How do our brains interpret the different frequencies of visible light?

Explain the consequences of this addiction to the brain tissue

Determine the maximum r-value of the polar equation r =3+3 cos 0

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.