What kind of scientist investigation involve making observations

Answers

Answer 1
Answer: Scientists need to make observations when measuring growth rates of different organisms, when observing mating rituals of animals, and when determining characteristics of new substances. These are but a few examples.
Answer 2
Answer: When you study animals.

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When describing a maritime polar air mass, you might say it formed over _____ and is _____.

Answers

The correct answer for the question that is being presented above is this one: "an air mass that formed over land. it is cold and dry." When describing a maritime polar air mass, you might say it formed over land and is cold and dry. It's temperature can range from around freezing to near 20 degrees Celsius

Answer:

water, cold and moist

Explanation:

I just did a test on it and got it wrong using land, cold and dry and got it right using this anwer

A geologist finds a layer of rock that is coarse-grained granite.What type of rock did the geologist find?


A.extrusive igneous rock


B.intrusive igneous rock


C.foliated metamorphic rock


D.nonfoliated metamorphic rock

Answers

The right answer for the question that is being asked and shown above is that: "B.intrusive igneous rock." A geologist finds a layer of rock that is coarse-grained granite. The type of rock that the geologist find is an intrusive igneous rock.

A wave front has the form of a

Answers

Your answer is "surface of a sphere"

Hope this helps.

An arrow is fired horizontally at a target that is 40 m away (horizontal d). The arrow drops 0.5 m before striking the target. With what velocity is the arrow fired (what is the horizontal vi)?

Answers

Answer:

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Explanation:

Which of the following is a chemical change?a. ice melting
b. ice being carved
c. water boiling
d. water breaking down into hydrogen and oxygen

Answers

water breaking down into hydrogen and oxygen

Explain Nyquist Theorem?

Answers

Final answer:

The Nyquist Theorem is a principle in digital communications specifying that a signal must be sampled at least twice its highest frequency in order to accurately reproduce the original analog signal. An example is digitizing an audio signal with a highest frequency of 20 kHz, which needs to be sampled at a minimum rate of 40 kHz.

Explanation:

The Nyquist Theorem, also known as Nyquist-Shannon sampling theorem, is a principle that engineers follow when digitizing analog signals. This theorem is fundamental for understanding how digital audio technology works. It states that a signal must be sampled at least twice its highest frequency in order to accurately reproduce the original analog signal. In simpler terms, it's a guideline for converting a continuous analog wave into a series of discrete digital samples.

Let's take an example. Suppose you have an audio signal with a maximum frequency of 20 kHz. According to the Nyquist Theorem, you need to sample that audio signal at a rate of at least 2 (20 kHz) = 40 kHz to accurately digitize it. This is why the standard sample rate for audio CDs is 44.1 kHz (slightly higher than the 40 kHz rate determined by the Nyquist Theorem).

Learn more about Nyquist Theorem here:

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