Your cousin has just retired and the family is gathering for a packing party to prepare her to move from Auckland to the Bay of Islands. (a) When walking to her place, you traverse four successive displacements as below: d1 = (−63i) m d2 = (−40 cos 40◦i − 40 sin 40◦j) m d3 = (+30 cos 50◦i− 30 sin 50◦j) m d4 = (−50j) m where i indicate east, j indicates north and the angles of 40◦ and 50◦ are angles to the east-west direction. (i) Sketch a map of the four successive displacement vectors.

answer: i pick a

explanation:

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 .

neither accurate nor precise.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.