3. Shortwave radio is broadcast between 3.50 and 29.7 MHz, To what range
of wavelengths does this correspond? Why do you suppose this part of
the spectrum is called shortwave radio?

Which accounts for an increase in the temperature of a gas that is kept a constant volume

The mantle is made up of which structural zones?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.