A charge Q is placed on the x axis at x = +4.0 m. A second charge q is located at the origin. If Q = +75 nC and q = ?8.0 nC, what is the magnitude of the electric field on the y axis at y = +3.0 m?
a. 19 N/C
b. 23 N/C
c. 32 N/C
d. 35 N/C
e. 21 N/C
b
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Life probably did not originate on the land surface because
A) impacts would have destroyed any life that appeared B) water was not plentiful on land C) there was no ozone layer to shield out harmful UV rays D) organic materials were not present on the land
A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it
(a) What is Young's modulus for the material from this wire is made? (b) What is the effective spring constant for the stretching wire? What will be an ideal response?
A + 5.0-?C charge is moved from a negative to a positive plate of a parallel plate capacitor. In moving this charge 0.30 mJ of energy is used. What is the potential difference between the plates of this capacitor?
A) 60 V B) 81 V C) 55 V D) 23 V E) 0 V
Heat (Q) is the amount of _____________that is transferred from an area at high temperature to an area at low temperature.
Fill in the blank(s) with the appropriate word(s).