A glass rod rubbed with silk acquires a charge of +1.1×10?9 . Is the charge on the silk positive, zero, or negative? Is the charge on the silk positive, zero, or negative? positive zero negative Why? Essay answers are limited to about 500 words (3800 characters maximum, including spaces). What is the charge on the silk? Express your answer using two significant figures. How many electrons have been transferred to the silk? Express your answer using two significant figures. How much mass has the glass rod gained or lost? Express your answer using two significant figures.