Please I need help with these questions 1. What are the units for density?

2. Define slope generally. Describe slope have units in this case? If so, what are they?

3.What is the density of the object?

4. Why use a line rather than a single data point?

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