A particle (charge = +40 ?C) is located on the x axis at the point x = ?20 cm, and a second particle (charge = ?50 ?C) is placed on the x axis at x = +30 cm. What is the magnitude of the total electrostatic force on a third particle (charge = ?4.0 ?C) placed at the origin (x = 0)?
a. 41 N
b. 16 N
c. 56 N
d. 35 N
e. 72 N
c
You might also like to view...
What does a breeder reactor do?
a. Produces plutonium from uranium and thereby creates more nuclear fuel than it uses. b. Creates independent chain reactions that then separate from their parents and become new energy sources. c. Uses controlled rates of reaction to conserve nuclear fuel. d. Creates its own neutron bombardment beam out of the neutrons that escape from the uranium as it decays. e. Creates its own control rods out of the lead resulting from uranium decay.
Why don't we see hydrogen Balmer lines in the spectra of stars with temperatures of 45,000 K?
a. There is no hydrogen in stars this hot. b. The stars are hot enough that most of the hydrogen is ionized and the atoms cannot absorb energy. c. These stars are so cool that nearly all of the electrons in the hydrogen atom are in the ground state. d. Stars of this temperature are too cool to produce an absorption spectrum. e. Stars of this temperature are too hot to produce an absorption spectrum.
A total lunar eclipse is
a. visible only from the path of totality. b. visible only during a new moon. c. visible to all observers on the side of Earth from which the moon would be visible at that time. d. an opportunity to study the corona of the sun. e. none of the above
Briefly describe Mercury's geological history through the four steps of planetary development
What will be an ideal response?