It states that the total entropy of an isolated system can never decrease over time
The answer is b !!!! Hope it helps
Answer:
B
Explanation:
The control is something that is meant to not be changed, the control is a comparison of the experimental.
1st derivative gives velocity;
d r(t)/ dt = 2t i + 6 j + 4/t k
2nd derivative gives acceleration;
d^2 r(t)/ dt^2 = 2 i - 4/ t^2
Speed ;
Square root of (4 t^2 + 36 + 16/ t^2)
For a given time, like 2 seconds, t will be 2. And answer of speed will be scalar.
