Part I: Calculation. You may use a calculator, but you must show your work. 3 points each. 1. Mercury is a liquid metal with a density of 13.6 gem'. What is the mass of 25 cm of mercury? 2. Two blocks are on a table. Block A has a volume of 30 cm and a mass of 81 g. Block B has a volume of 50 cm and a mass of 135 g. Which block has the greater density?12. Calculate the force of gravity between Earth (m = 6.0 x 10"* kg) and the Moon (m = 7.4 x 10" kg), using the average Earth-Moon distance of 3.8 x 10 m.14. Calculate the current in the 240 0 filament of a bulb connected to a 120 V line.18. List and describe all the forces acting on the box below