Asmall block of mass 0.91 kg slides without friction on a horizontal table. initially it moves in a circle of radius r0 = 0.63 m with a speed 1.5 m/s. it is held in its path by a string that passes through a small hole at the center of the circle. the string is then pulled down a distance of r0 - r1 = 0.12 m, leaving it at a radius of r1 = 0.51 m. it is pulled so slowly that the object continues to move in a circle of continually decreasing radius. how much work was done by the force to change the radius from 0.63 m to 0.51 m? w =

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

The law of reflection states that the angle of reflection is equal to the angle of

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?