The reaction shown below is used in the production of steel. it is an exothermic reaction. an engineer thinks that by finding the correct catalyst, he can reduce the amount of energy released by the reaction. will his plan have the desired effect? explain your answer. fe3o4(s) + 4c(s) → 3fe(s) + 4co(g

Complete the sentence to describe how light behaves as it relates to its nature (waves or particles). light travels as blank and interacts with matter as blank

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?

In what direction does the medium move relative to the direction of the wave? explain.