4 point charges of 50 [nC] each are located at the four corners of a square lying in the x-y plane and centered on the origin (0, 0, 0) in free space. The diagonals of the square are of length 2 m and lies along the x and y axes. (a) Calculate the total force F on each of the charges by the other three charges, (b) What is the electric potential at the center of the square due to all four charges. (c) What is the electric field intensity at the center of the square due to all four charges.

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

The law of reflection states that the angle of reflection is equal to the angle of

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical