POSC 3616 Lecture Notes - Lecture 9: Angular Momentum, Thermal Energy, Thermonuclear Weapon
14 Mar 2016
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Interacting objects exchange momentum through equal and opposite forces. c. What keeps a planet rotating and orbiting the sun: the gravity of the sun keeps the planets in orbit and rotating b. In order to change an angular momentum, the object has to have a torque acting on it. Basic types of energy: kinetic (motion) : energy from moving, kinetic =( )mv^2, radiative (light, potential (stored, energy can change type, but cannot be created or destroyed. Thermal energy: the collective kinetic energy of many particles (for example, in a rock, in air, in. Temperature scales: kelvin, freezing is at 273, boiling is at 373, fahrenheit, celsius. Gravitational potential energy: on earth, depends on, object"s mass (m, strength of gravity (g, distance object could potentially fall b. In space, an object or gas cloud has more gravitational energy when it is spread out than when it contracts: a contracting cloud converts gravitational potential energy to thermal energy.
