1.21 (this needs twenty so i have to write so yeah deal with it)
Answer:

Explanation:
The equation of charge on the capacitor given its capacitance and a voltage applied to it is Q=CV.
Our capacitance is expressed in <em>microfarads</em>, where micro stands for
, so in S.I. we sill have:

Where the results has been expresed with <em>two significant figures</em>.
Answer:
the total mass is 35 kg
k.E = 1/2 mv2
43.76 =1/2 v2
v2=2×43.76
Explanation:
v=radicls 87.52 which is equal to 9.5 m/s