What is most buoyant wood?

What is most buoyant wood?
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Balsa
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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

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Description : If a object weighing 50 n displaces a volume of water weighing 10 n what is the buoyant force on the object?

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If an air parcel is warmer than the air at the specified altitude then the parcel will continue to rise because warmer air is less dense and therefore buoyant. This condition best describes what?

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A hydrogen filled balloon rises in air because (a) The atmospheric pressure decreases with altitude (b) The acceleration due to gravity decreases with altitude (c) The density of air decreases with altitude (d) The buoyant force exerted by the air on the balloon is greater than the weight of the balloon

Description : A hydrogen filled balloon rises in air because (a) The atmospheric pressure decreases with altitude (b) The acceleration due to gravity decreases with altitude (c) The density of air decreases with ... The buoyant force exerted by the air on the balloon is greater than the weight of the balloon

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Description : Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is ... convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr

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Description : __________ forces act on a particle moving through a stationary fluid (A) Gravity (B) Drag (C) Buoyant (D) All (A), (B), & (C)

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Description : Buoyant force (A) For non-symmetrical bodies is not vertical (B) Depends on the depth of the submergence of the floating body (C) Depends on the weight of the floating body (D) None of these

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The line of action of the buoyant force passes through the centre of gravity of the (A) Submerged body (B) Displaced volume of the fluid (C) Volume of fluid vertically above the body (D) Horizontal projection of the body

Description : The line of action of the buoyant force passes through the centre of gravity of the (A) Submerged body (B) Displaced volume of the fluid (C) Volume of fluid vertically above the body (D) Horizontal projection of the body

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The line of action of the buoyant force acts through the (A) Centroid of the displaced volume of fluid (B) Centre of gravity of a submerged body (C) Centroid of the volume of any floating body (D) None of these

Description : The line of action of the buoyant force acts through the (A) Centroid of the displaced volume of fluid (B) Centre of gravity of a submerged body (C) Centroid of the volume of any floating body (D) None of these

Last Answer : (A) Centroid of the displaced volume of fluid

The buoyant force acting on a floating body is dependent on the (A) Viscosity of the liquid (B) Weight of the liquid displaced (C) Depth of immersion of the body (D) Surface tension of the liquid

Description : The buoyant force acting on a floating body is dependent on the (A) Viscosity of the liquid (B) Weight of the liquid displaced (C) Depth of immersion of the body (D) Surface tension of the liquid

Last Answer : (B) Weight of the liquid displaced

The time of oscillation of a floating body is (A) Longer, if Metacentric height is increased (B) Independent of the Metacentric height (C) Dependent on the buoyant forces only (D) None of these

Description : The time of oscillation of a floating body is (A) Longer, if Metacentric height is increased (B) Independent of the Metacentric height (C) Dependent on the buoyant forces only (D) None of these

Last Answer : (D) None of these

Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces(B) A hydrometer used for the determination of specific gravities of liquidsworks on the principle of buoyant forces(C) In case of unsteady fluid flow, the velocity at any given point does notchange with time(D) Turbulent fluid flow is characterised by the rapid fluctuation ofinstantaneous pressure & velocity at a poin

Description : Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces (B) A hydrometer used for the determination of ... Turbulent fluid flow is characterised by the rapid fluctuation of instantaneous pressure & velocity at a poin

Last Answer : (C) In case of unsteady fluid flow, the velocity at any given point does not change with time

Forces acting on a particle settling in fluid are __________ forces. (A) Gravitational & buoyant (B) Centrifugal & drag (C) Gravitational or centrifugal buoyant drag (D) External, drag & viscous

Description : Forces acting on a particle settling in fluid are __________ forces. (A) Gravitational & buoyant (B) Centrifugal & drag (C) Gravitational or centrifugal buoyant drag (D) External, drag & viscous

Last Answer : (C) Gravitational or centrifugal buoyant drag

Which of the following relationship is valid for the equilibrium position of the float in a Rotameter? (Where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float). (A) Df + Bf = Wf (B) Df = Bf + Wf (C) Df + Bf + Wf =0 (D) None of these

Description : Which of the following relationship is valid for the equilibrium position of the float in a Rotameter? (Where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float). (A) Df + Bf = Wf (B) Df = Bf + Wf (C) Df + Bf + Wf =0 (D) None of these

Last Answer : (A) Df + Bf = Wf

Pick up the correct statement from the following: (A) If ports are closed, the dry intake towers will not have any water (B) Even if ports are closed, the wet intake tower will have water filled up to reservoir level (C) No buoyant force acts on wet intake towers (D) All the above

Description : Pick up the correct statement from the following:  (A) If ports are closed, the dry intake towers will not have any water  (B) Even if ports are closed, the wet intake tower will have water ... to reservoir level  (C) No buoyant force acts on wet intake towers  (D) All the above 

Last Answer : (D) All the above 

Buoyant unit weight equals the saturated density (A) Multiplied by unit weight of water (B) Divided by unit weight of water (C) Plus unit weight of water (D) Minus unit weight of water

Description : Buoyant unit weight equals the saturated density (A) Multiplied by unit weight of water (B) Divided by unit weight of water (C) Plus unit weight of water (D) Minus unit weight of water

Last Answer : Answer: Option D

The horizontal component of buoyant force is (A) Negligible (B) Same as buoyant force (C) Zero (D) None of the above

Description : The horizontal component of buoyant force is (A) Negligible (B) Same as buoyant force (C) Zero (D) None of the above

Last Answer : Answer: Option C

The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid

Description : The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid

Last Answer : Answer: Option D

Buoyant force is (A) Resultant force acting on a floating body (B) Equal to the volume of liquid displaced (C) Force necessary to keep a body in equilibrium (D) The resultant force on a body due to the fluid surrounding it

Description : Buoyant force is (A) Resultant force acting on a floating body (B) Equal to the volume of liquid displaced (C) Force necessary to keep a body in equilibrium (D) The resultant force on a body due to the fluid surrounding it

Last Answer : Answer: Option D

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 line of action of the buoyant force acts through the Centroid of the (A) Submerged body (B) Volume of the floating body (C) Volume of the fluid vertically above the body (D) Displaced volume of the fluid

Description : The line of action of the buoyant force acts through the Centroid of the (A) Submerged body (B) Volume of the floating body (C) Volume of the fluid vertically above the body (D) Displaced volume of the fluid

Last Answer : Answer: Option D

Metacentre is the point of intersection of (A) Vertical upward force through e.g. of body and center line of body (B) Buoyant force and the center line of body (C) Midpoint between e.g. and center of buoyancy (D) All of the above

Description : Metacentre is the point of intersection of (A) Vertical upward force through e.g. of body and center line of body (B) Buoyant force and the center line of body (C) Midpoint between e.g. and center of buoyancy (D) All of the above

Last Answer : Answer: Option B

Buoyant force is (A) The resultant force acting on a floating body (B) The resultant force on a body due to the fluid surrounding it (C) Equal to the volume of liquid displaced (D) The force necessary to maintain equilibrium of a submerged body

Description : Buoyant force is (A) The resultant force acting on a floating body (B) The resultant force on a body due to the fluid surrounding it (C) Equal to the volume of liquid displaced (D) The force necessary to maintain equilibrium of a submerged body

Last Answer : Answer: Option B

Most fish do not sink in water because of the presence of (1) air sinuses (2) buoyant scales on the body (3) swim bladder (4) swimmerets

Description : Most fish do not sink in water because of the presence of (1) air sinuses (2) buoyant scales on the body (3) swim bladder (4) swimmerets

Last Answer : swim bladder