A point charge, q = +4.7 uC, is
ed at each corner of an equilateral triangle with
des 0.21 m in length. (a) What is the magnitude of the
Sectric field at the midpoint of any of the three sides of
the triangle? (b) Is the magnitude of the electric field
at the center of the triangle greater than, less than, or
the same as the magnitude at the midpoint of a side?
Explain.

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.