<span>c) Assuming this maximum height was the result of one push from her parent, what was the
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Answer:
It works by testing the ph levels in those areas it is placed in.
Explanation:
The first telescopes were refracting telescopes ... a tube
with lenses at both ends. The quality of the image depends
on the quality of both lenses, because the light must pass
through both of them.
The reflecting telescope was an improvement, because the
light doesn't have to go through the mirror. The quality of the
primary mirror only depends on the shape and shinyness of
its surface.
If you could carve an optically perfect parabolic surface out of
a piece of wood and coat it with a thin layer of shiny silver, then
you could use a log to make a good reflecting telescope.
II seem to recall that Newton made one out of brass !
Answer:
The least possible volume is 
Explanation:
We are asked by the least volume to store 1 mJ at 2000 V.
So, we can use the given formula for 
and solve for Vol.
replacing the values given in the problem and the permittivity of space 
which is 
we obtain Vol.
Note that 
in the above solution
Additional:
Taking into account that the volume of dieletric will be the area of plates (A) times the separation between plates (d).
You also can calculate A and d
d is calculated assuming that the 
is 2000 V and using given equation for :
and A is calculated dividing Vol by d
Answer: 960 W
Explanation:
Power is the rate at which energy is dispensed. Electrical power can be defined as the rate at which electric energy is flowing in an electric circuit. It is given by the formula:
P = V I
Where, V is the voltage(V) , I is the current (A).
V = 240 V (given)
I = 4 A (given)
P = VI = 960 Watts
Hence, power used by the cloth dryer is 960 W.
