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Questions | Answers | Discussions | Knowledge sharing | Communities & more.
What was the name of the first man-made satellite launched by the Soviet Union in 1957?
On October 4, 1957, the Soviet Union launched the earth's first artificial satellite, Sputnik I. The successful launch came as a shock to experts and citizens in the United States, who had hoped that the United States would accomplish this scientific advancement first.
On October 4, 1957, the Soviet Union launched the earth’s first artificial satellite, Sputnik I. The successful launch came as a shock to experts and citizens in the United States, who had hoped that the United States would accomplish this scientific advancement first.
See lessWhat name is given for the number of protons found in the nucleus of an atom?
Atomic number The number of protons in the nucleus of an atom is called it's Atomic number.
Atomic number
See lessThe number of protons in the nucleus of an atom is called it’s Atomic number.
Roughly how long does it take for the sun's light to reach Earth – 8 minutes, 8 hours or 8 days?
Light travels at a speed of 300,000 km/sec and the distance between earth and the sun is 150 million km. Thus it takes nearly 8 minutes for light from the sun to reach earth.
Light travels at a speed of 300,000 km/sec and the distance between earth and the sun is 150 million km. Thus it takes nearly 8 minutes for light from the sun to reach earth.
See lessAt what temperature are Celsius and Fahrenheit equal?
There are two important temperature scales, Celsius and Fahrenheit used in the world. There is a point on both scales where the temperatures in degrees are equal. This is - 40 ° C and - 40 ° F .
There are two important temperature scales, Celsius and Fahrenheit used in the world. There is a point on both scales where the temperatures in degrees are equal. This is – 40 ° C and – 40 ° F .
See lessWhat modern-day country was Marie Curie born in?
Although born in Poland, Marie Curie spent much of her life living in France.
Although born in Poland, Marie Curie spent much of her life living in France.
See lessWhich famous British physicist wrote A Brief History of Time?
physicist Stephen Hawking A Brief History of Time: From the Big Bang to Black Holes is a book on theoretical cosmology by English physicist Stephen Hawking. It was first published in 1988.
physicist Stephen Hawking
See lessA Brief History of Time: From the Big Bang to Black Holes is a book on theoretical cosmology by English physicist Stephen Hawking. It was first published in 1988.
The concept of gravity was discovered by which famous physicist?
Sir Isaac Newton Sir Isaac Newton discovered the existence of gravity. It is said that he realised about gravity when he saw an apple fall down from a tree.
Sir Isaac Newton
See lessSir Isaac Newton discovered the existence of gravity. It is said that he realised about gravity when he saw an apple fall down from a tree.
Which famous British physicist wrote A Brief History of Time?
physicist Stephen Hawking A Brief History of Time: From the Big Bang to Black Holes is a book on theoretical cosmology by English physicist Stephen Hawking. It was first published in 1988.
physicist Stephen Hawking
See lessA Brief History of Time: From the Big Bang to Black Holes is a book on theoretical cosmology by English physicist Stephen Hawking. It was first published in 1988.
What is the most abundant gas in the Earth's atmosphere?
The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air. Oxygen (O2) is the second most abundant gas at about 21%. The inert gas argon (Ar) is the third most abundant gas at 0.93%.
The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air. Oxygen (O2) is the second most abundant gas at about 21%. The inert gas argon (Ar) is the third most abundant gas at 0.93%.
See lessHumans and chimpanzees share roughly how much DNA?
But for a clear understanding of how closely they are related, scientists compare their DNA, an essential molecule that's the instruction manual for building each species. Humans and chimps share a surprising 98.8 percent of their DNA.
But for a clear understanding of how closely they are related, scientists compare their DNA, an essential molecule that’s the instruction manual for building each species. Humans and chimps share a surprising 98.8 percent of their DNA.
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