Which of the following is not an example of a contact force

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine

At which location in earth’s interior does the top density continue to increase as thickness decreases?

What element does susan b. anthony include in this passage to strengthen her argument?