⁉️ What was the first metal used by man?
✅ Over 4,000 years ago, when it was discovered that minerals could be melted, curiosity led man to combine melted metals (alloys). By accident they made bronze by adding tin to copper (the Bronze Age). Another combination of zinc and copper made brass.
@askmenow
✅ Over 4,000 years ago, when it was discovered that minerals could be melted, curiosity led man to combine melted metals (alloys). By accident they made bronze by adding tin to copper (the Bronze Age). Another combination of zinc and copper made brass.
@askmenow
⁉️ What is the dew point?
✅ Dew point temperature is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapor content) in order to reach saturation. A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure.
@askmenow
✅ Dew point temperature is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapor content) in order to reach saturation. A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure.
@askmenow
⁉️What was the first fast food restaurant?
✅Arguably, the first fast food restaurants originated in the United States with A&W in 1919 and White Castle in 1921. Today, American-founded fast food chains such as McDonald's and KFC are multinational corporations with outlets across the globe.
@askmenow
✅Arguably, the first fast food restaurants originated in the United States with A&W in 1919 and White Castle in 1921. Today, American-founded fast food chains such as McDonald's and KFC are multinational corporations with outlets across the globe.
@askmenow
⁉️ How high can you go without oxygen?
✅ We pass out when the pressure drops below 57 percent of atmospheric pressure — equivalent to that at an altitude of 15,000 feet (4,572 meters). Climbers can push higher because they gradually acclimate their bodies to the drop in oxygen, but no one survives long without an oxygen tank above 26,000 feet (7925 m).
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✅ We pass out when the pressure drops below 57 percent of atmospheric pressure — equivalent to that at an altitude of 15,000 feet (4,572 meters). Climbers can push higher because they gradually acclimate their bodies to the drop in oxygen, but no one survives long without an oxygen tank above 26,000 feet (7925 m).
@askmenow
⁉️ What country consumes the most chocolate?
✅ A new study in The New England Journal of Medicine shows that a country's chocolate consumption correlates strongly with the number of Nobel Prizes its citizens win. According to the author's calculations, Switzerland consumes the most chocolate and ranks second behind Sweden in laureates per capita.
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✅ A new study in The New England Journal of Medicine shows that a country's chocolate consumption correlates strongly with the number of Nobel Prizes its citizens win. According to the author's calculations, Switzerland consumes the most chocolate and ranks second behind Sweden in laureates per capita.
@askmenow
⁉️ What English word has three consecutive double letters?
✅ "Bookkeeper" and "bookkeeping" and "sweet-toothed" have three consecutive sets of double letters. Others are "deer-reeve," "feed-door," "heel-loop," "hoof-footed," "hoot-toot," "keek-keek," "Soonnee," "toot-toot," "veneer-room," and "wood-deer."
@askmenow
✅ "Bookkeeper" and "bookkeeping" and "sweet-toothed" have three consecutive sets of double letters. Others are "deer-reeve," "feed-door," "heel-loop," "hoof-footed," "hoot-toot," "keek-keek," "Soonnee," "toot-toot," "veneer-room," and "wood-deer."
@askmenow
⁉️How does a lunar eclipse occur?
✅ Solar and lunar eclipses are dependent on the alignment of the sun, moon and Earth. When the moon is aligned exactly between the Earth and the sun, the shadow of the moon blocks the sun from view. A lunar eclipse occurs when the moon passes into the shadow of the Earth.
@askmenow
✅ Solar and lunar eclipses are dependent on the alignment of the sun, moon and Earth. When the moon is aligned exactly between the Earth and the sun, the shadow of the moon blocks the sun from view. A lunar eclipse occurs when the moon passes into the shadow of the Earth.
@askmenow
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⁉️ What was the first human organ to be successfully transplanted?
✅ Organ Transplant History. 1954: On December 23, the first successful living-related kidney transplant led by Dr. Joseph Murray and Dr. David Hume at Brigham Hospital in Boston: A kidney was transplanted from Ronald Herrick into his identical twin, Richard.
@askmenow
✅ Organ Transplant History. 1954: On December 23, the first successful living-related kidney transplant led by Dr. Joseph Murray and Dr. David Hume at Brigham Hospital in Boston: A kidney was transplanted from Ronald Herrick into his identical twin, Richard.
@askmenow
⁉️ How long does it take for a coffee tree to produce?
✅ The tree of Coffea arabica will grow fruits after three to five years, and will produce for about 50 to 60 years (although up to 100 years is possible). The white flowers are highly scented. The fruit takes about 9 months to ripen.
@askmenow
✅ The tree of Coffea arabica will grow fruits after three to five years, and will produce for about 50 to 60 years (although up to 100 years is possible). The white flowers are highly scented. The fruit takes about 9 months to ripen.
@askmenow
⁉️ Why do mosquito bites itch?
✅ While bees and wasps inject venom when they sting, mosquitoes simply bite to feed on your blood. The bumps and itchiness that follow come from an anticoagulant that the mosquito injects to prevent your blood from clotting, which triggers a mild allergic reaction that includes the typical round, red bumps.
@askmenow
✅ While bees and wasps inject venom when they sting, mosquitoes simply bite to feed on your blood. The bumps and itchiness that follow come from an anticoagulant that the mosquito injects to prevent your blood from clotting, which triggers a mild allergic reaction that includes the typical round, red bumps.
@askmenow
⁉️ Do starfish have a brain?
✅ The nervous system of the starfish is very simple...there is no brain and there are not even any ganglia to coordinate movement. The nervous system is characterized by a nerve ring that surrounds the mouth. A radial nerve branches off of the nerve ring and extends to each arm.
@askmenow
✅ The nervous system of the starfish is very simple...there is no brain and there are not even any ganglia to coordinate movement. The nervous system is characterized by a nerve ring that surrounds the mouth. A radial nerve branches off of the nerve ring and extends to each arm.
@askmenow
⁉️ Which finger nail grows the fastest?
✅ On average, fingernails grow about one tenth of an inch in a month. The fastest growing nail is the one on your middle finger. The slowest growing nail is your thumb nail. Freshly cut nails grow faster than nails that aren't cut regularly.
@askmenow
✅ On average, fingernails grow about one tenth of an inch in a month. The fastest growing nail is the one on your middle finger. The slowest growing nail is your thumb nail. Freshly cut nails grow faster than nails that aren't cut regularly.
@askmenow
⁉️ Why does an old bottle of aspirin smell like vinegar?
✅ When aspirin ages, it gradually reacts with absorbed moisture from the air and partially reverts back to salicylic acid and acetic acid. In general, it's the above reaction run backwards. It is the acetic acid that smells like vinegar.
@askmenow
✅ When aspirin ages, it gradually reacts with absorbed moisture from the air and partially reverts back to salicylic acid and acetic acid. In general, it's the above reaction run backwards. It is the acetic acid that smells like vinegar.
@askmenow
⁉️ What is the percentage of salt in ocean water?
✅ The concentration of salt in seawater (salinity) is about 35 parts per thousand. Stated in another way, about 3.5 percent of the weight of seawater comes from the dissolved salts; in a cubic mile of seawater, the weight of the salt (in the form of sodium chloride) would be about 120 million tons.
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✅ The concentration of salt in seawater (salinity) is about 35 parts per thousand. Stated in another way, about 3.5 percent of the weight of seawater comes from the dissolved salts; in a cubic mile of seawater, the weight of the salt (in the form of sodium chloride) would be about 120 million tons.
@askmenow
⁉️ How do the atoms in a water molecule stick together?
✅ Hydrogen Bonding. When water molecules align with each other, a weak bond is established between the negatively charged oxygen atom of one water molecule and the positively charged hydrogen atoms of a neighboring water molecule.
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✅ Hydrogen Bonding. When water molecules align with each other, a weak bond is established between the negatively charged oxygen atom of one water molecule and the positively charged hydrogen atoms of a neighboring water molecule.
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⁉️ What element burns in contact with water?
✅ This page describes the reactions of the Period 3 elements from sodium to argon with water, oxygen and chlorine. Sodium has a very exothermic reaction with cold water producing hydrogen and a colourless solution of sodium hydroxide. Magnesium has a very slight reaction with cold water, but burns in steam.
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✅ This page describes the reactions of the Period 3 elements from sodium to argon with water, oxygen and chlorine. Sodium has a very exothermic reaction with cold water producing hydrogen and a colourless solution of sodium hydroxide. Magnesium has a very slight reaction with cold water, but burns in steam.
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⁉️ Is the North Star the brightest star in the sky?
✅ Polaris (α UMi, α Ursae Minoris, Alpha Ursae Minoris, commonly North Star, Northern Star or Pole Star, also Lodestar, sometimes Guiding star) is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star.
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✅ Polaris (α UMi, α Ursae Minoris, Alpha Ursae Minoris, commonly North Star, Northern Star or Pole Star, also Lodestar, sometimes Guiding star) is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star.
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