Susan's 12.0 kg baby brother paul sits on a mat. susan pulls the mat across the floor using a rope that is angled 30∘ above the floor. the tension is a constant 29.0 n and the coefficient of friction is 0.180. use work and energy to find paul's speed after being pulled 2.70m .express your answer with the appropriate units.

1.71 m/s

Explanation:

Given

mass of Susan

Inclination

Tension

coefficient of Friction

Resolving Forces Along x axis

where  

since there is no movement in Y direction therefore

and

Thus

Work done by applied Force is equal to change to kinetic Energy

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: