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Oksana_A [137]
3 years ago
11

Which statement is true?

Physics
1 answer:
vivado [14]3 years ago
4 0

Answer:

The speed of sound in air is not affected by the temperature

Explanation:

It just isn't™

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In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force can cause an object with mass to change its velocity, i.e., to accelerate, or a flexible object to deform, or both.

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An electron is located on a pinpoint having a diameter of 3.52 µm. What is the minimum uncertainty in the speed of the electron?
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Explanation:

It is given that,

An electron is located on a pinpoint having a diameter of 3.52 µm, \Delta x=3.52\times 10^{-6}\ m

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\Delta p.\Delta x \geq \dfrac{h}{4\pi}

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\Delta v \geq \dfrac{6.67\times 10^{-34}}{4\pi 3.52\times 10^{-6}\times 9.1\times 10^{-31}}

\Delta v\geq 16.57\ m/s

So, the minimum uncertainty in the speed of the electron is greater than 16.57 m/s. Hence, this is the required solution.

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The contact force that acts on objects in a liquid or gas and allows objects to float is called
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<span>The contact force that acts on objects in a liquid or gas and allows objects to float is called    </span>Buoyancy.
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