The answer will be B) Meter
The first law
In Newtons first law it states that an object will not change its motion unless a force acts upon it.
Explanation:
Area=1.5(1.5)=2.25m^2
Force of gravity=10N
\begin{gathered}\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}\end{gathered}
⟼Pressure=
Area
Force
\begin{gathered}\\ \sf\longmapsto Pressure=\dfrac{10}{2.25}\end{gathered}
⟼Pressure=
2.25
10
\begin{gathered}\\ \sf\longmapsto Pressure=4.4Pa\end{gathered}
⟼Pressure=4.4Pa
Answer:
The correct answer is "53.15 days".
Explanation:
Given that:
Half life of
,

- Let the initial activity be "
". - and, activity to time t be "R".
To find t when R will be "1%" of
, then
⇒ 
As we know,
⇒ 
or,
∴ 
By putting the values, we get


We know that,
Decay constant, 
hence,
⇒ 

