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Helga [31]
3 years ago
11

What is atom.......... ?​

Physics
1 answer:
aliina [53]3 years ago
8 0

Answer: the basic unit of a chemical element.

Explanation:

An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.

hope this helps

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A student measures the mass of a 1.0 kg standard bar. He obtains measurements of 0.77 kg, 0.78 kg, and 0.79 kg. Which describes
Vadim26 [7]

Complete question

A student measures the mass of a 1.0 kg standard bar. He obtains measurements of 0.77 kg, 0.78 kg, and 0.79 kg. Which describes his measurements

a)precise but not accurate

b)accurate but not precise

c)neither precise nor accurate

d)both precise and accurate

Answer:

The measurement is precise but not accurate

Explanation:

A measurement can either be precise or accurate.

  • A Precise measurement describes how close the measured values are to each other.
  • An accurate measurement describes how close a measured value is to the true value.

In this question, the measured values (0.77 kg, 0.78 kg and 0.79 kg) are far from the true value (1.0 kg), therefore the measurement is not accurate.

However, the measured values (0.77 kg, 0.78 kg and 0.79 kg) are close to each other, therefore the measurement is precise.

Therefore the correct option is 'a' the measurement is precise but not accurate

4 0
3 years ago
What condition is necessary for two bodies that are in physical contact with each other to be in thermal equilibrium?
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<span>for two bodies that are in physical contact with each other to be in thermal equilibrium the condition is that they require the same temperature and they no longer effect each other temperature
hope it helps</span>
3 0
3 years ago
Explain the two types of interference that can happen when two sound waves meet
stepladder [879]

==> Their sum is a wave with amplitude greater than either of

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Explanation:

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