In the given equation :
If three physical quantities is to be added or subtracted, they must have same dimensions.
So, dimension of y = dimension of c(t²)
And we already know,
- y = M⁰L¹T⁰ [ since it represents distance/length ]
- t = M⁰L⁰T¹ [ since it represents time ]
( by squaring )
Now, we need to calculate dimension and unit of c :
Now, we got the dimension of c as :
So, it's SI unit will be :
[ since SI unit of length/distance = m, and SI unit of Time = sec, hence SI unit of T² = s² ]
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
the answer is c because it is the 3rd step in the scientific analysis steps
Vocabulary should be, I think:
I. Hypothesis
II. Evidence, data
III. Experiment
What is your question exactly?