Question

3) how did the children know that someone was in trouble​

Answer 1

Explanation:

Answer is :

.

Q.Nuclear sizes are expressed in a unit named

A. Fermi

B. angstrom

C. newton

D. tesla

Answer: Option A

Explanation:

Fermi - A unit of length equal to 10-15 meter (one femtometer), used in nuclear physics. It is similar to the diameter of a proton.