Heres a few conceptual questions. i would greatly appreciate any knowledge or thinking. you dont have to answer all of them. i know i cant
1) A spaceship that is spherical in shape travels past an observer who is stationary on earth. Assume that the spaceship has a velocity of 0.8c and travels in a straight line. What shape will the observer see as the spaceship travels past? Explain your answer.
2) Consider the spaceship above. What observation will the earth observer make of the density of the spaceship? Explain your answer.
3) Consider the statement matter can be neither created nor destroyed. In view of your knowledge of Special Relativity is this statement correct? If not how would you correct it.
4) Consider the statement: a compressed spring has more mass than the same spring that isn’t compressed. Explain this.
2007-12-02 08:31:35 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
(1) Length in the direction of velocity is contracted from the point of view of the observer on Earth, so the spacecraft would be a flattened sphere.
(2) The density would appear to be greater for two reasons: from the point of view of the Earth the volume is decreased and the mass is increased.
(3) Einsten's famous equation E = mc^2 describes how matter and energy can be changed back and forth. Now, in special relativity mass/energy IS conserved, but neither is conserved independendly.
(4) Interesting. One explanation is that the potential energy of the spring would be manifested as a slight increase in mass.
2007-12-02 09:09:18 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
You mean if the string became into horizontal between your 2 palms? if so, if the load became into in the middle, the tension could be equivalent on the two palms. we could say the string is 3 ft long, and you place the load a million foot out of your left hand. a million/3 of the tension could be on your left hand, 2/3 could be on your proper. ----------------------------- Now in case you're saying the string is astounding verticle, the tension could be an analogous no count number the place you place the load.
2016-10-10 02:23:46 · answer #2 · answered by ? 4 · 0⤊ 0⤋