Aball is thrown straight up from the ground with an initial velocity of 33.8 m/s; at the same instant, a ball is dropped from the roof of a building 26.3 m high. after how long will the balls be at the same height? the acceleration of gravity is 10 m/s 2 . answer in units of s.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.