A particular radio station broadcasts radio waves at 100MHz if radio waves travel at the speed of light (300 million m/s) then what is wavelength of the radio waves that the station is broadcasting?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

What’s #16 asking and how do i solve it?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)