How is momentum conserved in a Newton's cradle when one steel ball hits the other?

Physics

2 answers:

weeeeeb [17]3 years ago

8 0

Answer:

4. All the momentum starts in one ball, and after the collision, it is all in the other ball.

Explanation:

All the momentum starts in the first ball (the one is moving) . When this ball collides with the second ball, the first ball stops but its momentum it is transferred to the second ball, then to the third then fourth until it reaches the very last ball. Only the last ball has momentum now because is the only one moving.

lora16 [44]3 years ago

7 0

Answer:Both balls have momentum to start,and they share it after collision

Explanation:both balls have momentum to start and they share it after collision

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How do carbon 12 and carbon 13 differ?

astraxan [27]

Answer:

A) & B)

Explanation:

First, the numbers 12 and 13 represent the atomic mass number of the atoms.

So, A) is true: thus Carbon12 and Carbon 13 have different mass numbers.

The mass number is equal to the total number of protons and neutrons. Consider that any element has the same number of protons, regardless of the number of neutrons. The number of protons in Carbon is 6.

The amount of neutrons can be calculated by: mass number minus number of protons.

For Carbon 12: $12-6=6$

For Carbon 13: $13-6=7$

B) is true, we just proved they have different amounts of neutrons.

In order for the charge of the atom to be neutral, the amount of electrons must be equal to the number of protons (as they have opposite charges). And we now know that the number of protons in Carbon12 and Carbon13 are always the same

C) is false, the number of electrons is the same in both atoms

The atomic charges in both are neutral, due to the fact that they have the same amount of protons and electrons in both cases. Is only the neutrons (thus the mass numbers)that change