Volume=mass/density
volume=455.6/19.3
volume=23.6 mL
Answer:
F=ma
therefore A=F/M
Explanation:
i think that's what your doing but I'm not sure
Answer:

Explanation:
When top block is just or about to slide on the lower block then we can say that the frictional force on it will be maximum static friction
So we will have






now for the Net force on two blocks to move together



We know, Potential Energy = Force * Height
Here, F = 40 N
h = 5 m
Substitute their values,
U = 40 * 5
U = 200 J
In short, Your Answer would be Option A
Hope this helps!