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2 years ago

8

Once all the hydrogen is gone, the star starts to collapse. if it collapses enough, what fuel will now be used? what color will

it burn?

1 answer:

romanna [79]2 years ago

7 0

It will burn helium and turn dark orange. Eventually, it is all iron and cannot burn that, so it becomes dark. Hope this helps!!!

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The density of table sugar is 1.59 g/cm3. What is the volume of 7.85 g of sugar?

Likurg_2 [28]

$\frac{7.85g }{1.59 \frac{g}{ cm^{3} } }$ = 4.937 $cm^{3}$

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2 years ago

a cannonball is fired with a speed of 76 m/s from the top of a cliff. It strikes the plane below with a speed of 89 m/s. if we n

RSB [31]

Answer:

we use the formula,

$v {}^{2} = u {}^{2} + 2gh$

$89 {}^{2} = 76 {}^{2} + 2(10)h$

$h = (89 {}^{2} - 76 {}^{2} ) \div 20$

h= 107 m

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2 years ago

Which orbit has the highest energy?<br> n = 1<br> n = 2<br> n = 3

PIT_PIT [208]

Answer:

3

Explanation:

The closer an orbit is to the nucleus the fewer energy

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2 years ago

A converging lens can be defined as __________

Kobotan [32]

Answer:

a lens that causes parallel light rays to separate from each other

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2 years ago

FIND THE WEIGHT OF A 80 KG MAN ON THE SURFACE OF MOON? WHAT SHOULD BE HISS MASS ON THE EARTH AND ON THE MOON? (ge = 9.8 m/s2 ; g

elena55 [62]

Weight = (mass) x (acceleration of gravity at the place where the mass is) .

Man's mass = 80 kg

His weight on Earth = (80 kg) x (9.8 m/s²) = 784 newtons (about 176 pounds)

His weight on the Moon = (80 kg) x (1.63 m/s²) = <em>130.4 newtons</em> (about 29.2 pounds)

His mass is <em>80 kg</em>. Mass is the thing about him that doesn't change.
He has the same mass on the Earth, on the Moon, or anywhere.

8 0

2 years ago