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Physics-

General

Easy

Question

The cylindrical tube of as pray pump has radius, R, o neend of which has n fine holes, each of radius r. If the speed of the liquid in the tube is V, the speed of the ejection of the liquid through the hole sis :

$\frac{{V R}^{2}}{{n r}^{2}}$
$\frac{{V R}^{2}}{n^{3} r^{2}}$
$\frac{V^{2} R}{n r}$
$\frac{{V R}^{2}}{n^{2} r^{2}}$

The correct answer is: $fraction numerator V R to the power of 2 end exponent over denominator n r to the power of 2 end exponent end fraction$

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A vessel with water is place don a weighing pan and it reads 600g.Now a ball ofmass40ganddensity0.80gcm-3issunkintothewater with a p in of negligible volume, as shown in figure keeping it sunk. The weight in g pan will show are a ding

A vessel with water is place don a weighing pan and it reads 600g.Now a ball ofmass40ganddensity0.80gcm-3issunkintothewater with a p in of negligible volume, as shown in figure keeping it sunk. The weight in g pan will show are a ding

Physics-General

$4 s i n space 27 to the power of 0 equals$

$4 s i n space 27 to the power of 0 equals$

if $A equals 340 to the power of ring operator$ then $square root of 1 minus sin space A end root minus square root of 1 plus sin space A end root equals$

if $A equals 340 to the power of ring operator$ then $square root of 1 minus sin space A end root minus square root of 1 plus sin space A end root equals$

parallel

$2 sin space A over 2 equals square root of 1 plus sin space A end root minus square root of 1 minus sin space A end root text then end text$

$2 sin space A over 2 equals square root of 1 plus sin space A end root minus square root of 1 minus sin space A end root text then end text$

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$I f space 2 cos space A divided by 2 equals √ left parenthesis 1 plus sin space A right parenthesis plus √ left parenthesis 1 minus sin space A right parenthesis comma space t h e n space A divided by 2 space l i e s space b e t w e e n$

$I f space 2 sin space A divided by 2 equals √ left parenthesis 1 plus sin space A right parenthesis plus √ left parenthesis 1 minus sin space A right parenthesis comma space t h e n space A divided by 2 space l i e s space b e t w e e n$

$I f space 2 sin space A divided by 2 equals √ left parenthesis 1 plus sin space A right parenthesis plus √ left parenthesis 1 minus sin space A right parenthesis comma space t h e n space A divided by 2 space l i e s space b e t w e e n$

parallel

If $2 cos space A over 2 equals square root of 1 plus sin space A end root minus square root of 1 minus sin space A end root$ , then

If $2 cos space A over 2 equals square root of 1 plus sin space A end root minus square root of 1 minus sin space A end root$ , then

Let $omega$ = – $fraction numerator 1 over denominator 2 end fraction plus i fraction numerator square root of 3 over denominator 2 end fraction$ . Then the value of the determinant $open vertical bar table row 1 1 1 row 1 cell negative 1 minus omega to the power of 2 end exponent end cell cell omega to the power of 2 end exponent end cell row 1 cell omega to the power of 2 end exponent end cell cell omega to the power of 4 end exponent end cell end table close vertical bar$ is

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If $omega$ ( $not equal to$ 1) is a cube root of unity, then $open vertical bar table row 1 cell 1 plus i plus omega to the power of 2 end exponent end cell cell omega to the power of 2 end exponent end cell row cell 1 minus i end cell cell negative 1 end cell cell omega to the power of 2 end exponent minus 1 end cell row cell negative i end cell cell negative i plus omega minus 1 end cell cell negative 1 end cell end table close vertical bar$ equals

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parallel

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parallel

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parallel

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