Two point charges are placed along a horizontal axis with the following values and positions: +3.8 µC at x = 0 cm and ?7.6 µC at x = 20 cm. At what point along the x axis is the electric field zero?
a. 10 cm
b. 8 cm
c. –5 cm
d. –48 cm
e. –68 cm
d
You might also like to view...
Estimate the time required to heat the center of a 1.5-kg roast in a 163°C oven to 77°C. State your assumptions carefully and compare your results with cooking instructions in a standard cookbook.
GIVEN
FIND
The time required to heat the roast
ASSUMPTIONS
SKETCH
The wavelength of the hydrogen line from level 1 to level 2 in a hot star is ____________ the wavelength of the same line in a cool star. The stars have the same radial velocities away from Earth
a. larger than b. the same as c. smaller than d. not enough information to answer
When discussing stellar lives, astronomers divide stars by mass into low-mass stars (masses similar to the Sun or lower) and high-mass stars (masses more than about 8 times that of our Sun). Which category includes stars that die in supernova explosions?
A) high-mass stars only B) low-mass stars only C) They both die in supernova explosions. D) Neither: Supernovas only occur in binary star systems.
Hydrocarbons with the general formula CnH2n+2 are called ______________
Fill in the blank(s) with correct word