<span>The answer to this question is that non metals are
volatile. Volatile means evaporating easily. Non metals have the
characteristics and properties of being brittle and poor conductors of heat and
electricity. Non metals are also good oxidizing agents and physically they may
be in liquid, solid or gas state. Examples of non metals are carbon, sulfur,
argon, neon, and hydrogen.</span>
The answer is 12.5 kg because 250N / 20m/s^2
I hope that helped
Answer:
Explanation:
The difference of electric potential between two points is given by the formula 
, where <em>d</em> is the distance between them and<em> E</em> the electric field in that region, assuming it's constant.
The electric field formula is 
, where <em>F </em>is the force experimented by a charge <em>q </em>placed in it.
Putting this together we have 
, so we need to obtain the electric force the charged ball is experimenting.
On the second drop, the ball takes more time to reach the ground, this means that the electric force is opposite to its weight <em>W</em>, giving a net force 
. On the first drop only <em>W</em> acts, while on the second drop is <em>N</em> that acts.
Using the equation for accelerated motion (departing from rest) 
, so we can get the accelerations for each drop (1 and 2) and relate them to the forces by writting:
These relate with the forces by Newton's 2nd Law:
Putting all together:
Which means:
And finally we substitute:
Which for our values means:
Answer:
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Explanation:
