Answer:
F. Both A and C
Explanation:
I got the question right when i picked this
Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Water vapor argon carbon dioxide
Answer:
D
Explanation:
The Sun because it is the friendly renewable source of energy and also it is the costless renewable source of energy
Answer:
Rabi, Kharif, Zaid.
Explanation:
India has three cropping seasons:- rabi, kharif and zaid. Rabi crops are sown in winter from October to December and harvested in summer from April to June. Some of the important rabi crops are wheat, barley, peas, gram and mustard.
