Answer:
69000 V
Explanation:
E = Electric field = 
d = Distance between plates = 2.3 cm
When we multiply the electric field strength and the distance between the plates of a capacitor we get the maximum voltage.
Maximum voltage is given by

The highest voltage the students can use is 69000 V
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Answer:
ummmm is this even a question
Explanation:
Answer:
The magnification of the lens is 0.7
Explanation:
We have,
Height of an object is 5 cm
Object is placed 4.25 cm from a lens
Image is formed 3.00 cm behind the lens.
It means u = -4.25 cm
v = -3 cm (behind the lens)
Magnification of the lens is given by :

So, the magnification of the lens is 0.7
Answer:
Explanation:
Archimedes principle states that the upward buoyant foce exrted on a body is equal to th wight o the liquid displaced.
Now, the buoyant force on the boat is given by:

is the volum
is the density
is the mass of the boat and
is the mass added to the boat.

is the surface area and
is the depth.

The equation for thebest fit linis,

Re-arrangethis equati for 

From equations(1) and (2),

the density is,

Therefore, the density of the liquid is
