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3 years ago

Four students measure the mass of a standard mass that has an accepted value of 150.0 g. They post their results in a table.

Physics

1 answer:

Eddi Din [679]3 years ago

4 0

Explanation:

This problem seeks to ensure that the student comprehends the meaning of precision and accuracy.

These two key terms are used to express how reliable experimental values obtained are.

Precision is the ability to consistently reproduce a result.
Accuracy is the nearness of the measure value to the true value.
The different between the measured and true values gives the error in the result.

In the problem given, the most accurate reading would be one that has value close to the standard mass of 150g. Any student that reports this value would be reported as accurate.

The precise reading would be for the student that is able to repeatedly produce the same kind of values. This is irrespective of whether the values are close to the true value or not.

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2 years ago

It is known that birds can detect the earth's magnetic field, but the mechanism of how they do this is not known. It has been su

Lubov Fominskaja [6]

Answer:

A) 0.50 mV

Explanation:

In this problem, we can think the wings of the bird as a metal rod moving across a magnetic field. So, and emf will be induced into the wings of the bird, according to the formula:

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3 years ago

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attashe74 [19]

Answer:

0.125 volts

Explanation:

The induced emf can be sufficient to stimulate neuronal activity.

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$\epsilon=-\dfrac{d\phi}{dt}$

Where

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So,

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posledela

Answer:

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Explanation:

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