Using a series circuit, remove one battery from the circuit by re-wiring. how did it change the brightness of the bulbs? how does the voltage of the batteries affect the brightness of the bulbs?

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

b. a lightning bug, plug of grass, and a worm