I have a test for my finals can y’all help me?

Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole