Recent content by noeinstein

Thank you much sir for your time!

Homework Statement For women's volleyball the top of the net is 2.24 m above the floor and the court measures 9.0 m on each side of the net. Using a jump serve, a player strikes the ball at a point that is 3.05 m above the floor and a horizontal distance of 8.3 m from the net. (a) If...

correction "right spot". I've been workin on this asssignment all day. I'm losing my attention to detail. Probably why I'm having trouble. lol

isn't k irrelavtant considering Cz is zero

looks like i was in the write spot sorry. checking...

For the following three vectors, what is 3C·(2A x B )? A = 2.00i + 3.00j - 9.00k B = -3.00i + 3.00j + 2.00k C = 5.00i - 8.00j 2AxB=(12+54)+(8-54)+(12-18) 2AxB=66i - 46j -6k 3C·(2AxB)= (66x15)i + (-46x-24)j = 2094 the app is telling me it's incorrect. I don't know what...

:d.. dah

Never mind. Got it. I switched the values of ay and by. Thanks.

because the online assignment is giving me a big fat red X. lol

I went over it again and got the same answer.

Use the definition of scalar product, a·b = ab cos , and the fact that a·b = axbx + ayby + azbz (see Problem 46) to calculate the angle between the two vectors given by a = 2.0 i + 6.0 j + 2.0 k and b = 4.0 i + 3.0 j + 6.0 k. AdotB= 8i + 18j + 12k A=sqrt(2^2 + 6^2 + 2^2)=6.63 B=sqrt(4^2 +...

Geeze no kidding! dahh. Thanks

They have the same/opposite direction?

Homework Statement Given that A = 2i + 4j, evaluate each of the following. (Hint: This question can be answered without computation.) (a) What is AxB when B = 8i + 16j? (b) What is AxB when B = -8i - 16j? Homework Equations AxB=(Axi + Ayj) x (Bxi +Byj) =(AxBx)(i x i)...