What is the knetic enetgy of 1000kg roller coster that is moving with a speed of 20.0 m/s

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

Need ! asap will mark 10 pts 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

Complete each row of the table below by filling in the missing prefix or missing exponent.