Answer:
A) 1.5 v
B) Top plate is at higher voltage than the bottom plate
Explanation:
Battery value set between 0.0 V and 1.5 V
a) The potential difference between the plates
Δ V = V1( potential at top plate) - V2( potential at lower plate )
potential at top plate = 1.5 V
potential at lower plate = 0.0 V
hence potential difference = 1.5 V
b ) The top plate is always connected to the positive terminal of the DC source ( which is at a higher potential )while the bottom plate is connected to the negative terminal of the DC source ( which is at a lower potential )
hence the Top plate is at higher voltage than the bottom plate
Answer:

Explanation:
From the question we are told that:
Mass 
Spring constant 
Fall Height 
Generally the Energy theorem equation for momentum is mathematically given by
Change in KE=Work done by gravity + work done by spring


Solving Quadratic equation
Answer:I will give it to another person
Explanation:because they are good to me
Plane mirrors and convex mirrors only produce virtual images. Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance greater than a focal length from the mirror's surface. And the upright images produced by plane mirrors have the same size as the object.