A2.00-kg mass vibrates according to the equation
.x = 0.650 cos 7.401, where .. is in meters and 7 in seconds
determine (a) the amplitude, (b) the frequency. (c) the
total energy, and (d) the kinetic energy and potential
energy when r = 0.260 m.

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Aplane's average speed between two cities is 600 km/h. if the trip takes 2.5 hours, how far does the plane fly?