AAMC 8 question # 20

[njmd55]

---

Members do not see this ad.

Can someone please explain why the sphere would take longer to reach the bottom of the plane since the question says that the plane is 10m long. So wouldn't it take the same amount of time if you dropped the ball from a height of 10 m or rolled it down on a plane that's also 10m long???

 

[TalulaTalula]

Can someone please explain why the sphere would take longer to reach the bottom of the plane since the question says that the plane is 10m long. So wouldn't it take the same amount of time if you dropped the ball from a height of 10 m or rolled it down on a plane that's also 10m long???

in the passage, it says that ratio of the distance travelled and t^2 is a constant, and that this constant k is proportionate to the to the angle of the incline.

so if we had a very small angle for the incline, then k would decrease. if k decreases, then t would increase since we're keeping the distancethe same.

hope it helps.

 

[njmd55]

in the passage, it says that ratio of the distance travelled and t^2 is a constant, and that this constant k is proportionate to the to the angle of the incline.

so if we had a very small angle for the incline, then k would decrease. if k decreases, then t would increase since we're keeping the distancethe same.

hope it helps.

Ohhh I get it now! Thanks a lot for your help!

 

[surag]

oops! made a blunder

 

[DrCurious]

Can some one explain number 169 on 4R.

 

[deleted106503]

Can some one explain number 169 on 4R.

160 of 1000 exhibit (show) the recessive trait, so they're homozygous for the recessive trait. 160 of 1000 is 16%. p^2 + 2pq +q^2 = 1 where p is the the dominant allele and q is the recessive. q^2 = 16% so q = .4 and p = 1 - .4, which is .6

.6^2 + 2pq + .4^2 = 1 so the middle term is .48

Carriers of the trait are heterozygous, which is shown by the term 2pq. .48 of 1000 is 480.