### Find a unit vector perpendicular to a surface.

Please see the attached file for the fully formatted problems. Find a unit vector perpendicular (normal) to the surface S given by z = (x^3)(y^2) + y + 4.

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Please see the attached file for the fully formatted problems. Find a unit vector perpendicular (normal) to the surface S given by z = (x^3)(y^2) + y + 4.

Please see the attached file for the fully formatted problems. Show that, if the acceleration of an object is always perpendicular to the velocity, then the speed of the object is constant. (hint, the speed is given by ). Show that, at a local maximum or minimum is perpendicular to .

Please see the attached file for the fully formatted problems. 1. What kinds of curves are given by the following parametric representations? ? ? ? 2. Find a parametric representation of each of the following curves: ? ?

A woman exerts a horizontal force of 10 pounds on a box as she pushes it up a ramp that is 7 feet long and inclined at an angle of 30 degrees above the horizontal. Find the work done on the box.

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A constant force F= -3i + 8j +10k moves an object along a straight line from point (-6, -5, -4) to point (-3, 1, -6). Find the work done if the distance is measured in meters and the magnitude of the force is measured in Newtons.

We have three vectors: A = i + 2j ; B = 2j + k ; C = 2i + k a. Find the scalar triple product by direct multiplication. and b. The vector triple product by direct multiplication.

1) A river 35 m wide flows south at a speed if 15 m/s. What must be the velocity and heading of the boat if it is to move directly from the west bank to the east bank in 5 seconds? 2) Two tractors are hooked to a combine. the combine needs to be pulled due east at 400 N. One tractor is pulling at 190 N, 32degrees S of

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A chain is wrapped around a log and forces of 367 and 483 N are exerted at right angles to each other. What is the resultant force?

FIND THE HORIZONTAL AND VERTICLE COMPONENTS OF THE FOLLOWING FORCES:(237LBS, 48 DEGREES),(369LBS,248 DEGREES) ALSO FIND THE X AND Y COMPONENTS OF THE VECTOR (529m,342DEGREES)

A person walks 18m East and then 32m in a direction of 65 degrees N of E. What is the resultant displacement?

A force of 25 N acts perpendicular to another force of 22 N. If the forces act together on the same object, what is the resultant force?

What is the resultant force for the following forces? 250 N due north, 525 N due south and 238 N 38 degrees south of west.

Find the force on the docking cable of a boat on which the wind acts in a northerly direction with a force of 235 lbs and the tide acts in an easterly direction with a force of 323 lbs.

WHAT ARE THE X AND Y COMPONENTS OF A FORCE OF 185 N AT 132 DEGREES? WHAT ARE THE X AND Y COMPONENTS OF A VECTOR OF 432LBS, 24 DEGREES S OF E.

A block of wood weighing 35 lbs is resting on an inclined plane sloped at 36 degrees to the floor. What is the component of weight down the plane? What is the component of weight perpendicular to the plane?

A 850 LB PULL ACTS IN A DIRECTION 32 DEGREES S OF E. WHAT IS THE EASTWARD COMPONENT? WHAT IS THE SOUTHWARD COMPONENT?

I need to show that the following two terms are equivalent: l = m(r2I - rr)∙ω l = r x mv = r x m(ω x r) where r is the position vector from the origin to the particle l is the angular momentum I is the identity tensor ω is the vector angular velocity x indicates a cross product rr is a dya

Let a vector field F be given by F(x,y,z) = (x^3)i - (y^2)j + (2yz)k and a curve C be given by r(t) = 2ti + sintj - costk, 0 <= t <= (pi/2) 1. Evaluate the line integral F*dr. 2. Determine the arclength variable s from t. 3. Determine the unit tangent vector T(s). 4. Evaluate the total arclength L. 5. Write th

Let G be a graph in which every vertex has degree 2. Is G necessarily a cycle? *Please see attachment for additional information. Thanks. Use words to describe solution process. Use math symbol editor like LateX, please no stuff like <=.

For both 1 and 2, could you tell me whether or not there is a hyperplane that strictly separates the given sets A,B. If there is, find one. If there is not, prove so please. 1) A={(x,y):abs(x) + abs(y) <=1}, B={(1,1)} 2) A={(x,y):xy >= 4}, B={(x,y):x^2+y^2 <= 1} where abs = absolute value

1) Let u and v be vectors in R^n. a) Prove that llull = llvll if and only if u + v and u - v are orthogonal. b)Let (proj of u onto v) be the vector projection of u onto v. For u, v does not equal to 0, prove that (projection of u onto v - u) is orthogonal. 2) Find a basis for the space orthogonal to [1,1,0]^T in R^3.

1. Given the following 3 vectors, all of which lie in the horizontal plane, (see attachment for list of vectors), find: (a) 3A-B (b) 1) A?B 2) B?A (c) 1) A*B 2) B*A (d) (5A-6B+4C)?(B*C-A*B) *(Please see attachment for complete question and equations)

Let [a,b] be an interval in {see attachment}. Recall that the set of functions {see attachment} is a vector space over {see attachment} with addition (f+g)(x):=f(x)+g(x) and scalar multiplication a) choose [a,b]=[0,1]. Decide for each of the following subsets if it is a subspace. Justify your answer by giving a proof or a c

Which of the following are subspaces of the vector space ? Justify your answer. A vector space in R^3 such that every vector (a,b,c) has the property: a-b-c=2 A vector space in R^3 which has the form (a,b,a+b)

If U is a subspace of V then W=V-U (a vector x that belongs to W can not belong to U) W also is a subspace. (Proof or counterexample)

Let X: R^2  R^3 be the parameterized surface give by X(s,t) = (s^2 - t^2 , s + t, s^2 + 3t) A) Determine a normal vector to this surface at the point (3, 1, 1) = X(2, -1) b) Find an equation for the plane tangent to this surface at the point (3, 1, 1)

Could you please give me some sort of a sketch or drawing of what a set S (its interior and its closure) would look like when: S= {(x,y) : -1<= y < cosx, -2# < x <= 2#} Note: <= is less than or equal to < is less than # is pi (3.14....)