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Physics

1 answer:

hichkok12 [17]3 years ago

8 0

Answer:

- 500kg

Explanation:

momentum calculator online

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Andre is studying snails and how fast they travel. He observes three groups of snails containing four snails each. Here are the

Olin [163]

The material that the snails are moving on affects their speed. On a smooth material, (petri dish) the snails moved the fastest. On a rough material (sandpaper) the snails moved the slowest. On dirt, a compromise between smooth and rough, the snails moved at a medium pace. The material and possibly friction affect this.

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4 years ago

The universe could be considered an isolated system because

cricket20 [7]

a) many people think that no energy or matter exists outside the universe.

An isolated system is defined as a system that does not interact with its surroundings. This is the reason that its total energy and mass remains constant. Moreover, total momentum in a system is conserved for collisions occurring in isolated systems.

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3 years ago

How does losing an electron result in a positive charge?

AlekseyPX

A proton has a positive charge, an electron has a negative charge. Usually, the amount of electrons and protons is the same, but when an electron is lost usually because of radiation or a chemical reaction the resulting amount of electrons/ protons results in a different charge for the atom in general.
When there are more electrons the result it a negative ion, and when there are more protons it is a positive ion.
So, to answer your question: if an electron is lost from a neutral atom and there are more protons than electrons you get a positive charge. Have a good day!

3 0

4 years ago

What are four factors that can affect the amount of friction between two objects

umka2103 [35]

As the Force of friction is equal to $F _{f} =$ µ $F_{n}$ by using the Law of Action Reaction; as the force normal is the conterforce of gravity

$F _{f} =$ µ $F_{n}$
$F_{f}=$ µ $F_{n}$

Therefore, by looking at the equation we can infer that

The force of friction is directly proportional to the mass, gravitational constant, and the co-efficent of friction

Because the gravitational constant is dependant on gravitation, a planet's mass and radius also affect the force of friction

But DO NOTE:
That the co-effecient of friction is only applicable between two rubbing surfaces and unaffected by gravitational constants.

If you found this helpful, please rate it as "Brainiest"
Also if this need further explaining, please comment below

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4 years ago

A man can swim with a speed of 3 m/s in still water. He crosses a river of width 100 m by swimming in the direction that will ta

Elis [28]

Explanation:

The given data is as follows.

width = 100 m, speed = 3 m/s

So, minimum time required to cross the stream is calculated as follows.

t = $\frac{100 m}{3 m/s}$