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9 godz. temu · Answer Next, we need to calculate the time it takes for the signal to travel 350 kilometers. We can use the formula for time, which is distance divided by speed. So, 350 kilometers divided by 300,000 kilometers per second equals approximately 0.001167 seconds, or about 1.167 milliseconds.
9 godz. temu · The photographic effect of the \(\alpha\) particles towards the end of their path in air certainly decreases far more rapidly than the kinetic ... weighing approximately 8000 times more than an electron and travelling at a speed of 10,000 miles per second, should hit (according to Thomson’s model) a bunch of electrons, immersed in a sphere of ...
1 dzień temu · Enrico Fermi (1901–1954) The Fermi paradox is a conflict between the argument that scale and probability seem to favor intelligent life being common in the universe, and the total lack of evidence of intelligent life having ever arisen anywhere other than on Earth. The first aspect of the Fermi paradox is a function of the scale or the large ...
9 godz. temu · As Footnote 1 we have seen in Sect. 3.7, in 1869 German chemist and physicist Johann Wilhelm Hittorf (Bonn, 1824–Münster, 1914) discovered that a green fluorescence was evident on the glass wall of a tube filled with a rarefied gas, inside which there were two electrodes between which a high potential difference was applied.Since the fluorescence appeared in front of the cathode, it was ...
9 godz. temu · One astronomical unit (about 150 million kilometres; 93 million miles) is defined as the mean distance between the centres of the Sun and the Earth. The instantaneous distance varies by about ± 2.5 million km or 1.55 million miles as Earth moves from perihelion on ~ January 3rd to aphelion on ~ July 4th.
9 godz. temu · Zbigniew Brzezinski opined in 1997 that Russia should be divided into three loosely confederated entities in Russian Europe, Siberia, and the far east. In 1999, the U.S.-led NATO alliance bombed Russia’s ally, Serbia, for 78 days in order to break Serbia apart and install a massive NATO military base in breakaway Kosovo.
