Why can an electric current pass easily through a metal? The positive nuclei of metal atoms strongly attract their negative valence electrons.
O Negatively charged electrons can move freely through a metal.
Positively charged metal ions move freely from one end of a metal to the other.
O
Positively charged metal ions are arranged in crystals.
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Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Why is the bottom layer of a trophic pyrimid the