What does E = mc2 stand for?
According to Albert Einstein’s law on the equivalence of mass and energy, the energy (E) of a quantity of matter is equal to the product of the quantity’s mass (m) and the square of the velocity of light (c).
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How many hairs are on a human head?
About 100,000 hairs are on a human head. Human hairs grow about 0.01 inch every day.
What is a quasar?
A quasar is another name for a quasi-stellar object. It looks like a star but emits as much radiation as an entire galaxy, with a volume far smaller than that of our Milky Way galaxy. No one knows what a quasar is; recent evidence suggests it might be a galaxy with a big black hole…
Where did the part of the throat known as the Adam’s apple get its name?
The Adam’s apple refers to a legend that claims a piece of the forbidden fruit stuck in Adam’s throat. This part of the throat is actually a projection of the thyroid cartilage of the larynx.
How many times does a heart beat in a lifetime?
Assuming that the heart beats at least once a second, by the time a person is 70, his or her heart will have beat at least 2.8 billion times.
When did dinosaurs become extinct?
Dinosaurs lived during the Mesozoic era, 225 million to 65 million years ago. By the end of that era, all Archosauria (or “ruling reptiles”), except crocodiles, had died.
Which age group in the United States has the highest voter turnout?
According to 1980 census findings, citizens in the 55 64 age group had a turnout of 71.3 percent. Close behind were those in the 65-to-74 age group, with 69.3 percent. Those 18 and 19 brought up the rear with a 34.2 percent showing.