Which of these is the best explaination for why two negatively charged balloons move apart without ever touching?
a)electrons from the one balloon jump to the other and push it, without ever touching it.
b) charged objects send little lightning bolts of electrons across the space between two balloons.
c) the space between objects is actually filled with charged particles that all interact.
d) electric charges have electric fields surrounding them to allow them to exert forces on other objects without touching them.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?