PLEASE help if you can!! Most electric motors use electromagnets instead of permanent magnets. State 3 of the features of an electromagnet which control the strength of the magnetic field obtained​

Write a question about how changing temperature affects the gas inside the sports ball

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Smallest intensity of a stimulus that you can detect 50 percent of the time is