Abeam of laser light is ab a beam of laser light is absorbed by a collection of ground-state hydrogen atoms. after the absorption, the excited hydrogen atoms emit three different wavelengths when they relax back to the ground state. determine (1) the quantum number of the state after the excitation, (ii) the wavelength of the laser light, and (iii) the largest emission wavelength.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?