The droplets on a glass of ice water are a result of water vapor releasing energy and changing to water droplets.
2 answers:
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No force contributes to density, the density is a physical quantity that is defined as being 
the raport between the mass of the object and its volume. However if you want to measure the density of an object you might want to determine its gravity force (weight) 
from which knowing the gravitational acceleratin you can find its mass 
where
is given in Newtons and 
is given in 
where
Answer:
The positive displacement from the midpoint of its motion at the speed equal one half of its maximum speed is 3.56 cm.
Explanation:
Maximum speed is :
v (max) = Aω
Speed v at any displacement y is given by
=
(
-
) ........................................................ i
And,
v = v (max)
or, 2 × v = Aω .................................................... ii
Eliminating ω from equations i and ii,
=
(
-
)
or, = (
)
=(
)
or, y = 3.56 cm.