Which shape is most like an ellipse? Question 10 options: A. square B. circle C. rectangle D. oval

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

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