A +4.0-?C charge is placed on the x axis at x = +3.0 m, and a ?2.0-?C 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
You might also like to view...
An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2 To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom
If the depth of the crater is 120 m, how long does it take for the rock to fall? A) 3.04 s B) 12.2 s C) 29.3 s D) 32.1 s E) 37.5 s
All meteorites collected on Earth come from asteroids or comets
Indicate whether the statement is true or false
A flat plate is in a solar orbit 150,000,000 km from the sun. It is always oriented normal to the rays of the sun and both sides of the plate have a finish which has a spectral absorptance of 0.95 at wavelengths shorter than 3 ?m and 0.06 at wavelengths longer than 3 ?m. Assuming that the sun is a 5550 K blackbody source with a diameter of 1,400,000 km, determine the equilibrium temperature of the plate.
GIVEN
• A flat plate in solar orbit oriented normal to the rays of the sun
• Distance from the sun (R) = 150,000,000 km = 1.5 × 1011 m
• Spectral absorplatace (??) of both sides ??1 = 0.95 for ?1 < 3 ?m ??2 = 0.06 for ?1 > 3 ?m
FIND
• The equilibrium temperature of the plate (Tp)
ASSUMPTIONS
• The sun is a black body at Ts = 5550 K
• Sun diameter (Ds) = 1,400,000 km = 1.4 × 109 m
SKETCH
As drops fall from a leaky faucet they become
A) closer together as they fall. B) farther apart as they fall. C) a fixed distance apart as they fall. D) none of the above