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zheka24 [161]
3 years ago
7

Sound cannot travel through___________.

Physics
1 answer:
lana [24]3 years ago
5 0

d.) a and b only

This is because sound needs a medium to travel.  It can travel in a solid (the fastest) and air for example.  Sound waves cannot propagate through a vacuum and since space is a vacuum the answer is a and b only.

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The value of k in a vacuum = 9 x 10⁹ (N m² / C²)

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Distance between protons = d = 10⁻¹⁵ m

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Here q1=q2

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Coulomb's Law. Two protons in an atomic nucleus are typically separated by a distance of 2×10−15m. The electric repulsive force between the protons is huge, but the attractive nuclear force is even stronger and keeps the nucleus from bursting apart.

2 Nuclei and the Need for an Attractive Nuclear Force. The Coulomb force also acts within atomic nucleii, whose characteristic dimension is 10 m, which is called a fermi. There are two protons in a He nucleus, which repel each other because of the Coulomb force.

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