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Verizon [17]
3 years ago
9

Which of these units are most commonly found/used in science?

Biology
2 answers:
Kay [80]3 years ago
5 0

Answer:

Meters/grams are the most common.

Explanation:

Grams are very exact and meters are also common to use.

Dima020 [189]3 years ago
5 0
Meters/grams or m/g

only america uses imperial, the rest of the world uses metric
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What structure of the sarcomere shortens during muscle contraction?
LiRa [457]

Answer:

The Z lines and H- zone shortens during the muscle contraction.

Explanation:

Sarcomere is the area between the two Z lines. The Z- lines are present in the centre of I - band and H - zone is present in the A - band. The actin filaments which are thin filaments present in I- band and contracts, slide over the myosin filament during contraction.

The I - band, H- zones are became shortens as they are thin than the A- band. It is anisotropic band having thick myosin filaments. They are not flexible and remain in its constant shape during the muscle contraction.

After the muscle contraction, the A- band and the H- zone comes to their original shape. In other words, the sarcomere shortens and comes back during muscle contraction, and relaxation.

3 0
3 years ago
Rusting is a chemical reaction between iron and oxygen. Over time, the mass of a rusting nail
marshall27 [118]

Answer: Yes this chemical reaction obeys the laws of physics. Its very simple, let me explain.

Explanation:

When Iron(Fe) oxidizes it gains three oxygen atoms so it reacts to form Fe2O3 so it becomes bigger or explands. Its also sometimes called "oxide jacking".

4 0
3 years ago
Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of
Elodia [21]

Answer:

\boxed {\boxed {\sf 121.905 \ J  }}

Explanation:

We are asked to find the energy given mass, specific heat, and change in temperature. Therefore, we must use this formula;

q= mc \Delta T

The mass is 15 grams and the specific heat is 0.129 J/(g×°C). Let's calculate the change in temperature.

  • ΔT= final temperature - initial temperature
  • ΔT= 85 °C- 22°C = 63°C

Now we know all the values:

m= 15 \ g \ \\c= 0.129 \ J / (g* \textdegree C) \\\Delta T= 63 \ \textdegree C

Substitue the values into the formula.

q= (15 \ g)( 0.129 \ J / (g* \textdegree C)) ( 63 \ \textdegree C)

Multiply the first numbers together. The grams will cancel.

q= (1.935 \ J/ \textdegree C) ( 63 \ \textdegree C)

Multiply again, this time the degrees Celsius cancels.

q= 121.905 \ J

<u>121.905 Joules</u> are required.

5 0
2 years ago
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Which of the following supplies a rich network of blood vessels that provides nutrients and oxygen to the superficial tissues of
horrorfan [7]
Red blood cells, I need a little bit more details to fulky know, please respond to me thanks
7 0
3 years ago
PLEASE HELP I'LL PAY YOU ON MY PAY PAL OMG!!! AND I'LL GIVE A BRAINLY
pav-90 [236]

Answer: They lead to increased levels of carbon dioxide and other greenhouse gases in the atmosphere which causes the greenhouse effect.

Renewable resource: Sunlight, water, wind,

Norenewable: coal, natural gas, oil

Since fossil fuels are located all over the world, it makes it much easier to create electricity from them than things that are hard to come by.

Explanation:

Hope this helps

5 0
3 years ago
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