Mục đích của chiếu sáng đường phố

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Determine the maximum r-value of the polar equation r =3+3 cos 0

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 %.