Q is directly proportional to the square of r. q=3 when r=4?
回答 (3)
2012-12-16 11:07 am
✔ 最佳答案
q = kr^2 where k is not zero.When r = 4, q = 3. This means
3 = k(4)^2
k = 3/16
Therefore, q = 3/16 * r^2.
2012-12-16 7:06 pm
First find k
Q = kr²
3 = k 4²
3 = 16K
k = 3/16
k = 0.1875
Formula now is Q = 0.1875r²
Q = kr²
3 = k 4²
3 = 16K
k = 3/16
k = 0.1875
Formula now is Q = 0.1875r²
2012-12-16 7:07 pm
q = kr^2
when r = 4, q = 3
3 = k*16
k = 3/16
when r = 4, q = 3
3 = k*16
k = 3/16
收錄日期: 2021-05-01 14:43:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121216030433AAxLNIw