### Conceptual-physics-Solution manual -10th edition

We'll go 6 in the horizontal direction. And then negative 2 in the vertical. So negative 2. So vector a could look like this. Vector a looks like that. And once again, the important thing is the magnitude and the direction. The magnitude is represented by the length of this vector. And the direction is the direction that it is pointed in.

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And also just to emphasize, I could have drawn vector a like that or I could have put it over here. These are all equivalent vectors. These are all equal to vector a. All I really care about is the magnitude and the direction. So with that in mind, let's also draw vector b. Vector b in the horizontal direction goes negative 1, 2, 3, 4, and in the vertical direction goes 1, 2, 3, 4. So its tail if we start at the origin, if its tail is at the origin, its head would be at negative 4, 4.

So let me draw that just like that. So that right over here is vector b. And once again, vector b we could draw it like that or we could draw it-- let me copy and let me paste it-- so this would also be another way to draw vector b.

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Once again, what I really care about is its magnitude and its direction. All of these green vectors have the same magnitude. They all have the same length and they all have the same direction. So how does the way that I drew vector a and b gel with what its sum is? So let me draw its sum like this. Let me draw its sum in this blue color. So the sum based on this definition we just used, the vector addition would be 2, 2.

So 2, 2. So it would look something like this. So how does this make sense that the sum, that this purple vector plus this green vector is somehow going to be equal to this blue vector?

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I encourage you to pause the video and think about if that even makes sense. Well, one way to think about it is this first purple vector, it shifts us this much. It takes us from this point to that point. And so if we were to add it, let's start at this point and put the green vector's tail right there and see where it ends up putting us. So the green vector, we already have a version. So once again, we start the origin. Vector a takes us there. Now, let's start over there with the green vector and see where green vector takes us.

And this makes sense. Vector a plus vector b.

Put the tail of vector b at the head of vector a. So if you were to start at the origin, vector a takes you there then if you add on what vector b takes you, it takes you right over there. So relative to the origin, how much did you-- I guess you could say-- shift? And once again, vectors don't only apply to things like displacement.

It can apply to velocity. It can apply to actual acceleration. It can apply to a whole series of things, but when you visualize it this way, you see that it does make complete sense. This blue vector, the sum of the two, is what results where you start with vector a. At that point right over there, vector a takes you there, then you take vector b's tail, start over there and it takes you to the tip of the sum.

Now, one question you might be having is well, vector a plus vector b is this, but what is vector b plus vector a? Does this still work? Well, based on the definition we had where you add the corresponding components, you're still going to get the same sum vector. Allen, Suzy Lidstrom - arXiv. Take the Quiz and improve your overall Physics. You can see some Magnetism and Matter - Chapter Notes, Class 12, Physics sample questions with examples at the bottom of this page. Each systemic choice represents three to five physical, or chemical relations, between concepts, atoms, or molecules.

Rakshitha Rai R. Pradeep Physics - Free download as Word Doc. Where definite formulas are involved, accuracy should be given due weightage. Friends download free physics class notes from below the links. Virdi, Dr. We also have a page dedicated to physics notes for class 12 and class 12 maths where you can find easy to follow notes , assignments, worksheets and much more. Its direction is given by the screw rule or right hand rule for vector or cross product as illustrated in Fig.

Before their theory examination, 12th standard students should participate practical exam. Pradeep Objective Biology. Welcome to S. Various types of systemic multiple choice questions from the fields of general, Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. Author s : J.

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