What is a real world application of atwood's machine?

An uplifted block of rock between two normal faults

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?