Physics
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Question

64 equal drops of water are falling through air with a steady velocity V subscript 0 , if the drops coalesce, what is their new velocity?

  1. 4V subscript 0
  2. 21 third
  3. 2V subscript 6
  4. 2 to the power of 1 third end exponentV subscript 0

The correct answer is: 4V subscript 0

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A steel ball of diameter 3.2 mm falls under gravity through an oil of density 920kgstraight m to the power of negative 3 end exponent and viscosity  1.64Nsstraight m to the power of negative 2 end exponent. The density of steel may be taken as7820kgm to the power of negative 3 end exponent What is the terminal velocity of the ball?

A steel ball of diameter 3.2 mm falls under gravity through an oil of density 920kgstraight m to the power of negative 3 end exponent and viscosity  1.64Nsstraight m to the power of negative 2 end exponent. The density of steel may be taken as7820kgm to the power of negative 3 end exponent What is the terminal velocity of the ball?

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A steel ball of diameter 3 mm falls through glycerine and covers a distance of 25 cm in  10s. The specific gravity of steel and glycerine are 7.8 and  1.26 respectively. The viscosity of glycerine is about......... pa"

A steel ball of diameter 3 mm falls through glycerine and covers a distance of 25 cm in  10s. The specific gravity of steel and glycerine are 7.8 and  1.26 respectively. The viscosity of glycerine is about......... pa"

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A boat of area  floating on the surface of a river is made to move horizontaly with a speed of  by applying a tangential force. If the river is  deep and the water in contact with the bed is stationary, what is the tangential force needed to keep the boat moving ? (viscosity of water 0.01 poise)

A boat of area  floating on the surface of a river is made to move horizontaly with a speed of  by applying a tangential force. If the river is  deep and the water in contact with the bed is stationary, what is the tangential force needed to keep the boat moving ? (viscosity of water 0.01 poise)

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Maths-

The slope of the tangent to the curve y equals 6 plus x minus x to the power of 2 end exponent at left parenthesis 2 , 4 right parenthesis is

The given curve is y = 6 + x + x2.
We have to find the slope tangent at point (2,4)
To find the slope we differentiate the curve w.r.t x.
table attributes columnalign left end attributes row cell y equals 6 plus x minus x squared end cell row cell fraction numerator d y over denominator d x end fraction equals 0 plus 1 minus 2 x end cell end table
Slope m = open parentheses fraction numerator d y over denominator d x end fraction close parentheses subscript left parenthesis 2 comma 4 right parenthesis end subscript
m = (1 - 2 × 2)
= 1 - 4
= -3
The slope of the tangent at given point is -3.

The slope of the tangent to the curve y equals 6 plus x minus x to the power of 2 end exponent at left parenthesis 2 , 4 right parenthesis is

Maths-General
The given curve is y = 6 + x + x2.
We have to find the slope tangent at point (2,4)
To find the slope we differentiate the curve w.r.t x.
table attributes columnalign left end attributes row cell y equals 6 plus x minus x squared end cell row cell fraction numerator d y over denominator d x end fraction equals 0 plus 1 minus 2 x end cell end table
Slope m = open parentheses fraction numerator d y over denominator d x end fraction close parentheses subscript left parenthesis 2 comma 4 right parenthesis end subscript
m = (1 - 2 × 2)
= 1 - 4
= -3
The slope of the tangent at given point is -3.
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The velocity of a small ball of mass m and density d to the power of 1when dropped in a container filled with glycerine becomes constants after sometime. What is the viscous force acting on the ball? (density of glycerin is d squared)

The velocity of a small ball of mass m and density d to the power of 1when dropped in a container filled with glycerine becomes constants after sometime. What is the viscous force acting on the ball? (density of glycerin is d squared)

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Complete the sentence If the height of a capillary is smaller than the height to which water should rise, then…..

Complete the sentence If the height of a capillary is smaller than the height to which water should rise, then…..

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By how much depth will the surface of a liquid be depressed in a glass tube of radius  0.2 mm if the angle of contact of the liquid is 135 to the power of 0 and the surface tension is  0.547Nm to the power of negative 1 end exponent? (Density of the liquid isk g m to the power of negative 3 end exponent)

By how much depth will the surface of a liquid be depressed in a glass tube of radius  0.2 mm if the angle of contact of the liquid is 135 to the power of 0 and the surface tension is  0.547Nm to the power of negative 1 end exponent? (Density of the liquid isk g m to the power of negative 3 end exponent)

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A spherical soap bubble of radius 2 cm attached to the outside of a spherical bubble of radius 4 cm . Then what is the radius of the common surface?

A spherical soap bubble of radius 2 cm attached to the outside of a spherical bubble of radius 4 cm . Then what is the radius of the common surface?

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amount of energy evolved when eight droplets of mercury ( surface tension 0.55Nm to the power of 1  ) of radius  each combine into one drop is .......

amount of energy evolved when eight droplets of mercury ( surface tension 0.55Nm to the power of 1  ) of radius  each combine into one drop is .......

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In a Searle's experiment, the diameter of the wire as measured by a screw gauge of least count 0.1.m, is 110.0 cm, When a weight of 50 N is suspended from the wire, the extension is measured to 0.125 cm by a micrometer of least count 0.001 cmthe maximum error in the measurement of Young's modulus of the material of the wire is....N/m2?

In a Searle's experiment, the diameter of the wire as measured by a screw gauge of least count 0.1.m, is 110.0 cm, When a weight of 50 N is suspended from the wire, the extension is measured to 0.125 cm by a micrometer of least count 0.001 cmthe maximum error in the measurement of Young's modulus of the material of the wire is....N/m2?

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The compound is known by which of the following name ?

The compound is known by which of the following name ?

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The IUPAC name of the compound
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The IUPAC name of the compound
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The IUPAC name of the compound
is :

The IUPAC name of the compound
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The IUPAC name of the given compound
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