Form 21 (21-22) / 30 of 30 A screwdriver can be used as a lever to pry open lids. A screwdriver is used to open a paint lid. If an effort force of 50 N is

applied to the screwdriver, and the mechanical advantage of using that screwdriver is 10, what is the resulting resistance

force on the lid?

A 500 N

B 5N

C. 40 N

D. 0.2 N

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?