Given: each block has masses m1 = m2 = m3 = m and the coefficient of kinetic friction is µ. the magnitude of f equals twice the total frictional force. apply a horizontal force f in pushing an array of three identical blocks in the horizontal plane (see sketch). m1 m2 m3 f µ find the force f23 with which the second block is pushing the third block.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad

Which statements did both aristotle and ptolemy assume? check all that apply.