids is 2.5 and that of paraffin 0.9, the void ratio of soil, is (A) 0.55 (B) 0.60 (C) 0.65 (D) 0.70

Description : A soil mass coated with a thin layer of paraffin weighs 460 g. When immersed, it displaces 299 cc of water. The weight of paraffin is 10 g. If specific gravity of solids is 2.5 and that of paraffin 0.9, the void ratio of soil, is (A) 0.55 (B) 0.60 (C) 0.65 (D) 0.70

Last Answer : Answer: Option B

Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density. (A) Shear stress (B) Shear force (C) Average drag per unit projected area (D) None of these

Description : Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density. (A) Shear stress (B) Shear force (C) Average drag per unit projected area (D) None of these

Last Answer : (C) Average drag per unit projected area

In what direction does the buoyant force on an object fully immersed in a liquid act ? -Science

Description : In what direction does the buoyant force on an object fully immersed in a liquid act ? -Science

Last Answer : upward direction

Explain why an object is immersed in liquid ?

Description : Explain why an object is immersed in liquid ?

Last Answer : When an object is partially or completely immersed in a liquid, the object removes the liquid in front of its volume. The weight of this removed fluid acts upwards on the object and is called buoyancy. If the weight of the object is greater than its mass, then the object is submerged in that liquid.

The power of a thin convex lens of glass is `5 dioptre`. When it is immersed in a liquid of refractive index `mu`, it behave like a diverging lens of

Description : The power of a thin convex lens of glass is `5 dioptre`. When it is immersed in a liquid of refractive index `mu`, it behave like a diverging lens of

Last Answer : The power of a thin convex lens of glass is `5 dioptre`. When it is immersed in a liquid of refractive index ... liquid, if `mu` of glass `= 3//2`.

A convex lens of refractive index 1.5 is immersed in a liquid of refractive index (i) 1.6 (ii) 1.3 and (iii) 1.5. what changes happens to the focal le

Description : A convex lens of refractive index 1.5 is immersed in a liquid of refractive index (i) 1.6 (ii) 1.3 and (iii) 1.5. what changes happens to the focal le

Last Answer : A convex lens of refractive index 1.5 is immersed in a liquid of refractive index (i) 1.6 (ii) ... the focal length of the lens in the three cases ?

Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric liquid should have high surface tension (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Description : Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric ... point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Last Answer : (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

01. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift. A) True B) False

Description : 01. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift. A) True B) False

Last Answer : A

Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as (A) Lift (B) Drag (C) Stagnation pressure (D) Bulk modulus

Description : Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as (A) Lift (B) Drag (C) Stagnation pressure (D) Bulk modulus

Last Answer : Answer: Option B

Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Description : Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Last Answer : Answer: Option B

The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Description : The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Last Answer : Answer: Option C

The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Description : The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Last Answer : Answer: Option D

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Description : The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Last Answer : Answer: Option B

When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow. (A) Less than (B) More than (C) Equal to (D) None of these

Description : When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow. (A) Less than (B) More than (C) Equal to (D) None of these

Last Answer : Answer: Option A

The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface) (A) (IG/ ) - (B) (IG/ ) - (C) ( /IG) + (D) (IG/ ) +

Description : The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, ... (IG/ ) - (B) (IG/ ) - (C) ( /IG) + (D) (IG/ ) +

Last Answer : Answer: Option D

Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their (A) Viscosity (B) Density (C) Solubility (D) Relative volatility

Description : Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their (A) Viscosity (B) Density (C) Solubility (D) Relative volatility

Last Answer : (C) Solubility

If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is – (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Description : If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is – (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Last Answer : (2) Surface area of the bottom of the vessel Explanation: The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity. Static fluid pressure does not depend on the shape, total mass, or surface area of the liquid.

If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is – (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Description : If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is – (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Last Answer : (2) Surface area of the bottom of the vessel Explanation: The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity.

If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Description : If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Last Answer : Surface area of the bottom of the vessel

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)

Density in the solid state is slightly less than that in its liquid state, in case of (A) Carbon dioxide (B) Water (C) Mercury (D) None of these

Description : Density in the solid state is slightly less than that in its liquid state, in case of (A) Carbon dioxide (B) Water (C) Mercury (D) None of these

Last Answer : (B) Water

A radio signal moves from air to glass. The angle of incidence is 20°. Calculate the angle of refraction. The relative permittivity of the glass is 7.8. A. 7.8° B. 5.04° C. 6.04° D. 7.04°

Description : A radio signal moves from air to glass. The angle of incidence is 20°. Calculate the angle of refraction. The relative permittivity of the glass is 7.8. A. 7.8° B. 5.04° C. 6.04° D. 7.04°

Last Answer : D. 7.04°

A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than (A) 10 % (B) 15 % (C) 20 % (D) 25 %

Description : A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than (A) 10 % (B) 15 % (C) 20 % (D) 25 %

Last Answer : Answer: Option C

The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick (A) 20 % (B) 15 % (C) 10 % (D) None of these

Description : The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick (A) 20 % (B) 15 % (C) 10 % (D) None of these

Last Answer : Answer: Option A

If first class Brick is immersed in water for 24 hours it should not absorb water by weight more than a) 10% b) 15% c) 20% * d) 25%

Description : If first class Brick is immersed in water for 24 hours it should not absorb water by weight more than a) 10% b) 15% c) 20% * d) 25%

Last Answer : c) 20% *

Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? (A) Liquid density (B) Liquid viscosity (C) Hot surface temperature (D) Interfacial tension

Description : Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? (A) Liquid density (B) Liquid viscosity (C) Hot surface temperature (D) Interfacial tension

Last Answer : (D) Interfacial tension

The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Description : The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Last Answer : ANSWER: Z -- ABOVE WHICH THE SUBSTANCE CANNOT BE LIQUIFIED. 

Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid(A) Lies above the centroid of the plane surface(B) Is independent of the specific weight of the fluid(C) Is different for different fluids(D) Is at the centroid of the plane surface

Description : Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid (A) Lies above the centroid of the plane surface (B) Is independent of the specific weight of the fluid (C) Is different for different fluids (D) Is at the centroid of the plane surface

Last Answer : (B) Is independent of the specific weight of the fluid

To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is  (a) divided by its molecular weight  (b) multiplied by its molecular weight  (c) multiplied by its density  (d) multiplied by its specific weight  (e) divided by its specific weight.

Description : To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is  (a) divided by its molecular weight  (b) multiplied by its molecular weight  (c) ... by its density  (d) multiplied by its specific weight  (e) divided by its specific weight.

Last Answer : Answer : b

Define weight density and relative density and give its unit.

Description : Define weight density and relative density and give its unit.

Last Answer : i. Weight Density: It is the weight per unit volume. OR It is the ratio of weight to the volume   Unit: N/m3 or kN/m3  ii. Relative Density: It is the ratio of specific weight of liquid to the ... It is the ratio of density of liquid to the density of pure water at 40 C.   Unit: No unit. 

Liquid A and liquid B exert same amount of pressure on each other, but the density of A is twice the density of B. The height of liquid B is 10 cm, then the height of liquid A would be A. 5 cm B. 10 cm C. 20 cm D. 40 cm

Description : Liquid A and liquid B exert same amount of pressure on each other, but the density of A is twice the density of B. The height of liquid B is 10 cm, then the height of liquid A would be A. 5 cm B. 10 cm C. 20 cm D. 40 cm

Last Answer : 5 cm

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its (A) Specific weight (B) Specific mass (C) Specific gravity (D) Specific density

Description : If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its (A) Specific weight (B) Specific mass (C) Specific gravity (D) Specific density

Last Answer : Answer: Option C

Calculate the electric field when the conductivity is 20 units, electron density is 2.4 units and the velocity is 10m/s. Assume the conduction and convection current densities are same. a) 2.4 b) 4.8 c) 3.6 d) 1.2

Description : Calculate the electric field when the conductivity is 20 units, electron density is 2.4 units and the velocity is 10m/s. Assume the conduction and convection current densities are same. a) 2.4 b) 4.8 c) 3.6 d) 1.2

Last Answer : d) 1.2