A ray of visible light has a frequency of 4.2 x 1014 Hz. Use 3 x 108 m/s as the speed of light. Calculate the above 4.2 x 1014 Hz light’s wavelength. *

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?