What is a living thing?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?