Biến dạng của đàn hồi của vật rắn là gì? Viết công thức xác định ứng suất và nói rõ đơn vị đo của nó

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.

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 %.