Astudent on a piano stool rotates at a rate of 2.85 rev/s. the student holds a 1.25kg mass in each outstretched arm, 0.76m from the axis of rotation. the combined momment of inertia of the student and the stool without the two masses, is 5.45kg*m^2, a value that remains constant. as the student pulls his arms inward, his rate of rotation increases to 3.50 rev/s. how far are the masses from the axis of rotation at this time?

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

asthenosphere and convection

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

scientific laws are the result of testing theories and proving them to be facts.