Tutors Answer Your Questions about Vectors (FREE)
Question 616179: Please help me solve this question:
An airplane flying at an altitude of 3600 feet is dropping aid supplies. The path of the plane is parallel to the ground at the time of the supplies are released and the plane is traveling at a speed of 330 mph. Note: 5280 feet is 1 mile.
a) Write parametric equations that represent the path of the supplies
b) How long will it take for the supplies to reach the ground?
c) How far will the supplies travel horizontally before landing?
Click here to see answer by josmiceli(19441)   |
Question 633726: The magnitude and directions of u and v are given. Find vector w's polar coordinates.
u: magnitde 23, bearing 215°
v: magnitude 14.5, bearing 105°
w: u + v
A:(22.7, 77°)
B:(77, 22.7°)
C:(22.6, 177.9°)
D:(177.9, 22.6°)
Click here to see answer by stanbon(75887) |
Question 633728: Can you help me with this one? Solve the ordered triple of point H. A is (5,0,0) E is (0,0,4) G (0,3,0) Q is (0,3,4) R is (5,3,0) and p is (5,0,4)
Click here to see answer by Edwin McCravy(20054)  |
Question 665255: Can someone please help me with this i really don't know how to do vectors, i have tried part a but i dont know if its right.
Consider the two vectors a = î + ĵ and b = 2î – ĵ .
(a) Calculate a + b and a – b .
a + b = 2 î^2 + ĵ^2
a – b = 2
(b) On a Cartesian plane, illustrate the vector addition a + b and the vector subtraction a – b. Clearly label your diagrams with all its appropriate vectors.
(c) Calculate the magnitude of a and the magnitude of b.
(d) Find the scalar product a•b.
(e) Find the orthogonal projection of vector a onto vector b. That is, find the vector projb a .
Click here to see answer by lynnlo(4176) |
Question 665255: Can someone please help me with this i really don't know how to do vectors, i have tried part a but i dont know if its right.
Consider the two vectors a = î + ĵ and b = 2î – ĵ .
(a) Calculate a + b and a – b .
a + b = 2 î^2 + ĵ^2
a – b = 2
(b) On a Cartesian plane, illustrate the vector addition a + b and the vector subtraction a – b. Clearly label your diagrams with all its appropriate vectors.
(c) Calculate the magnitude of a and the magnitude of b.
(d) Find the scalar product a•b.
(e) Find the orthogonal projection of vector a onto vector b. That is, find the vector projb a .
Click here to see answer by Alan3354(69443)  |
Question 717890: There is this homework problem I have for Pre-Algebra. It is on scale factors. This is the problem:
What scale factor was used to build a 55 ft wide billboard from a 25 in. wide model?
I tried to write a proportion (model to actual), and I ended up getting 5 in. to 11 ft. I remember my teacher saying that when doing a scale factor, and it is inches to feet, then it has to be a certain number of inches to 1 ft. He said the exception is that if the scale factor ends up like 1/6 in. to 1 ft because there is no 1/6 inch mark on a ruler. Now, I am confused as to how this problem should be done, and I would be very grateful if someone were to clearly explain how to do this problem.
By the way, I am sorry if the category for this question is incorrect.
Click here to see answer by stanbon(75887) |
Question 735088: Am I allowed to simple ask for assistance into understanding the concept of vectors in Mathematics? Does this site work like that? I kind of missed the whole stage of learning about vectors and I'm unable to do numerous questions due to lack of knowledge and understanding. What are vectors and what is a vector space? How would one, in a simple generalised form of instruction, go about trying to prove whether something is or isnt a vector space? So lost.
Click here to see answer by rothauserc(4718)  |
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