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marishachu [46]
3 years ago
15

What is the difference between Mass and Weight ?​

Physics
2 answers:
oksano4ka [1.4K]3 years ago
8 0

Mass is a measurement of an object's tendency to resist changing its state of motion, known as inertia.

<u>Weight</u>, on the other hand, is a measure of the amount of downwards force that gravity exerts on an object. This force increases with the object's mass: the more inertia it has, the harder gravity pulls.

slega [8]3 years ago
6 0

Answer:

<u>MASS </u> — <em>A</em><em> coherent, typically large body of matter with no definite shape.</em>

<u>WEIGHT</u><u> </u><u>—</u><u> </u><em>A</em><em> body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.</em>

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3 years ago
A sphere of radius R contains charge Q spread uniformly throughout its volume. Find an expression for the electrostatic energy c
tensa zangetsu [6.8K]

Answer:

E = \frac{3kQ^2}{5R}

Explanation:

Let the sphere is uniformly charge to radius "r" and due to this charged sphere the electric potential on its surface is given as

V = \frac{kq}{r}

now we can say that

q = \frac{Q}{\frac{4}{3}\pi R^3} (\frac{4}{3}\pi r^3)

q = \frac{Qr^3}{R^3}

now electric potential is given as

V = \frac{k\frac{Qr^3}{R^3}}{r}

V = \frac{kQr^2}{R^3}

now work done to bring a small charge from infinite to the surface of this sphere is given as

dW = V dq

dW = \frac{kQr^2}{R^3} dq

here we know that

dq = \frac{3Qr^2dr}{R^3}

now the total energy of the sphere is given as

E = \int dW

E = \int_0^R  \frac{kQr^2}{R^3} (\frac{3Qr^2dr}{R^3})

E = \frac{3kQ^2}{R^6} (\frac{R^5}{5} - 0)

E = \frac{3kQ^2}{5R}

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4 years ago
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Answer:

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Explanation:

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shusha [124]

Answer:

Explanation:

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