Answer:
A) or B) which ever you choose in order
Explanation
Hope it helps:)
Scientific form = 6.5 x 109.
A perfect black body can’t be realized
I'm not sure what your question is. But, the half life is the amount of time required for half the material to decay. For U238 this is 4.5 billion years, whilst for Fr-223 (Francium) its about 22 minutes. To calculate the time for something to decay you need to use the equation:
Mass (after time t) = Mass (initial) * (0.5)^(time/half life)
Hope this helps
Answer:
10800
Explanation:
if someone runs 720 miles every minutes they will run 10,800 miles in 15 minutes
