A light wave has a wavelength of 0.015 m. What is the frequency of this light wave? (1 point)
2 x 10^10 Hz
5.5 x 10^12 Hz
1.9 x 10^11 Hz
8 x 10^10 Hz

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

What is the magnitude of the resultant vector round your answer to the nearest tenth

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called