4. What is the magnitude and direction of the forces acting between two protons that are 1.7 x 10^-6 m apart? The charge on a proton is 1.6 x 10^-19 C. k=8.99 x 10^9 N*m2/C2
F =k(q1, x q2/r^2

*LOOK AT PICTURE FOR ANSWER CHOICES!

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

Select the correct answer. what does the process of natural selection involve?

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.