1A 0.2 kg metal ball is tied to a string 0.6 m long. The bal makes 20 revolutions in 60 sec. Calculate the a) Velocity b)centripetal acceleration c) the centripetal force to keep it moving in a circular motion

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explanation:

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j