A long straight metal rod has a radius of 2.0 mm and a surface charge of density 0.40 nC/m2 . Determine the magnitude of the electric field 3.0 mm from the axis
a. 18 N/C
b. 23 N/C
c. 30 N/C
d. 15 N/C
e. 60 N/C
C
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A parallel plate capacitor has plates each of area 100 cm2 and with separation 0.25 mm. What is its capacitance?
A. 40 nC
B. 0.35 nC
C. 4.4 
F
D. 88 pdf
E. 88 F
What is the best way to determine a galaxy's redshift?
A) Find the galaxy's apparent distance, and look up the redshift based on Hubble's Law. B) Find the color of the galaxy, and estimate its distance based on how red the galaxy is. C) Measure the magnitude of the galaxy, estimate its distance, and calculate its redshift using Hubble's Law. D) Take a spectrum of the galaxy, and measure the difference in wavelength of spectral lines from the wavelengths of those same lines as measured in the laboratory.
A charged particle creates an electric ________ in the space around it
Fill in the blank(s) with correct word
The process of losing water from the soil to the air from both the ground and from plants is called
What will be an ideal response?