I WILL GIVE BRAINLIEST Which two factors are needed to calculate the velocity of an object?
A. Speed
B. Mass
C. Direction
D. Acceleration

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 radioisotope is used in dating geological formations?

Cho is making a bar graph showing the amount of money spent on health care between 1999 and 2005. the dependent variable is the: a: money spent b: year c: number of patients