какой должна быть тангенциальная скорость Земли, чтобы человек на экваторе был невесомым

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Which of these is the best way to manage a natural resource

Use the illustration to describe how the electromagnetic spectrum changes as its frequency moves from radio waves to higher energy gamma waves in terms of wavelength and amplitude.