Magnitude and direction Definition and 198 Threads

Homework Statement A canoe has a velocity of 0.35 m/s southwest relative to the earth. The canoe is on a river that is flowing 0.65 m/s east relative to the earth. Find the velocity (magnitude and direction) of the canoe relative to the river. The Attempt at a Solution 0.930985 is the...

Homework Statement Revered Members, Please go through my attachment. I have been asked to find the magnitude and direction of current through the 10 ohm resistor. The answer that is given in the book is 1/23 Ampere from A to B. But i solved as given in the attachment but i got the answer...

Homework Statement There is a 180 pound basketball player. The coefficient of friction between his right foot and the floor is 0.7. There is no acceleration or sliding in the problem. Determine the magnitude and direction of the force that his right foot is exerting on the floor...

Homework Statement Four charges, q1 = +195 µC, q2 = +60 µC, q3 = −145 µC, and q4 = +21 µC, are fixed at the corners of a 4 m by 5 m rectangle, as illustrated in the figure below. What are the magnitude and the direction of the net force acting on q1? (Assume the x-axis extends from q1 to...

Homework Statement A conducting bar of length l is placed on a frictionless plane tilted at an angle θ from the horizontal.A uniform magnetic field is applied to the vertical direction.To prevent the bar from sliding down, a voltage source is connected to the ends of the bar with current...

Homework Statement http://imgur.com/fvNbE Part a needs to have up to 2 significant figures. For part b. you need to find theta or the degrees counter clockwise from +x direction.Homework Equations Coulombs Law: F = 9(10^9) |q1q2|/r^2 r = distance in meters of two chargesThe Attempt at a...

a soccer ball is kicked with an initial speed of 10.2 m/s in a direction 25 degrees above the horizontal. Find the magnitude and direction of its velocity 0.250 seconds and 0.500 seconds after being kicked. Is the ball at its gratest height before or after 0.500 seconds?

Homework Statement An electric dipole is defined as two point charges separated by distance L. Consider point P with coordinates (x,0). A dipole along the x-axis is separated by distance a from the origin. q- is closer to point P Find: 1) Electrostatic potential due to dipole at point P 2)...

Homework Statement A very thin disk of non-conducting material initially holds a charge QO = +5 μC that decreases with time t as Q(t) = QO e-t/τ where τ = 10 seconds. If the disk has a radius of 0.10 m, what is the magnitude and direction of the magnetic field at the circumference of...

Homework Statement A uniform magnetic field B is confined to a cylindrical volume of radius 0.080m. B is directed into the plane of the paper and is increasing at a constant rate of (delta)B/(delta)t=0.300 T/s. Calculate the magnitude and direction of the current induced in a circular wire...

Homework Statement http://desmond.imageshack.us/Himg37/scaled.php?server=37&filename=physicsh.jpg&res=medium Homework Equations B = \frac{μI}{2πr} The Attempt at a Solution B = \frac{μ(12)}{2π(0.4m)} - \frac{μ(12)}{2π(0.1)} B = -1.8 x 10-5I'm not sure if I am doing this correctly, am I...

Homework Statement Diagram shows the separations of a proton, electron, and α particle (charge +2e). What is the force (magnitude and direction) on the proton? Homework Equations Addition of vectors, Coulomb's law The Attempt at a Solution I keep getting 82 degrees but the answer...

Homework Statement 3 identical charges of 2.0 uC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin...

Homework Statement Determine the magnitude and direction θ of F1 so that the resultant force is directed vertically upward and has a magnitude of 800N. Homework Equations F1=FR-F2-F3 The Attempt at a Solution I have attached the question with diagram and my attempt at solving the...

Homework Statement In the inertial system S, an event is observed to take place at point A on the x-axis and 10^-6 seconds later another event takes place at point B , 900 m further down. Find the magnitude and direction of velocity of S' with respect to S in which these two events appear...

Homework Statement Three point charges lie along a straight line as shown in the figure below, where q1 = 6.60 µC, q2 = 1.41 µC, and q3 = -1.9 µC. The separation distances are d1 = 3.00 cm and d2 = 2.00 cm. Calculate the magnitude and direction of the net electric force on each of the...

Homework Statement To move the oil drum, the resultant of the three forces shown must have a magnitude of 500 N. Determine the magnitude and direction of the smallest force F that would cause the drum to move. here is the figure: http://screensnapr.com/e/yliMVN.png Homework...

Homework Statement A 200N block is on a 35 degree incline with a frictionless, massless pulley and a weight on the other side, Fw= 220. The system is in equilibrium. What are the magnitude and direction of the frictional force on the 200N block? Homework Equations and The Attempt at...

Homework Statement The resultant vector of the four displacement vector A B C D is 1000m, with direction 60° N of W. The three vectors A B C are: A=200m,S B=300m,45° S of W C=400m,30° E of N a.) Find the magnitude of the fourth vector b.) find the direction of the fourth vector Homework...

[PLAIN]http://www.tumblr.com/photo/1280/12942474909/1/tumblr_lutva4tbpB1qml28n

Homework Statement Below is a snapshot of the question I can't seem to solve. I can't seem to find in my textbook how to work out this problem...:( Any pointers? Thanks! Homework Equations The Attempt at a Solution

Homework Statement Given the initial (u) and final (v) velocities below, find the magnitude and direction of the changes in velocity: Homework Equations (a) through (f) - I only have trouble with (e) and (f) (e): u = 10ms east, v = 15ms N40°W (f): u = 250ms N20°W, v = 200ms south...

Homework Statement There is a non-conducting charged rod with length L=.0815(m) and linear charge density λ=-5.9x10-14(C/m). The rod is placed parallel to and on the x-axis, and at a distance a=.12(m) from the right-most end of the rod is point P. Calculate the magnitude and direction of E...

Homework Statement 1. Homework Statement A 373-kg boat is sailing 13.0 ° north of east at a speed of 2.00 m/s. 32.0 s later, it is sailing 33.0 ° north of east at a speed of 3.90 m/s. During this time, three forces act on the boat: a 33.1-N force directed 13.0 ° north of east (due to an...

Homework Statement Orv walks 312 m due east. He then continues walking along a straight line, but in a different direction, and stops 220 m northeast of his starting point. How far did he walk during the second portion of the trip and in what direction? What is the magnitude? What is the...

Homework Statement Suppose vector C = vector A + vector B where vector A has components vector A x = 4, vector A y = 2 and vector B has components vector B x = -3, vector B y = -5. (a) What are the x- and y- components of vector C ? I've solved this to figure out that x = 1 and y = -3 for C...

Homework Statement A basketball player runs down the court, following the path indicated by the vectors A,B, and C in the figure. The magnitudes of these three vectors are 10, 20 and 7 m . Assume the positive x-axis is directed to the right. There is a 45degree angle outside of where A...

1. Vectors A and B both have a magnitude of 3.0 meters. Find the magnitude and direction of: a) A+B b) B-A c) A-2B 2. additional info... the problem comes with a picture of a the vectors. It shows the x and y axis. Vector B is going directly along the positive y axis. vector A is...

Homework Statement Three charges are arranged as shown in the picture I attached. Find the magnitude and direction of the electrostatic force on the charge at the origin.Homework Equations I know that Coulomb's Law must be applied.The Attempt at a Solution I've drawn a force diagram with FCB...

Homework Statement Three point charges are arranged as shown in the figure below. (Take q1 = 5.70 nC, q2 = 4.60 nC, and q3 = -2.79 nC.) (a) Find the magnitude of the electric force on the particle at the origin. (b) Find the direction of the electric force on the particle at the...

Homework Statement In wandering, a grizzly bear makes a displacement of 1563m due west, followed by a displacement of 3348m in a direction 32 degrees NW. What are the (a) the magnitude and (b) the direction of the displacement needed for the bear to return to its starting point? Specify the...

vector A has a magnitude of 81 units and points due west, while vector B has the same magnitude and points due south. Find the magnitude and direction of (a) A + B and (b) A - B . Specify the directions relative to due west. (a) Magnitude and direction of A + B = and o (b) Magnitude and...

Homework Statement A proton, with mass 1.67*10^-27 kg and charge +1.6*10^-19C, is sent with velocity 5.0*10^4 m/s in the x-direction into a region where there is uniform electric field of magnitude 390 V/m in the y direction. What is the magnitude and direction of the uniform magnetic field in...

Homework Statement a square of sides 10cm has four charges at each corner starting clockwise from top right they are 5,10,6 and 3nC. Determine the resultant electric field including magnitude and direction at the centre of the square. Owww and the medium is air. Finally what is the force on...

Homework Statement Find the magnitude and direction of 4 concurrent coplanar forces: 10N 32 degrees east of north 35N 50 degrees east of north 25N 72 degrees east of north 85N 40 degrees east of south Any help would be greatly appreciated.

Homework Statement Find the magnitude and direction of 3 coplanar forces of: 40N 45 degrees east of south 10N west 70N 35 degrees east of north This is all new to me so anyone that can show me and hopefully explain how I can get the answer would be great.

Homework Statement Given the following force vectors: A is 27 lb at an angle of 28° clockwise from the +x-axis, and B is 44 lb at an angle of 52° clockwise from the +y-axis. (a) Using the method of components find the magnitude and angle of the vector C such that 2A + C − B results in a vector...

Homework Statement Three charges are arranged as shown in the diagram below. Their magnitudes are: q1 = +2.5 x 10^-17 C q2 = +3.0 x 10^-17 C q3 = +3.5 x 10^-17 C (its a right angle triangle, with 50 cm as the hypotenuse, 40 cm as the horizontal, and 30 cm as the vertical) Figure image...

Homework Statement Consider the three displacement vectors A = ( -2i + 3j ) m, B = ( 2i + 7j ) m, and C = ( -7i + 5j ) m. Use the component method to determine the following. (a) The magnitude and direction of D = A + B + C |D| = ___ m θ = ___° (from the +x axis) (b) The magnitude and...

What are the magnitude and direction of the electric field strength at point Z in the following: Point X, q1 = -2.0 x 10^-5 and it is 60 cm to the left of point Y, q2 = 8.0 x 10^-6, which is 30 cm to the left of Z. Essentially, this is what it looks like: X-------Y--Z

Homework Statement A three-tiered birthday cake rests on a table. From bottom to top, the cake tiers weigh 16 N, 9 N, and 5 N, respectively. What is the magnitude and direction of the normal force ating on the second-tier? Homework Equations FN=FWcos(theta) The Attempt at a Solution...

Homework Statement Question: "A block of 2kg mass is hanging from a spring with stiffness K=70N/m. The spring has an unstretched length of 30cm. The mass oscillates vertically under the influence of the spring and gravity. Calculate the magnitude and direction of the mass's acceleration when...

Homework Statement A 0.45 T magentic field points due east. Find the magnitude and direction of the force on a +1.0uC charge moving southward at 3.5 m/s? Homework Equations F= qvB Right hand rule The Attempt at a Solution Using right hand rule, direction of the force is up...

I missed a week of school due to sickness and today was my first day back. While I was gone, the topic my class learned is called "vectors". My teacher gave me an assignment with 25 problems about it that I'm supposed to finish by tomorrow plus I'll be having a test on it in two days but...

Homework Statement A grasshopper makes four jumps. The displacement vectors are (1) 24.0 cm, due west; (2) 23.0 cm, 31.0 degrees south of west; (3) 23.0 cm, 33.0 degrees south of east; and (4) 34.0 cm, 46.0 degrees north of east. Find (a) the magnitude and (b) direction of the resultant...

Homework Statement Problem 3 Homework Equations The Attempt at a Solution 1) Find I and voltage across resistor 5 V=IR 12.6 = I * 5.08 I=2.48 .08*2.48= .1984 12.6-.1984= 12.4 V across battery. So would I and V across the resistor be I=2.48 and V=12.4? 2) Find current I (Forgot to mark...

Homework Statement The position r as a function of time of a 15.0 kg mass, moving in the x-y plane, is given by r(t) = (6.00t^3 x + 1.20t^4 y) meters where x and y are unit vectors. At t = 5.00 s, find the magnitude and direction of the net force vector which is causing this acceleration...

Homework Statement Three metal balls with unequal radii R1 < R2 < R3 are placed at the vertices of an equilateral triangle, whose sides have length a. The balls are connected by thin metal wires. A positively charged rod is brought into contact with one of the balls and transfers an amount of...

Homework Statement Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 0.40 µC charge. (A = 0.20 µC, B = 6.60 µC, and C = -3.80 µC.). Diagram below... Homework Equations F=...

Homework Statement What is the direction of the force \vec{F} on the -10 nC charge in the figure? Give your answer as an angle measured cw from the +x-axis. Problem 26.39 in Physics for Scientists and Engineers Second Edition by Knight Magnitude of the force is 4.3E-3 N Homework Equations As...