Problem 1QC: Sketch two nonzero vectors u and v with = 0. Sketch two nonzero vector u and v with = . Problem 2QC: Use Theorem 13.1 to computr the dot products i j, i k, and j k for the unit coordinate vector.... Problem 3QC: Let u = 4i 3j. By inspection (not calculations), find the orthogonal projection of u onto i and... Problem 1E: Express the dot product of u and v in terms of their magnitudes and the angle between them. Problem 2E: Express the dot product of u and v in terms of the components of the vectors. Problem 3E: Compute 2, 3, 6 1, 8, 3. Problem 4E Problem 5E Problem 6E: Find the angle between u and v if scalvu = 2 and |u| = 4. Assume 0 . Problem 7E: Find projvu if scalvu 2 and v 2,1,2. Problem 8E: Use a dot product to determine whether the vectors u = 1,2,3 and v = 4,1,2 are orthogonal. Problem 9E Problem 10E Problem 11E: Suppose v is a nonzero position vector in the xy-plane. How many position vectors with length 2 in... Problem 12E: Suppose v is a nonzero position vector in xyz-space. How many position vectors with length 2 in... Problem 13E Problem 14E Problem 15E Problem 16E Problem 17E Problem 18E Problem 19E Problem 20E Problem 21E Problem 22E Problem 23E Problem 24E Problem 25E Problem 26E Problem 27E Problem 28E Problem 29E: Angles of a triangle For the given points P, Q, and R, find the approximate measurements of the... Problem 30E: Angles of a triangle For the given points P, Q, and R, find the approximate measurements of the... Problem 31E: Sketching orthogonal projections Find projvu and scalvu by inspection without using formulas. 25. Problem 32E: Sketching orthogonal projections Find projvu and scalvu by inspection without using formulas. 26. Problem 33E: Sketching orthogonal projections Find projvu and scalvu by inspection without using formulas. 27. Problem 34E: Sketching orthogonal projections Find projvu and scalvu by inspection without using formulas. 28. Problem 35E: Calculating orthogonal projections For the given vectors u and v, calculate projvu and scalvu. 29. u... Problem 36E: Calculating orthogonal projections For the given vectors u and v, calculate projvu and scalvu. 30. u... Problem 37E: Calculating orthogonal projections For the given vectors u and v, calculate projvu and scalvu. 33. u... Problem 38E: Calculating orthogonal projections For the given vectors u and v, calculate projvu and scalvu. 34. u... Problem 39E Problem 40E: Calculating orthogonal projections For the given vectors u and v, calculate projvu and scalvu. 36. u... Problem 41E Problem 42E: Computing work Calculate the work done in the following situations. 38. A stroller is pushed 20 m... Problem 43E Problem 44E: Computing work Calculate the work done in the following situations. 40. A constant force F = 4, 3, 2... Problem 45E: Computing work Calculate the work done in the following situations. 41. A constant force F = 40, 30... Problem 46E Problem 47E: Parallel and normal forces Find the components of the vertical force F = 0, 10 in the directions... Problem 48E: Parallel and normal forces Find the components of the vertical force F = 0, 10 in the directions... Problem 49E Problem 50E: Forces on an inclined plane An object on an inclined plane does not slide, provided the component of... Problem 51E Problem 52E: For what value of a is the vector v = 4,3,7 orthogonal to w = a,8,3? Problem 53E: For what value of c is the vector v = 2,5,c orthogonal to w = 3,2,9 ? Problem 54E: Orthogonal vectors Let a and b be real numbers. 52. Find two vectors that are orthogonal to 0, 1, 1... Problem 55E: Orthogonal vectors Let a and b be real numbers. 49. Find all vectors 1, a, b orthogonal to 4, 8, 2. Problem 56E Problem 57E Problem 58E: Vectors with equal projections Given a fixed vector v, there is an infinite set of vectors u with... Problem 59E: Vectors with equal projections Given a fixed vector v, there is an infinite set of vectors u with... Problem 60E: Vectors with equal projections Given a fixed vector v, there is an infinite set of vectors u with... Problem 61E: Vectors with equal projections Given a fixed vector v, there is an infinite set of vectors u with... Problem 62E: Decomposing vectors For the following vectors u and v, express u as the sum u = p + n, where p is... Problem 63E: Decomposing vectors For the following vectors u and v, express u as the sum u = p + n, where p is... Problem 64E: Decomposing vectors For the following vectors u and v, express u as the sum u = p + n, where p is... Problem 65E: Decomposing vectors For the following vectors u and v, express u as the sum u = p + n, where p is... Problem 66E: An alternative line definition Given a fixed point P0 (x0, y0) and a nonzero vector n = a,b the set... Problem 67E: An alternative line definition Given a fixed point P0 (x0, y0) and a nonzero vector n = a,b the set... Problem 68E Problem 69E: An alternative line definition Given a fixed point P0(x0, y0) and a nonzero vector n = a,b the set... Problem 70E: Orthogonal unit vectors in 3 Consider the vectors I=1/2,1/2and J=1/2,1/2. 66. Show that I and J are... Problem 71E: Orthogonal unit vectors in 3 Consider the vectors I=1/2,1/2and J=1/2,1/2. 67. Express I and J in... Problem 72E: Orthogonal unit vectors in 3 Consider the vectors I=1/2,1/2and J=1/2,1/2. 68. Write the vector 2, 6... Problem 73E: Orthogonal unit vectors in 3 Consider the vectors I=1/2,1/2,1/2, J=1/2,1/2,0, and K=1/2,1/2,1/2. a.... Problem 74E: Flow through a circle Suppose water flows in a thin sheet over the xy-plane with a uniform velocity... Problem 75E: Heat flux Let D be a solid heat-conducting cube formed by the planes x = 0, x = 1, y = 0, y = 1, z =... Problem 76E: Hexagonal circle packing The German mathematician Gauss proved that the densest way to pack circles... Problem 77E: Hexagonal sphere packing Imagine three unit spheres (radius equal to 1) with centers at O(0, 0, 0),... Problem 78E: Properties of dot products Let u = u1, u2, u3, v = v1, v2, v3, and w = w1, w2, w3. Prove the... Problem 79E Problem 80E Problem 81E Problem 82E: Properties of dot products Let u = u1, u2, u3, v = v1, v2, v3, and w = w1, w2, w3. Prove the... Problem 83E: Direction angles and cosines Let v = a, b, c and let , , and be the angles between v and the... Problem 84E Problem 85E Problem 86E: CauchySchwarz Inequality The definition u v = |u| |v| cos implies that |u v| | u| |v| (because |... Problem 87E: CauchySchwarz Inequality The definition u v = |u| |v| cos implies that |u v| | u| |v| (because |... Problem 88E: CauchySchwarz Inequality The definition u v = |u| |v| cos implies that |u v| | u| |v| (because |... Problem 89E: Diagonals of a parallelogram Consider the parallelogram with adjacent sides u and v. a. Show that... format_list_bulleted