A small immersion heater is rated at 350 W. Estimate how long it will take to heat a cup of water (assume this cup contains 250 mL) from 20oC to 60oC.

its c i just checked it

the maxium height is 34m/s

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