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=

less than one you can't create energy

connect the batteries in series and hope

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force