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Alinara [238K]
2 years ago
14

What is a scientific theory?

Biology
2 answers:
pychu [463]2 years ago
7 0

Answer: scientific theory is an explanation of observations or events that is based on knowledge gained from many observations or events.

Zinaida [17]2 years ago
4 0

Answer:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.

Explanation:

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Consider the mammalian heart. why is the muscular wall of the left ventricle thicker than that of the right ventricle? the left
Julli [10]
The left ventricle must contract with more force in order to send blood to the body's extremities

I hope this helps! I'm happy to answer any other questions you might have :)

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a sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wa
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2 years ago
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Explain why a hydrogen atom can become either an ion or a part of molecule?
NikAS [45]

<span>If it loses that 1 electron (0 electrons, 1 proton, 1 neutron) it become an ion that is positively charge because it has more protons than electrons. [Ignore the neutrons] </span>

<span>If it gains an electron (2 electrons, 1 proton, 1 neutron) it becomes an ion that is negatively charge because it has more electrons than protons </span>

<span>A molecule - when 2 or more "different" elements combine or when 2 or more of the "same" elements combine </span>

<span>1 proton 1 electron <----- that is considered to be neutral </span>

<span>3 protons, 3 electrons <----- neutral </span>

<span>5 protons 5 electrons <----- neutral </span>

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<span>5 protons, 8 electrons <--- negative ion [more electrons than protons] </span>
8 0
3 years ago
Hello?? Can anyone help me??! PLEASE
kolezko [41]

Answer:

The temperature is staying the same. In the graph when it shows solid/liquid and liquid/gas, the temperature stays the same until it changes. This is because it reached it's melting point/vaporizing point. For example, a solid gets heated up, it then reaches it's melting point but it can't go higher than that because it isn't fully a liquid yet, once it's a liquid it will then continue to rise in temperature.

I don't think I put enough detail into that explanation but I hope this helps your problem.

4 0
2 years ago
I NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!
brilliants [131]

Answer:

66.7m/s²

Explanation:

initial velocity(V)=54m/s

Final velocity(U)=4m/s²

Time taken(t)= 0.75 seconds

Acceleration is unknown

To find the acceleration we use this formula

a=v-u/t

a=54-4/0.75

a=50/0.75

a=66.666666

since it is acceleration we use the symbol m/s² after approximating to 1 decimal place

a=66.7m/s²

rate The answer as brainliest

4 0
1 year ago
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