Tom is teaching jenny how to ice skate. both skaters, who are about the same size, are on the ice and wearing their skates. to jenny get started, tom gives her a gentle push from behind. which of the following best describes what will happen next?
a.
jenny will move backward, and tom will move forward.
b.
jenny will not move, and tom will move backward.
c.
jenny will move forward, and tom will not move.
d.
jenny will move forward, and tom will move backward.

it is due to the halo effect as the impression of the boy created earlier.on the mind of the principle affected his decision

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals