Which example possesses mechanical potential energy?
a.
a taut guitar string
o
b. an oscillating pendulum
o
a roller coaster ride
o
d.
a child on a swing
o
e.
a speeding car

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Why is carbon ideal for making different compounds?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand