How do you get water to the top of a skyscraper? Water is pumped up to a series of tanks at different heights. Early pumps were usually suction pumps and a suction pump cannot be used to get water to the top of a skyscraper. A suction pump cannot pump water to a height greater […]
#505 How do you get water to the top of a skyscraper? Read More »
What causes rigor mortis? Rigor mortis is caused by the muscles in the body being unable to contract. Rigor mortis is Latin. Rigor means “stiff” and mortis means “death”. It happens because of the way that we extend and contract our muscles. If you want to reach out and pick up a cup of coffee,
#504 What cause rigor mortis? Read More »
Why was the FBI formed? J. Edgar Hoover did a lot to build the FBI, but it was actually started by President Theodore Roosevelt in 1908 to investigate corruption in government. Policing goes back to the origins of the United States of America, but the police are not that old. In the early colonies that
#503 Why was the FBI formed? Read More »
Why does the body produce fat? The body produces fat to store and release energy, for insulation, and to regulate body health. Most of us have tried to lose weight, are trying to lose weight, or will try to lose weight at some point. What we mean by that is lose fat. However, we need
#502 Why does the body produce fat? Read More »
What is a hollow-point bullet? It is a bullet that expands on impact, causing more damage, without going all the way through the target. With a hollow-point bullet, the tip is literally hollowed out. A cartridge has four parts. It has the case, which holds everything together. It has the primer, which is struck by
#501 What is a hollow-point bullet? Read More »
How do fluorescent lights work? They pass an electric current through a low-pressure mercury-vapor, which produces light. A fluorescent light is made of a tube of glass that has a tungsten electrode at each end. Inside the tube is a tiny amount of mercury and an inert gas. There is a phosphor powder coated along
#500 How do fluorescent lights work? Read More »
How does computer encryption work? Most computer encryption works by using prime numbers. What is computer encryption? It is basically a form of code. There have been many different types of code throughout history and they have slowly grown more and more complex. A Caesar cipher is a good example. If you take the word
#499 How does computer encryption work? Read More »
Can you eat the skin of all fruit and vegetables? Some fruits have a poisonous skin that it is better to avoid. The skin of some vegetables is too difficult to chew. What is a fruit? A fruit is a mature, ripened ovary, and the contents of the ovary. The ovary is the female part
#498 Can you eat the skin of all fruit and vegetables? Read More »
Why is Washington DC the capital of the United States? It was a compromise between the northern and the southern states. Washington DC was first used as the capital of America in November of 1800. It replaced the city of Philadelphia, which had been serving as the home of the Continental Congress and the capital
#497 Why is Washington DC the capital of the United States? Read More »
How does a nuclear bomb work? By splitting the nucleus of an atom and releasing the energy. There are two ways to make energy from an atom: fusion and fission. Fusion is the process that happens in our sun. The sun fuses four hydrogen atoms together to make one helium atom. One helium atom has
#496 How does a nuclear bomb work? Read More »
