Alejandro used a pulley to lift a heavy car engine. He applied and input force of 200 n, and the output force of the pulley was 3000 n. What was the mechanical advantage of the pulley?

true is the answer : )

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.