Two slits spaced 0.46 mm apart are placed a distance 76 cm from a screen. What is the distance between the second and third dark lines of the interference pattern on a screen when the slits are illuminated with coherent light with a wavelength of 530 nm

You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

Observations show that interstellar clouds can have almost any shape and