Two long straight parallel wires are 3 cm apart, as shown in the Figure below. They carry current l1 = 3 A and 12 = 5 A in opposite directions. Draw a vector diagram and find the net magnetic field at point P. Give the answer in the format B = B_î + B, j. Hint: The direction of the magnetic field produced by a current is always perpendicular to the radial line from the current, i. e. directed along a tangent to an arc whose center is at the wire.

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Which articulations allow for greatest range of motion?

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.