Suppose the U. S. national debt is about $14 trillion. If payments were made at the rate of $3,500 per second, how many years would it take to pay off the debt, assuming no interest were charged? Note: Before doing these calculations, try to guess at the answers. You may be very surprised.

The variables for this experiment include mass, volume and the materials in the various balls, as well as their densities. in part iii, you will be investigating the questionable baseball. use the drop-down menus to complete the sentences and identify the independent and dependent variables. in part iii, the independent variable, the one that is intentionally manipulated, is . in part iii, the dependent variable, the one that you measure the response in, is

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

What happens to an isotope during radioactive decay?