Answer: Answer is D
I took the test little while back.
Answer:
Hey!
Your answer should be D!
Explanation:
In a transformer Np / Ns is called the voltage ratio. If Ns is less than Np then Vs is less than Vp. This is called a step-down transformer as the voltage is reduced.
(source from google.com!)
You are given the half life of an isoptope which is 5.2yr and the numer of days that it will decay which is 30 months. You are required to find the initial mass of the isotope.
An = A0*exptaveln2/t1/2
30 = A0 exp^(30/12 * ln2/5.2yr)
A0 = 21.5grams
Bruh Newton's laws on motion are better tbqh