RE: Physics questions
May 8, 2019 at 8:27 pm
(This post was last modified: May 8, 2019 at 8:29 pm by Anomalocaris.)
(May 8, 2019 at 2:49 am)=ignoramus Wrote: You know how the thing got shot around the earth's orbit to pickup lots of speed on it's final journey to Mars or Jupiter or wherever,
ok, so matter and energy can't be created or destroyed, but the thing gained energy (kinetic) by flinging around the earth's orbit.
Did the earth lose a corresponding amount of energy from somewhere in this process
Also, on a similarly related topic, talk to me about the what's his name uncertainty principle.
Do electrons in atoms in space ever stop moving? What about at absolute zero? If so, can we then "know" exactly where the "frozen" electrons are
If not, then if the electrons are still moving according to the uncertainty principle, even at absolute zero, then where do they get the energy to do this
Sorry for the silly questions, but in my defense, I am an ignoramus.
1. Yes. When a space craft slingshots around the earth and gains extra speed and orbital energy with respect to the sun, the earth also loses a little orbital energy and speed with respect to the sun. But since earth is about 10e24 kg or about ten million trillion times more massive than the most massive spacecraft ever launched by men, if you sling shot one such spacecraft around the earth every second during every one of solar system’s 4.6 billion years, the earth would still have lost less than 0.25% of its total orbital energy after 4.6 billion years.
2. As I understand it, Whether electron in space ever stop moving depends on what you mean by moving. Electron is not located in one place, rather its location is a hazy probabilistic function smeared out literally across the entire universe. The shape of the probabilistic function always oscillates. So electron always moves in a similar sense as trampoline with a ball bouncing on it moves. The trampoline does not move, but parts of it is always changing with respect to other parts.
3. Absolute zero refers to energy in the molecular motion. At absolute zero fundamental particles like electrons still retains quantum zero point energy and their resultant motion.