You are reading a research report summarizing the findings for a study of first-year teacher anxiety in the classroom. you read the following results: "teachers' perceptions of students' skill level was the most powerful predictor; it accounted for an additional 28% of the variance (ß = .35, p < .001)."from looking at the p value, you would concludea. that the alpha level was set too lowb. that the authors should have set an exact p valuec. that the result was statistically significantd. that the result indicates that there is a high chance of making a mistake

grav potential energy

d) physical means can be used to separate the components of air.

that would be because of both gravity and friction. so     c

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.