A light source of frequency of 5 x 1014 Hz (600 nm wavelength) strikes a metal surface, and a stream of electrons is ejected from the surface. If light of frequency 6 x 1014 Hz (500 nm wavelength) strikes the same metal surface, the maximum kinetic energy of the electrons emitted from the surface will (a) be greater. (b) be smaller. (c) be the same. (d) be unmeasurable

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.