Please help. May you explain and demonstrate all. Thank you so much, as this will help me prepare for finals. I appreciate it you're the best!

a) A solid disk With a mass of 0.80 and radius of 12 cm is rotating at a rate of 2.6 rev/s when another disk with half the mass and half the radius that is not initially rotating is dropped on the rst disk. What is the new rate of rotation when both disks are rotating together at the same rate? How much rotational energy was lost? Describe the direction of the angular velocity and the angular moment of a rotating rigid object. If Wire with a radius of 1 mm has a length of 1 meter and is stretched a by 1 cm when a force of 1000 N is applied. What is Young's modulus for the wire? You are hanging Christmas ornaments outside of your house. Your Santa Claus hangs from a uniform beam and wires as shown. The beam has a length of 1.20 m and a mass of 4.00 kg and Santa has a mass of2.50 kg. What is the tension in the wire connecting the beam to the wall? For an object moving in a circular orbit around a planet, what is the ratio of the obj ect's total kinetic energy to the total energy and of the potential energy to the total energy? If an object is moving at one-half the escape velocity at a planet's surface, how high will it go above the planet with mass M and radius R? Find the acceleration of gravity on a planet With twice the mass and twice the radius of earth. Find the period of a satellite orbiting a planet 20,000 km from the center of a planet with twice the mass and half the radius of earth