As more and more energy is added to the atoms of a solid plastic, the plastic will first change into a. a harder solid. b. a thick liquid. c. a free-moving gas. d. a volatile plasma

If a balloon is taken outside on a very cold day, what will occur?

How can you increase the strength of an electromagnet?

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass