Josh has a toy car of mass 3 kg tied to a string of length 2 m. he ties the string to a pole and has the toy car drive in a circle around the pole at a speed of 3 m/s.

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000