Four particles, each of mass 0.16 kg are placed at the vertices of a square with sides of length 0.42 m the particles are connected by rods of negligible mass. this rigid body can rotate in a vertical plane about a horizontal axis a that passes through one of the particles. the body is released from rest with rod ab horizontal, as shown in the figure.(a) what is the rotational inertia of the body about axis a? (b) what is the angular speed of the body about axis a at the instant rod ab swings through the vertical position?

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

Which situation will produce the greatest change of momentum

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant