Answer:
Newtons first law
Explanation:
object in rest stays at rest
object in motion stays in motion
A water wave is an example of a mechanical wave. A wave that can travel only through matter is called a mechanical wave.
Answer:
v = 1.15*10^{7} m/s
Explanation:
given data:
charge/ unit area
plate seperation = 1.69*10^{-2} m
we know that
electric field btwn the plates is
force acting on charge is F = q E
Work done by charge q id
this work done is converted into kinectic enerrgy

solving for v



v = 1.15*10^{7} m/s
The two kinds of motion are horizontal and vertical
The "rare earths" are.
Apparently, they are so rare that they never got comfortable associating with
the other elements, and prefer to keep to themselves.