The left end of a long glass rod, 8.00cm in diameter, has a convex hemispherical surface 4.00cm in radius. the refractive index of the glass is 1.60.
a) determine the position sb of the image of an object placed in air on the axis of the rod infinitely far from the left end of the rod. sb=

b) determine the position sb of the image if an object is placed in air on the axis of the rod 18.0cm to the left of the end of the rod. sb=

c) determine the position sb of the image if an object is placed in air on the axis of the rod 4.00cmfrom the left end of the rod. sb=

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

What determines the amount of inertia an object has