As an Astronaut goes out into space, her mass REMAINS THE SAME and her weight DECREASES.
When one travels away from the earth surface, one's mass remains the same but the weight decreases as the gravitation pull decreases.
The experience of weight on earth is as a result of the counteracting forces acting one's body and the ground. When one is in the space, this counteracting force is removed because the ground is no longer pushing back on one's body. Thus, one's weight will decrease in space because gravitational pull is lower above the earth's surface.

3 0

3 years ago

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How many microliters of original sample are required to produce a final dilution of 10-3 in a total volume of 1,000 mL?

PIT_PIT [208]

Answer:

$10^{9}\ \mu L$

Explanation:

Considering

$Molarity_{1}\times Volume_{1}=Molarity_{2}\times Volume_{2}$

Given that:

$Molarity_{1}=1.0\ M$ (let)

$Volume_{1}=1000\ mL$

$Volume_{2}=?$

$Molarity_{2}=0.001\ M$

So,

$1.0\times 1000=0.001\times Volume_{2}$

Volume = 10⁶ mL

$1\ mL=10^{3}\ \mu L$

So, Volume = $10^{9}\ \mu L$

3 0

3 years ago

Explain three cause and effect relationships between the human activities and the measurable changes in the Earth system represe

antiseptic1488 [7]

Answer:

Humans are gradually altering the climate and the earth's temperature through burning fossil fuels, destroying forests, and rearing animals.

Explanation:

This significantly increases the amount of greenhouse gases already present in the atmosphere, increasing the greenhouse effect and contributing to global warming.

Climate change is mostly caused by the greenhouse effect. Some gases in the Earth's atmosphere act as greenhouse glass, trapping heat from the sun and preventing it from escaping into space, causing global warming.

Hope it helps;

4 0

2 years ago