Renewable energy sources

:

a)
are constantly replenished by nature

b)
protect the ozone layer

c)
are easily available anywhere on earth

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value