Answer:
N = 337.96 N
Explanation:
∅ = 32º
F = 249 N
m = 21 Kg
N = ?
We can apply:
∑ F = 0 (↑)
- Fy - W + N = 0 ⇒ N = Fy + W
⇒ F*Sin ∅ + m*g = N
⇒ N = (249 N*Sin32º) + (21 Kg*9.81 m/s²)
⇒ N = 337.96 N (↑)
True.
In the task you are supposed to explain the process of Dry ice, which is solid changing into CO2 (Carbon dioxide) which is gas.
Dry ice is frozen CO2. Turning dry ice into CO2 is a process called sublimation.
3, 1 could be.
And there's always Heisenberg's uncertainty principle !!!