A +4.0-mC charge is placed on the x axis at x = +3.0 m, and a -2.0-mC charge is located on the y axis at y = -1.0 m. Point A is on the y axis at y = +4.0 m. Determine the electric potential at point A (relative to zero at the origin)
a. 6.0 kV
b. 8.4 kV
c. 9.6 kV
d. 4.8 kV
e. 3.6 kV
C
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Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnitude of the magnetic field midway between the two wires? (?0 = 4? × 10-7 T ? m/A)
A) 1.0 × 10-5 T B) 2.0 × 10-5 T C) 3.0 × 10-5 T D) 4.0 × 10-5 T E) 5.0 × 10-5 T
Black light is a common name for the region of the EMR spectrum known as ______________
Fill in the blank(s) with correct word
The EPA primary standards guarantee that no person can be harmed by air pollution
What will be an ideal response?
Two ice skaters, one with a mass of 45 kg and the other with a mass of 60 kg, push off against one another starting from a stationary position. After they have pushed off, the relative speed at which they separate is 0.600 m/s. What is the speed of the 60-kg skater?
A) 0.343 m/s B) 0.257 m/s C) 0.375 m/s D) 0.750 m/s E) 0.225 m/s