Afisherman’s scale stretches 3.3 cm when a 2.6-kg fish hangs from it. the fish is pulled down 2.5 cm more and released so that it oscillates up and down with a simple harmonic motion (shm). ? (a) what is the spring stiffness constant? (b) what is be the amplitude? (c) what is the period and frequency of oscillations?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Does current flow through or across a resistor?

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.