Review. A storm cloud and the ground represent the plates of a capacitor. During a storm, the capacitor has a potential difference of 1.00 3 108 V between its plates and a charge of 50.0 C. A lightning strike delivers 1.00% of the energy of the capacitor to a tree on the ground. How much sap in the tree can be boiled away? Model the sap as water initially at 30.08C. Water has a specific heat of 4 186 J/kg ? 8C, a boiling point of 1008C, and a latent heat of vaporization of 2.26 3 106 J/kg.
Physics 211, Week 4 Notes PSU: Fall term Physics is a study of what can cause an object to accelerate. That cause is a Force. Force: a push or pull on an object Newtonian Mechanics: relation between a force and the acceleration it causes 1. Newton’s first law: If no force acts on a body, the body’s velocity cannot change; that is, the body cannot accelerate (object at rest, with no additional force, stays at rest). If no net force acts on a body (Fnet=0) the body’s velocity cannot change 2. The net force on a body is equal to the product of the body’s mass and it’s accelerating I. Force = Mass * Acceleration (F=m*a) II. Force ne