What is the value of G?
Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2. When discussing the acceleration of gravity, it was mentioned that the value of g is dependent upon location. There are slight variations in the value of g about earth’s surface.
What is the gravitational field constant?
The measured value of the constant is known with some certainty to four significant digits. In SI units, its value is approximately 6.674×10−11 m3⋅kg−1⋅s−2. The modern notation of Newton’s law involving G was introduced in the 1890s by C. V. Boys.
What would happen if everyone on Earth jumped?
What if we all jumped at once? Because people are spread somewhat equally around the planet’s spherical surface , if we all jumped in place, nothing much would happen — all our lift-offs and impacts would cancel each other out, resulting in zero net force on the Earth, according to work by physicist Rhett Allain.
Can you survive a nuclear blast in a refrigerator?
Lucas said that if the refrigerator were lead-lined, and if Indy didn’t break his neck when the fridge crashed to earth, and if he were able to get the door open, he could, in fact, survive. “The odds of surviving that refrigerator — from a lot of scientists — are about 50-50,” Lucas said.
Can we nuke the sun?
Nothing! Since our nukes are insignificant against Sun’s energy. Although we would be providing more fuel since Sun is a giagantic fusion reactor. Our nukes will provide hydrogen if its a fusion bomb or uranium if its a fission bomb which our Sun would consume in fraction of milliseconds.
How many nukes does Earth have?
From a high of 70,300 active weapons in 1986, as of 2019 there are approximately 3,750 active nuclear warheads and 13,890 total nuclear warheads in the world.
What happens if a nuke goes off underwater?
Unless it breaks the water surface while still a hot gas bubble, an underwater nuclear explosion leaves no trace at the surface but hot, radioactive water rising from below. During such an explosion, the hot gas bubble quickly collapses because: The water pressure is enormous below 2,000 feet (610 m).
Where is asteroid that killed dinosaurs?
Chicxulub crater
Can a bomb explode in a vacuum?
Yes it can. Explosives contain an oxidizer so they can detonate even in a vacuum. They will release energy, particularly heat. A bomb that has an explosive, but depends on oxygen in the air to explode, wouldn’t do anything because there’s no oxygen in a vacuum.