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The magnitude of the vector from P = (x1, y1, z1) to Q = (x2, y2, z2)
is sqrt[(x2 - x1)2 + (y2- y1)2 + (z2 - z1)2]
(Pythagoras in 3-D).
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∙ 11y ago
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How do you find the magnitude of a vector?
The magnitude of a vector can be found by taking the square root of each of the vector components squared. For example, if you had the vector 3i+4j, to find the magnitude, you take sqrt ( 3²+4² ) To get: sqrt ( 9+16 ) sqrt ( 25 ) = 5 Works the same in 3D or more, just put all the vector components in.
How to find the area of a parallelogram with given vertices's in a 3D figure?
You need to take the magnitude of the cross-product of two position vectors. For example, if you had points A, B, C, and D, you could take the cross product of AB and BC, and then take the magnitude of the resultant vector.
Can a component of a vector be greater than the vector's magnitude?
No. If the vector is 2D then it's magnitude is (x^2+y^2)^0.5 where x and y are the components and ^0.5 means take the square root. In 3D this becomes (x^2+y^2+z^2)^0.5 etc. Thus the magnitude is always at least as big as one of the components. Here's an example of a 3D vector: (3,4,5) |(3,4,5)|=(3^2+4^2+5^2)^0.5=(9+16+25)^0.5=50^0.5=7.07... If y and z were 0: (3,0,0) |(3,0,0)|=(3^2+0^2+0^2)^0.5=(9+0+0)^0.5=9^0.5=3 ie the magnitude is the same size as x. You can also consider this geometrically. A vector is an arrow and the magnitude represents the length of the arrow. Vector addition is the 'adding' of these arrows so (3,4,5)=(3,0,0)+(0,4,0)+(0,0,5). Clearly the length of an arrow built of three smaller ones can't be less than any one of them.
Dot and cross product between 3D and 4D?
here are the possible answers: A) A tridimensional vector B) A 4D vector C) A 5D vector D) An scalar number E) It is undefined
How many possible components can a single vector be resolved?
A vector can be resolved into infinitely many sets of components in both 2D and 3D space.
How do you find the magnitude of a vector?
The magnitude of a vector can be found by taking the square root of each of the vector components squared. For example, if you had the vector 3i+4j, to find the magnitude, you take sqrt ( 3²+4² ) To get: sqrt ( 9+16 ) sqrt ( 25 ) = 5 Works the same in 3D or more, just put all the vector components in.
Is the magnitude of instantaneous velocity always equal to the instantaneous speed?
Because speed is the magnitude of the velocity vector. The velocity consists of the speed and the direction, and the whole thing can be embodied in a 3D vector. If you like the velocity is the magnitude (the speed), which is a scalar (just a real number), multiplied by a unit vector in the right direction.
How do the magnitudes and direction pair?
Magnitude and direction are related in vector quantities. The magnitude represents the size of the vector, while the direction indicates the orientation of the vector in space. In a 2D plane, direction can be specified by an angle relative to a reference axis, while in 3D space, direction can be defined by using angles or unit vectors along the coordinate axes.
Are needed to describe a vector?
To describe a vector, you need both magnitude (size or length) and direction. In a 2D plane, this could be represented as an arrow with a certain length and direction. In a 3D space, it would require three coordinates to pinpoint its position and orientation.
What is 3d-7d in algebra?
It is -4d.
Is position a vector or scalar?
Yes, it is a vector quantity.
How is vector quantity be described numerically?
A vector quantity is typically described numerically using both magnitude and direction. Magnitude is represented by a numerical value, while direction can be described using angles or in terms of the components along different axes (e.g., X and Y axes in a 2D space or X, Y, and Z axes in a 3D space).
How to find the area of a parallelogram with given vertices's in a 3D figure?
You need to take the magnitude of the cross-product of two position vectors. For example, if you had points A, B, C, and D, you could take the cross product of AB and BC, and then take the magnitude of the resultant vector.
Can a component of a vector be greater than the vector's magnitude?
No. If the vector is 2D then it's magnitude is (x^2+y^2)^0.5 where x and y are the components and ^0.5 means take the square root. In 3D this becomes (x^2+y^2+z^2)^0.5 etc. Thus the magnitude is always at least as big as one of the components. Here's an example of a 3D vector: (3,4,5) |(3,4,5)|=(3^2+4^2+5^2)^0.5=(9+16+25)^0.5=50^0.5=7.07... If y and z were 0: (3,0,0) |(3,0,0)|=(3^2+0^2+0^2)^0.5=(9+0+0)^0.5=9^0.5=3 ie the magnitude is the same size as x. You can also consider this geometrically. A vector is an arrow and the magnitude represents the length of the arrow. Vector addition is the 'adding' of these arrows so (3,4,5)=(3,0,0)+(0,4,0)+(0,0,5). Clearly the length of an arrow built of three smaller ones can't be less than any one of them.
What is 3d divided by d In algebra?
3 :)
When two vectors are acting at a point along different directions how do we determine magnitude and direction of the resultant?
To find the magnitude and direction of the resultant vector, you can use the parallelogram law of vector addition. Add the two vectors together to form a parallelogram, then the diagonal of the parallelogram represents the resultant vector. The magnitude can be calculated using trigonometry, and the direction can be determined using angles or components.
Dot and cross product between 3D and 4D?
here are the possible answers: A) A tridimensional vector B) A 4D vector C) A 5D vector D) An scalar number E) It is undefined
