A student wants to use the lever to lift the book. At which point should she push downward to use the
least amount of force to lift the book?

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Draw the structure for 5-isopropyl-2-methyl-3-nonene

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.