Answer is C: Ability to see three-dimensional images of the surfaces of object
Explanation:
To enable the technician see fractures and broken particles in a better resolution as the SEM sees the peaks and valley of the structure.
D is the answer
To get the density you divide mass by volume
So the equation is 400/60=d
DRAG is the sum of all the aerodynamic or hydronamic forces in the direction of the external fluid flow.
Answer:
1) 
2) 
Explanation:
Given:
- mass of heavier student,

- mass of lighter student,

- velocity of the heavier student after the mutual push,

1)
Since they push each other and we are neglecting any friction that means we can consider this as a perfectly elastic collision. So the momentum of the two bodies will be equal and in opposite direction.
Since momentum is a vector quantity so the total momentum of the system as a whole will be zero.
2)
<u>From the condition of elastic collision:</u>



