Three point charges are placed on the x-axis. a charge of +2.0 μc is placed at the origin, -2.0 μc to the right at x = 50 cm, and +4.0 μc at the 100 cm mark. what are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

- q1 = 6.0 nc is at (0.30 m, 0); q2 = -1.0 nc is at (0, 0.10 m); q3 = 5.0 nc is at (0, 0). what is the magnitude and direction of the net force on the 5.0 nc charge?

- a 5.0-c charge is 10 m from a small test charge. what is the magnitude and direction of the electric field at the location of the test charge?

- three 3.0 μc charges are at the three corners of a square of side 0.50 m. the last corner is occupied by a -3.0 μc charge. find the electric field at the center of the square.

What is the approximate amplitude of this wave a.10 seconds b.15 centimeters c.30 centimeters d.15 seconds

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current