If you hold the Moon sphere out in front of you at arm's length, will the distance between the Moon sphere and your head be "to scale"

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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=

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m