The period of revolution (t) of a planet moving round the sun in a circular orbit depends upon the radius (r) of the orbit, mass of

the sun (M) and gravitational constant (G). Show

dimensionally that t² x R³, hence find the numerical value of t

if r= 6.4 μm, M=2000km, G= 6.67 x 10-11Nm²kg ²,

constant of proportionality = 0.5​

Can you match these to the correct definition

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.

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical