The mass of block B is 4 kg, the mass of block A is 3 kg, and the angle θ = 60°. The surface along which block A slides is frictionless. The pulley can be modelled as a uniformly dense solid cylinder rotating around an axis through its center. The mass and radius of the pulley are 2 kg and 5 cm, respectively. The two springs are massless and have spring constants k1 = 200 J/m2 and k2 = 600 J/m2. What is the angular frequency (in rad/s) of simple harmonic oscillations of this system?

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.