Need help with nothing

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader