A +20-nC point charge is placed on the x axis at x = 2.0 m, and a -25-nC point charge is placed on the y axis at y = -3.0 m. What is the direction of the electric field at the origin?
a. 209°
b. 61°
c. 29°
d. 241°
e. 151°
A
You might also like to view...
The accretion disk of a black hole is typically very hot. What kind of telescope would we use to observe it at its strongest wavelength?
A. a space-based radio telescope B. a ground-based gamma-ray telescope C. a ground-based X-ray telescope D. a space-based X-ray telescope E. None of these choices are correct.
________ form when galaxies collide and ________.
A. Quasars; emit large amounts of heat and radio waves B. Starburst galaxies; star formation is triggered, making them very bright C. S0 galaxies; all their stars are destroyed D. Starburst galaxies; all their stars are destroyed
Assuming that the wave speed varies little when sound waves are traveling through a material that suddenly changes density by 10%, what percentage of the incident wave intensity is reflected?
a. < 1% b. 7.0% c. 10% d. 20% e. 25%
The U.S. has one of the highest energy use rates per person in the world
What will be an ideal response?