Physics, 27.11.2019 05:31, tintinayeir2567
Two blocks are connected by a rope that passes over a set of pulleys. one block has a weight of 412 n, and the other has a weight of 908 n. the rope and the pulleys are massless and there is no friction.
(a) what is the acceleration of the lighter block?
(b) suppose that the heavier block is removed, and a downward force of 908 n is provided by someone pulling on the rope, as part b of the drawing shows. find the acceleration of the remaining block.
(c) explain why the answers in (a) and (b) are different.
Answers: 1
Physics, 22.06.2019 10:50, afonseca73
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 19:30, FireFlight
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
Two blocks are connected by a rope that passes over a set of pulleys. one block has a weight of 412...
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