What is the speed of a wave with a frequency of 2 hz and a wavelength of 87 m? 0.023 m/s 43.5 m/s 89 m/s 174 m/s

Which of the following is an example of motion in two dimensions?

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)

What structural formula represents 4 electrons shared between two atoms?