Abumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. the spring constant is 5000 n/m. if the cart is moving at a speed of 8 m/s towards a solid barrier, and upon impact, is momentarily brought to rest. a) how much elastic potential energy will be stored in the spring when it is fully compressed? b) what is the average force exerted by the spring if it is compressed by a distance of 0.2 meters?

What is the most useful equation for electric power?

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in

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.