Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0cm, what is the electric force between them? A) 16 N
B) 1/16 N
C) 4.0 N
D) 1/4 N
E) 2.0 N

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?