Answer:
16.2 days
Explanation:
Find the number of halflives:
1/2 * 1/2 = 1/4 so <u>two</u> halflives have passed
2 * 8.1 days = 16.2 days
I think it is liters, cubic meters, or milliliters.<span />
Bohr explained that the electron revolve around a orbit of fixed energy level that Rutherford fails to explain !!!
Answer:
1,632 rounded by the nearest ten is 1630
783 rounded by the nearest hundred is 800
43,761 rounded by the nearest thousand is 44,00
Explanation:
11. Not sure, magnetic fields maybe? 12. Atmosphere 13. Rotation about the axis and wobble 14. Asteroids 15. Comets
