What is the definition of spectrum

Spectrum can can different meaning depending on the specific situation. But overall, a spectrum is a large amount of or infinite collection of values that exist withing a certain range. For example, light wavelengths exist on a spectrum becuase there are an infinite number of different wavelengths.

Hope this helps.

Spectrum is array of entities or light waves and particles

angular velocity at t=14-s is w = 29.98-rad/s

Explanation:

for constant angular acceleration,

∝ = Δw / Δt Δ = (w-wi)/(t-ti)

∝ = 15 - 0 / 7 - 0

∝ = 2.14-rad/s²

now again applying formula,

∝ = Δw / Δt Δ = (w-wi)/(t-ti)

w = (t-ti)∝+wi

w = (14 - 7)(2.14) + 15

w = 29.98-rad/s