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3 years ago

Assume the objects listed below have the same velocity. Which object has the most kinetic energy?

Physics

2 answers:

algol [13]3 years ago

6 0

KE = (1/2) (mass) (speed²)

If 2 objects have the same speed, then <em>the one with more mass</em> has the greater kinetic energy.

No objects are listed below, so this is as far as I can take you. Just examine the list and look for the object with the most mass.

lakkis [162]3 years ago

6 0

Answer:

The plane has the most mass

Explanation:

just answered it on E2020

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3 years ago

A spherical drop of water carrying a charge of 43 pC has a potential of 540 V at its surface (with V = 0 at infinity). (a) What

almond37 [142]

Explanation:

Given that,

Charge on a spherical drop of water is 43 pC

The potential at its surface is 540 V

(a) The electric potential on the surface is given by :

$V=\dfrac{kq}{r}$

r is the radius of the drop

$r=\dfrac{kq}{V}\\\\r=\dfrac{9\times 10^9\times 43\times 10^{-12}}{540}\\\\r=7.17\times 10^{-4}\ m$

(b) Let R is the radius of the spherical drop, when two such drops of the same charge and radius combine to form a single spherical drop. ATQ,

$\dfrac{4}{3}\pi r^3+\dfrac{4}{3}\pi r^3=\dfrac{4}{3}\pi R^3\\\\2r^3=R^3\\\\R=2^{1/3} r$

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