How much power is required to lift a 12N box at 4.5m/s? A)2.6W
B)5.4W
C) 44W
D)54 W
pls add the formula you used too

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

What happens when you slowly pulled the carboard?