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antiseptic1488 [7]
3 years ago
5

Cindy saw her mother heating a wet pan on the stove. As the pan got hotter, the water on the outside began to dry. Why?

Physics
1 answer:
dlinn [17]3 years ago
7 0

Answer:

As the temperature of materials increase, the objects find a phenomenon called change of phase.

This means that if you give enough heat to a liquid, this can change of state from liquid state to gas state (the water evaporates)

So the water in the pan reaches the evaporation temperature (around 100°C) and it starts to evaporate, this is why the water on the outside begins to "dry"

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An electron moves at 2.80 ×106 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.
d1i1m1o1n [39]

Answer:

a = 3.73*10^{16}m/s^2

Explanation:

The magnetic force is given by the equation,

\vec{F}_{magnetic} = q (\vec{v}X\vec{B})

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Where \theta is the angle between velocity vector and the magnetic field,

That angle is 90°.

We know as well that

F=ma, replacing the mass and the acceleration in our previous equation we have

ma = qvBsin\theta

a= \frac{qvBsin\theta}{m}

Our values are,

q= 1.6*10^{-19}c

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B=7.6*10^{-2}T

m=9.11*10^{-31}kg

Substituting,

a = \frac{(1.6*10^{-19})(2.8*10^6)(7.6*10^{-2})}{9.11*10^{-31}}

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