What is the difference between a petrol engine and a diesel engine? They use different fuel, they ignite the fuel in a different way, and a diesel engine is more efficient than a petrol engine. Diesel and petrol are both made from crude oil. Crude oil is the petroleum that is taken out of the […]
#541 What is the difference between a petrol engine and a diesel engine? Read More »
Why are UK public schools actually private schools? They were not attached to a church and were open to the fee-paying public. They are technically not for profit charities. In most countries, public schools are run by the government and private schools are run by private institutions. In the UK, public schools are a different
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How is Easter calculated? Easter is the first Sunday after the full Moon that occurs on or after the spring equinox. When to celebrate Easter is a problem that has taxed the church for centuries. The date of Easter is very important for the Christian church because the whole religion revolves around the birth and
#536 How is Easter calculated? Read More »
What happened to biplanes and triplanes? They produce too much drag, which means they can’t fly fast enough and they use a lot more fuel. The first planes built were biplanes. The first heavier-than-air plane was a triplane. Sir George Cayley built a glider with three wings in 1848. He managed to convince a local
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Why are there 12 signs of the Zodiac? Because the Babylonians decided that there should only be 12. What are the signs of the zodiac? The signs of the zodiac are the symbols that represent the 12 different constellations that the sun passes in front of throughout a year. They are all found in a
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How does C-4 work? It rapidly produces gases at an explosive velocity. C-4 is a plastic explosive called Composition C-4 and it is the fourth in the series. Composition C was discovered in World War II and the first type was only called Composition C. Each variation had problems that were ironed out by the
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Is Krav Maga effective? Yes, or the Israeli army wouldn’t teach it. However, you need to train in realistic situations. Krav Maga is a martial art that was created for the Israeli Defense Forces. The words krav maga are Hebrew. קרבנגע. Krav means “combat” or “battle” and maga means “contact” or “touch”. It was created
#513 Is Krav Maga effective? Read More »
What is the range of a cell phone tower? The average maximum range of a phone mast is about 40 km, 25 miles. How does a cell phone tower work? Cell towers have detectors and transmitters to receive and transmit radio signals. When you want to look at a website on your phone, my site
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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 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
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