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2 years ago

A____test instrument is a device that is installed in a process or at a bench to continually measure and display quantities.

1 answer:

4 0

The device that is installed in a process or at a bench to continually measure and display quantities is a permanent test instrument.

<h3>What is a measuring instrument?</h3>

A tool for measuring a physical quantity is a measuring instrument. Measurement, in the physical sciences, quality control, and engineering, is the process of gathering and contrasting the physical amounts of things that actually happen in the real world. As units, pre-defined standard things and occurrences are used, and the measuring procedure yields a number that connects the subject-matter under investigation to the used unit of measurement. These numerical relationships are attained through the employment of measuring devices and formal test methodologies that specify the device's use. The instrument error and measurement uncertainty that affect all measuring devices varies in severity. From basic tools like stopwatches and rulers to electron microscopes and particle accelerators, these instruments can be used for various purposes.

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A ray moving in plastic at 62.9 deg enters water, where it bends to 70.9 deg. What is the index of refraction of the plastic?

DedPeter [7]

Answer:

refractive index of plastic is 1.42

Explanation:

When light ray enters from one medium to other medium then due to transition of light it bends away or towards the normal, this phenomenon is known as refraction of light

So here we know that

$n_1 sin i = n_2 sin r$

here we have

$n_2 = \frac{4}{3}$

$i = 62.9^o$

$r = 70.9^o$

now we have

$n_1 sin62.9 = (\frac{4}{3}) sin70.9$

$n_1 = 1.42$

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3 years ago

What is the difference between alternating current and direct current?

Oksanka [162]

The answer is A. Alternating current regularly reverses direction. Direct current flows in only one direction.

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4 years ago

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The main functions of the skin are:

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Answer:To protect the human body from foreign bodies from the outside environment.

Explanation:

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4 years ago

Quantity a of an ideal gas is at absolute temperature t, and a second quantity b of the same gas is at absolute temperature 2t.

olga_2 [115]

Answer: If both gases undergo the same entropy then more heat is added to gas a because the entropy of the gas a is less than the entropy of the gas b.

Explanation:

Entropy is defined as the degree of randomness. When the temperature of the gas increases then the entropy of gas also increases.

In the given problem, Quantity a of an ideal gas is at absolute temperature t, and a second quantity b of the same gas is at absolute temperature 2t.

Heat is added to each gas, and both gases are allowed to expand isothermally. It means that the volume is constant during this process.

If both gases undergo the same entropy then more heat is added to gas a because the entropy of the gas a is less than the entropy of the gas b. If the heat is added then there will be more entropy.

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3 years ago