PLEASE HELP I WILL MARK BRAINLIEST A light-year (ly) is the distance light travels in one year. If a star is 218 ly away from
Earth, how long does it take that star's light to travel far enough to reach Earth?
A) 218 min
B) 218 hours
C) 218 years
D) 218 light years

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

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=