8. Joe travels at 99.999 percent of the When you look at Joe as he passes by Ear

Question

8. Joe travels at 99.999 percent of the When you look at Joe as he passes by Earth, you notice that Joe height of an object that is at right angles to the direction he is traveling. oks at his meter stick, it appears to be how long? (B) When you lo meter stick from Earth, the meter stick appears to be how long? b. 0.5 m c. 0.03 m d. 0.01 m e. 0.003 m b. 0.5 m c. 0.03 m d. 0.01 mm e. 0.003 m o. Albert Einstein derived an equation that states that E me'. What de Mass and energy are the identical. . As you burn something, like coal, you can release energy. c. Energy is released if mass disappears. d. This is energy in the nucleus. e. This is sometimes called Einstein's Folly - his biggest mistak 10. If a star that is 20 light-years from Earth collapses, astronomers o of this event in a. a few minutes. b. 10 vears 20 years d. 30 years. e. One must calculate the relativistic speed of light to knowh take 11. When a radioactive isotope experiences fission for 10 half-liv radiation that remains is a. about one half of the original isotope b. about one tenth of the original isotope. c. about one hundredth of the original isotope. d. about one thousandth of the original isotope. e. The original amount of the isotope remains; it just doe

Explanation / Answer

11.

ten half cycles means= (1/2)^10= 1/1024 (aprox one thousandth)

so option (d) is correct.

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