CHEMISTRY MIDDLE SCHOOL

(Fill in the blanks)The movement of water into and out of cells is very _____. Cells need water to ____ properly.

Answers

Answer 1
Answer:

Answer:

important, function

Explanation:

Hope this helps!

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Two objects attract each other with a gravitational force of 25 newtons from a given distance. If the distance between the two objects is reduced by a factor of 5, what is the changed force of attraction between them?

Answers

Answer:

  • The changed force of attraction between the two objects is 625 N.

Explanation:

The universal law of attraction states that the gravitational attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

The mathematical expression is:

  • F = G m₁ m₂ / d², where

  • G is the gravitational constant,
  • m₁ and m₂ are the respctive masses of the two objects, and
  • d = distance between the two objects.

Then, if the masses m₁ and m₂ remain unchanged and the distance (on the denominator) is reduced by a factor of 5, the 1/d² = 1/(1/5)² = 5² = 25, which means that the force will be multiplied by 25.

So, 25 N × 25 = 625 N which is the changed force of attraction between them.

Answer:

jbjbbbbb

Explanation:

Why the water drops were difficult to split apart but easy to join together?

Answers

They have large cohesion: the attraction between particles of the same material.

Which describes how a turbine works to produce energy for electricity? A.
Energy from various energy sources, such as wind or from burning fossil fuels, is used to spin the blades of the turbine. The turbine then powers a generator, which produces electricity.

B.
Energy from various energy sources, such as wind or from burning fossil fuels, is used to spin the blades of the turbine, which produces electricity.

C.
The turbine produces energy from various energy sources like wind or burning fossil fuels to drive the generator to make electricity.

D.
The generator produces energy from various energy sources like wind or burning fossil fuels to drive the turbine to make electricity.

Answers

A. The wind power moves the turbine which, in turn, produces electricity.

When exercising what happens to the heart rate and blood movement?

Answers

Your heart rate increases and your blood pressure increases, causing blood to flow around your body faster.

What is 29383.0398
to the nearest hundredth?

Answers

29383.04 rounded to the nearest hundredth

Given the balanced equation representing a reaction:O2 --> O + O
What occurs during this reaction?
(1) Energy is absorbed as bonds are broken.

(2) Energy is absorbed as bonds are formed.

(3) Energy is released as bonds are broken.

(4) Energy is released as bonds arc formed.

Answers

In the equation given above, a molecule of oxygen breaks into two atoms of oxygen showing that the bond is being broken. When bonds break, energy is absorbed and when bonds are formed energy is released. Hence, the answer to this question is (1).
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