What piece of apparatus is the ink mixture put in

Why doesn't the universe collapse under the force of gravity? Please tell where you got the information from and if it is correc

Sergio [31]

First, this would go under physics.

Gravity is a relatively weak force and depends on the mass and distance of two objects. Even between insects, the force of gravity exists. However, it is not strong enough to be present because the two masses are too small and too far away.

Here is a Harvard question that is similar.
https://www.cfa.harvard.edu/seuforum/faq.htm
If the universe started out so dense, why didn't it collapse into a black hole?
A large enough clump of matter will collapse to form a black hole, but ONLY if it is surrounded by (relatively) empty space. During the Big Bang, there WAS NO empty space: ALL of space was filled more or less uniformly with matter and energy; there was no "center of attraction" around which matter could coalesce. Under these circumstances, a cosmic-scale black hole will not form (and lucky for us!).

8 0

3 years ago

Read 2 more answers

Dry ice will go directly from a solid to a gas at room temperature. Going directly from a solid to a gas is called_____________

Elena L [17]

Answer:

When a solid changes into a gas, it is called sublimation.

Explanation:

3 0

4 years ago

Read 2 more answers

When measuring the volume of the marble, why is it better to use the 25-mL graduated cylinder than the 100-mL graduated cylinder

AnnZ [28]

Answer:

$\boxed {\tt A \ marble \ is \ small}$

Explanation:

A marble is not a very large object, so a smaller graduated cylinder is a better choice. A 100 milliliter graduated cylinder is not needed to measure the volume of a small marble, so a 25 milliliter graduated cylinder is the best option.

5 0

3 years ago

. One mole of N2O4 contains ___________.

ivanzaharov [21]

One molecule of N2O4 contains

two nitrogen
four oxygen

7 0

3 years ago

Explain examples of a physical and chemical change of matter

monitta

HEY DEAR..

PHYSICAL CHANGE

Those Changes in which no new substances are formed are called physical changes. it is a temporary changes which can be reversed easily to form the original substance.

Example:- Melting of ice , Making a solution, Glowing of an electric bulb , freezing of water etc.

CHEMICAL CHANGE

Those changes in which new substances are formed are called chemical changes. it means it is permanent changes which are usually irreversible.

Example:- Burning of charcoal, fuels and cutting of trees, even digestion of food is in chemical change.

HOPE ITS HELPFULLL

BE BRAINLY.

6 0

4 years ago