What are the best example of an isolated system?

Which of the followning is the most basic function of energy? How many pounds does 312 grams equal? What is the state of the ice lollies when they are removed from the freezer? How does absorption explain why light becomes dimmer as it travels through the air? How many kiloliters are in 1200000 centiliters? Is a coin a condutor or insulators? Acceleration is defined as a change in velocity over time . If a runner increases velocity from 2 ms to 4 ms over a period of of A seconds what is her acceleration? Is the potato best conductor of electricity than a lemon? What are the difference between yielding and sleeping? What kind of simple machine is a peeler? 1 If a longer wavelength of light is used in an interference pattern do the fringes have a bigger separation? A billiard ball will stop short when it collides head-on with a ball at rest the ball cannot stop short however if the collision is not exactly head on why? How is the motion of particles in a solid a liquid and a gas different? What does the term overseas moving mean? What is the gass of hotness or coldness? What implication do the study of light tell us? How would you estimate the size of object viewed under high power objective lens 40 times if you were given the size of the field diameter when using low power objective lens 4 times? Which type of refrigerator freezer is most energy efficient? What forms of energy are in a microwave? How many pounds in 8.9 kilograms?

What are the best example of an isolated system?