Velocity can be either positive or negative, depend- ing on the direction of the displacement. The time
interval, At, is always positive.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.