Atomic theory explains that all matter is made up of tiny particles called atoms. This scientific theory was developed before scientists could view individual atoms with powerful microscopes. How could the development of a new technology affect this theory?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.