Light ray 1 strikes the smooth surface of a mirror as shown below. Which of the following is the reflected ray for ray 1?

Ray 2

Ray 3

Ray 4

Ray 5

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 hidden during a lunar eclipse? isn't the moon hidden?

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net