1. Four forces of magnitudes 1 N, 2 N, 3 N and 4 N are acting in order along sides AB, CB, DC and DA of a rectangle respectively. The magnitude of
resultant is

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?