An elevator moves downwards at a constant speed. When drawing the free body diagram for this motion:

A) there is no upwards tension force, only a gravity force.
B) the upwards tension force should should be drawn the same length as the downwards gravity force.
C)The upwards tension force should be drawn longer than the downwards gravity force.
D) The upwards tension force should be drawn shorter than the downwards gravity force.

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

What are similarities and differences between refraction, reflection, diffraction and absorption?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc