In amplitude modulation, which wave property remains constant?

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

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 are the similarities & differences between a thermistor and a light dependent resistor in physics?