Consider a spring with a rest length i and a spring constant k. this spring has a natural frequency $w0 = \sqt{k}$ (assume spring's mass to be m 1 suppose we place identical positive charges q on the ends of the spring. this system will two have a new natural frequency w now. derive the new expression for w just consider electrostatic effects and assume that the loads are small. you can of course also use harmonic approaches

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

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