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Serjik [45]
3 years ago
9

The sun is bigger than the Moon, but they appear to be the same size in the sky when you look at them from Earth. Why?

Chemistry
1 answer:
pogonyaev3 years ago
8 0

Answer:

The moon is closer to Earth than the sun! (Last one)

Explanation:

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Select a system in the human body and explain how a breakdown in the digestive system might affect the system you just chose.\
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The circulatory system works with the digestive system. Once the food is digested, the circulatory systems absorb and uses the nutrients in the food. If the digestive system were to break down, the circulatory will not have the nutrients it needs to sufficiently run the body. 
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3 years ago
Density is the ratio of a sample's mass to its volume. A bar of lead has a mass of 115.2 g. When it is submerged in 25.0 mL of w
Margarita [4]

Answer:

$10.97 \ g/cm^3$

Explanation:

Given :

Mass of a bar of lead = 115.2 g

Initial water level $\text{in the graduated cylinder}$ = 25 mL

Final water level $\text{in the graduated cylinder}$ = 35.5 mL

Difference in the water level = 35.5 - 25

                                               = 10.5 mL

                                               = 10.5 \ cm^3

We know that when a body is submerged in water, it displaces its own volume of water.

Therefore, the volume of the lead bar = volume of the water displaced = 10.5 mL  = 10.5 \ cm^3

We know that mathematically, density is the ratio of mass of body to its volume.

Density of the lead bar is given by :

$\rho =\frac{\text{mass}}{\text{volume}}$

$\rho =\frac{\text{115.2 g}}{\text{10.5 cm}^3}$

  = $10.97 \ g/cm^3$

3 0
3 years ago
What is the part of an experiment that is not being tested and is used for comparison
STALIN [3.7K]
The controlled variable, I think.
7 0
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How many atoms does Zirconium have ?
WINSTONCH [101]

Answer:

Name Zirconium

Atomic Number 40

Atomic Mass 91.224 atomic mass units

Number of Protons 40

Number of Neutrons 51

Explanation:

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3 years ago
How can the system restore equilibrium when disturbed (forward or reverse)
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It will be forward okay

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