Problem: What is a random fact?

Answer: tapping two objects together causes the particles in those objects to vibrate

Problem: What is a random fact?

Answer: a pulley is used to lift a flag on a flagpole

Problem: What is a random fact?

Answer: coal is used to produce electricity by burning in coal-fire power stations

Problem: What is a random fact?

Answer:
the gravitational pull of the Moon on Earth 's oceans causes the tides