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suter [353]
2 years ago
11

How much physical activity should an adult have each week?

Physics
1 answer:
sergiy2304 [10]2 years ago
8 0
I believe the correct answer is c
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4. All electromagnetic radiation moves at the speed of ________________, which is _________________ m/s.
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All electromagnetic radiation, regardless of its wavelength, travels at what is called the "speed of light". In a vacuum, it is measured as 299,792,458 meters per second. 3.0 x 108 meters per second.

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3 years ago
Why it is easier to lift a small stone but harder to lift heavy one on the surface of Earth​
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3 years ago
Pure science is best defined as the what?
WINSTONCH [101]

Answer:

A) continuing search for new knowledge

Explanation:

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6 0
2 years ago
Read 2 more answers
A characteristic of matter that can be observed without changing the identity of the matter is a_______________.
ludmilkaskok [199]

Answer: A characteristic of matter that can be observed without changing the identity of the matter is a physical property.

Explanation:

A property that does not bring any change in chemical composition of a substance are known as physical properties.

For example, shape, size, mass, volume, density, etc of a substance are all physical properties.

Whereas a property that changes chemical composition of a substance is known as chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

A chemical change cannot be reverted back.

Therefore, we can conclude that a characteristic of matter that can be observed without changing the identity of the matter is a physical property.

3 0
3 years ago
Which of the following correctly pairs the subatomic particle with its charge?
Margarita [4]
The answer that’s your looking for is C
4 0
3 years ago
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