How many different types of eruptions were described and which was the most gentle type of eruption? 1 - 4; hawaiian
2 - 3; strombolian
3 - 4; vulcanian
4 - 4; plinian
WHICH ONE IS IT HURRY

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

Identify the type of synthetic material used in each object

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.