Un corp este ridicat cu viteza constanta de-a lungul unui plan inclinat care formeaza cu orizontala unghiul alfa pentru care tangenta de alfa = 1,8. Randamentul planului inclinat are valoarea eta = 80% . Determinati coeficientul de frecare dintre corp și plan​. DAU COROANA !!​

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

This figure consists of a rectangle and semicircle. what is the perimeter of this figure use 3.14 for pi 60.84m 72.84m 79.68m 98.52m

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)