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Physics-

General

Easy

Question

A spherical drop of coater has radius 1 mm if surface tension of context is $70 cross times 10 to the power of negative 3 end exponent straight N divided by straight m$ difference of pressures betweca inside and outside of the spherical drop is

$35 \frac{N}{m^{2}}$
$70 \frac{N}{m^{2}}$
$140 \frac{N}{m^{2}}$
zero

The correct answer is: $140 straight N over straight m squared$

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