Physics
which type of lightning is the most dangerous?
Lightning , in general, is an electrical discharge caused by positive and negative imbalances within clouds themselves, or between storm clouds and the ground. Lightning may flash on Earth about 100 times per second. Lightning Do you know that a lightning flash can warm the air five times more than the surface of the sun's, The heat causes the surrounding a…
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Physics
Our solar system
Solar System The solar system consists of the sun, the eight planets, and satellites (or moons ), and thousands of other smaller heavenly bodies such as asteroids , comets , and meteors . The sun is at the center of the solar system and all these other objects revolving around it. Thus, the motion of all the members of the solar system is governed mainly by …
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Physics
What does g = 9.81 m/s^2 mean?
I t can indicate two things depending on how you look at it. g = 9.81m/s2 indicates that if you were on Earth, and you somehow were able to create a space free of any air (a vacuum), and you dropped something, then that object’s speed would be 9.81 m/s after one second, 19.62 after another second, 29.43 after another and so on. In another word, it would accel…
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