How can we calculate the e.m.f of the battery?.
2 answers:
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Explanation:
Given that,
Electrostatic force,
Distance,
(a) , q is the charge on the ion
(b) Let n is the number of electrons are missing from each ion. It can be calculated as :
n = 2
Hence, this is the required solution.
Answer:
=6.5%
Explanation:
Mass of the ball: ]
Initial velocity of the ball:
final velocity of the ball: which is -30/100 of
=
Mass of the bottle:
Initial velocity of the bottle:
final velocity of the bottle: is unknown (to find)
<em>by using conservation momentum, which stated that the initial momentum is equal to the final momentum.</em>
<em /><em />
<em>so since the bottle is at rest firstly, therefore </em><em />
<em /><em />
<em /><em> </em><em>equation 1</em>
so now substitute into equation 1
<em /><em />
<em>collect the like terms</em>
divide both side by
Now substitute
6.5%
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