Letting d d represent the maximum displacement, the extremes of the block's motion are at position a, where x = − d x=−d, and at position c, where x = d x=d. at what point in the motion is the speed of the block at its maximum?

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.

no

explanation:

no i dont know how to solve this you should probably try to google the answer

helium

oxygen

neon

sodium

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.