Select any and all of the following statements that are false. select all that apply. a : stationary electric charges act like magnetic poles. b : magnetic monopoles are only found at the core of stars. c : magnetic poles always come in pairs. d : stationary electric dipoles have magnetic fields. e : magnetic fields are always static.

In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i. e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?

What are atoms of the same element with varying number of neutrons

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius