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qwelly [4]
2 years ago
5

You find a rock sample with radioactive atoms present. 25% of the original radioactive atoms were present, how many half lives

have passed
Biology
1 answer:
diamong [38]2 years ago
5 0

Answer:

Im literally taking a test that my teacher made and i have no idea what the answer is

Explanation:

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A neutron star collapses into a black hole because of the force of (fusion,gravity)
stealth61 [152]
Gravity

Neutron stars are the most extreme and fascinating objects known to exist in our universe: Such a star has a mass that is up to twice that of the sun but a radius of only a dozen kilometers: hence it has an enormous density, thousands of billions of times that of the densest element on Earth. An important property of neutron stars, distinguishing them from normal stars, is that their mass cannot grow without bound. Indeed, if a nonrotating star increases its mass, also its density will increase. Normally this will lead to a new equilibrium and the star can live stably in this state for thousands of years. This process, however, cannot repeat indefinitely and the accreting star will reach a mass above which no physical pressure will prevent it from collapsing to a black hole. The critical mass when this happens is called the "maximum mass" and represents an upper limit to the mass that a nonrotating neutron star can be.

However, once the maximum mass is reached, the star also has an alternative to the collapse: it can rotate. A rotating star, in fact, can support a mass larger than if it was nonrotating, simply because the additional centrifugal force can help balance the gravitational force. Also in this case, however, the star cannot be arbitrarily massive because an increase in mass must be accompanied by an increase in the rotation and there is a limit to how fast a star can rotate before breaking apart. Hence, for any neutron star, there is an absolute maximum mass and is given by the largest mass of the fastest-spinning model.
7 0
3 years ago
How and why do organisms interact with one another?
dedylja [7]

Answer:

It's in their makeup to interact

Explanation

They need to interact to survive, to exist, to reproduce!

8 0
2 years ago
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Select the reasons why the term 'prokaryote' can be problematic.
miv72 [106K]

Answer:

__ It implies that prokaryotes existed before eukaryotes, and

__ It implies that eukaryotes evolved from prokaryotes.

Explanation:

The prefix pro- can mean "before". By using the term prokaryote one can tend to think that procaryotes preceded eukaryotes.

Preceed as existed before them, or as an evolutionary point of view.

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comparing and contrasting of DNA

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