What height to reach terminal velocity?

What height to reach terminal velocity?

A falling person will reach terminal velocity after about 12 seconds, falling some 450 m (about 1,500 ft) in that time. That person will not then fall any faster, so it makes no difference what distance they fall if it is more than 1,500 ft – they will still reach the ground at the same speed.

Do all fish need oxygen?

Fish need oxygen too, but since they don t have lungs, they take oxygen from the water in which they live. The oxygen in the water available to fish is called dissolved oxygen (oxygen that is dissolved in the water). Fish use gills to take oxygen from water just as we use our lungs to take oxygen from the air.

What year was the ballpoint pen invented?

It was a familiar frustration that led to the invention of the modern ball-point pen – leaky ink. In 1938, Hungarian newspaper journalist Laszlo Biro noticed the ink used on the printing presses dried quickly and so tried using it in a fountain pen to avoid the problem of leaks, blots and smudges.

What’s the only U.S. capital without a McDonalds?

Montpelier, Vermont, doesn’t have any of those Golden Arches. It also happens to have the smallest population of any state capital, with just 7,500 residents.

What speed does wind become a hurricane?

This is an area of rotating thunderstorms with winds of 62 km/hr (38 mph) or less. A tropical depression becomes a tropical storm if its winds reach 63 km/hr (39 mph). A tropical storm becomes a hurricane if its winds reach 119 km/hr (74 mph).

Where is Gobekli Tepe?

Göbekli Tepe (Turkish: [ɡøbe̞kli te̞pɛ], “Potbelly Hill”) is an archaeological site at the top of a mountain ridge in the Southeastern Anatolia Region of Turkey, approximately 6 km (4 mi) northeast of the town of Şanlıurfa.

How far do wolves travel in a day?

A human has a much lower biting pressure of 300 pounds per square inch. Wolves will travel for long distances by trotting at about five miles per hour. They can run at speeds of 25 to 35 miles per hour for short bursts while chasing prey. Wolves may travel 10 to 30 miles each day in search of food.

What does Shemp mean?

Fake Shemp or simply Shemp, is the term for someone who appears in a film as a replacement for another actor or person. Their appearance is disguised using methods such as heavy make-up, filming from the back, or perhaps only showing an arm or a foot.