A force of 1200N is creating a pressure of 60Pa on a surface. Calculate the area of the surface.

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Aballet student who learns with the of his instructor is demonstrating learning.

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v