Magnitude and direction Definition and 202 Threads

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...

Hi everyone. I am new here so i don't know how this place works. I got a problem:: A horizontal bend in a pipeline conveys water at a discharge at 1000l/s gradually reduces from 600mm to 300mm and deflects the flow through an angle of 60 degrees. At the larger end the pressure is...

Hello, I'm new in this forum. I hope you can help me in my homework. thank you Homework Statement The given is write in my attachment picture. Homework Equations Find the magnitude and direction of the electrostatic at q4 If they are given equal mass of 1 kg, find the...

Homework Statement Two charges q1 = 5μC and q2 = 10μC are located at x = 0 cm and 10 cm respectively. What would the magnitude and direction of the force on a 2μC charge located at x = 5 cm be due to charges q1 and q2. Homework Equations The Attempt at a Solution i don't know how...

Homework Statement Problem 27.7 A stiff wire 52.0 cm long is bent at a right angle in the middle. One section lies along the z axis and the other is along the line y=2x in the plane. A current of 20.5 A flows in the wire-down the z axis and out the line in the xy plane. The wire passes...

Homework Statement Four charges are located at the corners of a square as shown below. Calculate the magnitude and direction of the net force on charge -3Q and charge 4Q. (sorry don't have picture, but it is of a square with corners -Q, 2Q, -3Q, and 4Q clockwise). Homework...

Hey, I have the following question. How do I work this out: There is an object 9N<-----------[OBJECT]--->3N--->4N...[The ---> represent the direction in which the object is being pulled, and the 3N and 4N pull into the same direction. Now its asking me: 1. Calculate the magnitude and direction...

Homework Statement I am confused about two parts of the question. 1 How are they getting the calculation of dB/dt=0.06 and how do they know the direction of the field is perpendicular to r and couterclockwise? A magnetic field directed into the page changes with time according to...

Homework Statement I have x, y, theta, omega and alpha at any given t so that's not a problem if they're needed. I need magnitude and direction for the forces in the diagram to show them in my model. Homework Equations Transverse component: mr\dot{\omega} = mr\ddot{\theta} Radial...

Homework Statement An electron experiences the greatest force as it travels 2.9 x 10^6 ms in a magnetic field when it is moving northward. The force is upward and of magnitude 7.2 x 10^-13 N. What are the magnitude and direction of the magnetic field? Homework Equations The Attempt...

Homework Statement Find the magnitude of the resultant force and the angle it makes with the positive x-axis draw one vector from origin (0,0) in quadrant one that is 45 degrees (this is 20 lbs) draw another vector from the origin (0,0) in quadrant four that is 30 degrees (this is 16...

Homework Statement A conducting rod whose length is 25 cm is placed on a U-shaped metal wire that has a resistance of 8 ohm. The wire and rod are placed in the plane of the paper. A constant magnetic field of strength 0.40 T is applied out of the paper. An applied force moves the rod to the...

Another Magnitude and Direction of resultant force ? I'm having issues on the second question. I feel that I'm missing some information. Since the lines are perpendicular do I consider one force (10N) at 90 degrees North? And if this is the case then is the other force (15N) at __ degrees...

A soccer ball is kicked with an initial speed of 5.9 m/s in a direction 24.0° above the horizontal. Find the magnitude and direction of its velocity at the following times. (Take the +x axis to be parallel to the ground, in the direction that the ball is kicked.) (a) 0.250 s after being...

Homework Statement The force vector FA has a magnitude of 90.0 Newtons and points due east. The force vector FB has a magnitude of 135 Newtons and points 75° north of east. Use the graphical method and find the magnitude and direction of (a) FA - FB (give the direction with respect to...

Homework Statement A car travels 20 km due north and then 35 km in a direction 60 degree west of north. Find the magnitude and direction of the car's resultant displacement. Homework Equations R = sqrt(A^2 + B^2) Ax = cosA, Ay = sinA tan = y/x The Attempt at a Solution This...

Homework Statement 1. Homework Statement The velocity of the Moon relative to the center of the Earth can be approximated by varrowbold(t) = v [−sin (ωt) xhatbold + cos (ωt) yhatbold], where v = 945 m/s and ω = 2.46 multiplied by 10−6 radians/s. (The time required for the Moon to complete...

Homework Statement A small object of mass 3.80 g and charge -18uC (-18 x 10^-6 or microcoulombs) "floats" in a uniform electric field. What is the magnitude and direction of the electric field? Homework Equations F = ma F = Eq The Attempt at a Solution I already have the magnitude...

Homework Statement Use the cosine and sine rules to determine the magnitude and direction of the resultant of a force of 11 kN acting at an angle of 50 degrees to the horizontal and a force of 8 kN acting at an angle of -30 degrees to the horizontal. Homework Equations Law of Sines...

Hello again :). here is a very interesting exercise, I attached a picture of the exercise, its a Circle with Forces. Homework Statement Compute the Magnitude and Direction of the Resultant Couple acting on the body Shown: Homework Equations M=F x D The Attempt at a SolutionCan you provide...

Here is the tasks. We have e balloon flying from point A to point B. We have x-axis and y-axis. x=2t and y=x(power 2) / 30. t=2 seconds. I have to calculate the distance between A and B after 2 seconds. I have to calculate the magnitude and direction of velocity and acceleration. Can you...

Homework Statement 2. You are given three vectors: A = (6.0i— 8.0j) units B = (-8.0i + 3.0j) units and C = (26.0i + 19.0j) units. a) Find the magnitude and direction of each vector. b) Find the resultant of A + B, A - B and A + B - C. c) It is know that aA + bB + C = 0. Find...

Homework Statement A baseball player hits a baseball (m = 0.145 kg) as shown in the figure below. The ball is initially traveling horizontally with speed of 35 m/s. The batter hits a fly ball as shown, with a speed vf = 51 m/s. What is the magnitude and direction of the impulse imparted on the...

Homework Statement A current path shaped as shown in the figure(I included the picture at the end of post) produces a magnetic field at P, the center of the arc. If the arc subtends an angle of θ = 60.0° and the radius of the arc is 0.400 m, what are the magnitude and direction of the field...

Use the cosine and sine rules to determine the magnitude and direction of the resultant of a force of 11 kN acting at an angle of 50 degrees to the horizontal and a force of 6 kN acting at an angle of -30 degrees to the horizontal. helppp please

A long straight horizontal wire carries a current of 70 amperes towards the east. The wire is placed in a uniform magnetic field of intensity 0.15 T towards the north. Find the magnitude and direction of the resulting force on a 25m length of this wire F=ILB sin \theta F =...

Homework Statement Determine the magnitude and direction of the displacement if a man walks 32.5 km 45° north of east, and then walks due east 17.0 km.

Homework Statement A 1kg object is moving in the x direction at 15.6 m/s. Just 3.4s later, it is moving at 32.4 m/s at 29.1 degrees to the x axis. What are the magnitude and direction of the force applied during this time? Homework Equations The Attempt at a Solution I really...

Homework Statement An observer in frame S standing at the origin observes two flashes of colored light separated spatially by Δx = 2400 m. A blue flash occurs first, followed by a red flash 5 μs later. An observer in S' moving along the x-axis at speed v relative to S also observes the...

Homework Statement Vector has a magnitude of 5.4 m and is directed east. Vector has a magnitude of 3.5 m and is directed 36° west of north. What are (a) the magnitude and (b) the direction (from east) of a + b? What are (c) the magnitude and (d) the direction (from east) of b - a ? Round...

Homework Statement You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -50.0 units The two possibilities for its x component are +68.74 and -68.74 Assuming the x component is known to be positive, specify the vector which, if you add it to the...

Homework Statement At the entrance of Ambrose Channel at New York harbor, the tidal current at one time of the day has a velocity of 4.2 km/h in a direction 20 degrees south of east. Consider a ship in this current; suppose that the ship has a speed of 16 km/h relative to the water. If the...

Homework Statement The quantity called the electric field is a vector. The electric field inside a scientific instrument is = (215 - 380 ) V/m, where V/m stands for volts per meter. What are the magnitude and direction of the electric field? _____ v/m ______ degree (smallest positive...

Homework Statement Three charged particles are placed at the corners of an equilateral triangle of side 1.20 m. http://i565.photobucket.com/albums/ss99/dmullin4/HomeworkCH21P13.jpg The charges are +7.0 microcoulombs, -8.0 microcoulombs, and -6.0 microcoulombs. Calculate the magnitude and...

Homework Statement The electric potential V in the space between two flat parallel plates 1 and 2 is given (in volts) by V = 1920x^2, where x (in meters) is the perpendicular distance from plate 1. What is the magnitude and direction of the electric field at x = 2.5 cm? (Take the direction...

Homework Statement Two point charges are placed on the y-axis. One is +3.0 C and located at position (0, 2 m), the other is -2.0 C and located at the origin. Use the diagram to find the magnitude and direction of the electric field and the force on a +1.0 x 10-9 C test charge placed in the...

Homework Statement A model rocket has been fired with V0=50m/s at 35 degrees above horizontal. Find magnitude and direction at t=4s. Homework Equations V = V0+at, displacement = v0t + .5at2 The Attempt at a Solution I have successfully found the magnitude by setting Vx= 50*cos35...

[b]1. The pilot of a small plane finds that the airport where he intended to land is fogged in. He flies 45 miles west to another airport to find that conditions there are too icy for him to land. He flies 20 miles at 15° east of south and is finally able to land at the third airport. (a)...

Homework Statement Three forces are applied to an object. Force F1 has a magnitude of 23.0 Newtons (23.0 N) and is directed 30.0° to the left of the +y axis. Force F2 has a magnitude of 14.0 N and points along the +x axis. What must be the magnitude and direction (specified by the angle θ in...

Homework Statement A sailor in a small sailboat encounters shifting winds. She sails 2.00 km east, then 3.50 km southwest, and then an additional distance in an unknown direction. Her final position is 5.80 km directly east of the starting point. Find the magnitude and direction of the third...

Homework Statement Two vehicles approach a right angle intersection and then collide. After the collision, they become entangled. If their mass ratios were 1:4 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the final velocity of the wreck...

Homework Statement In Figure 21.12, two point charges q1=3uC and q2=-3uC interact with a third point charge Q=7uC. Find the magnitude and direction of the total (net) force on Q. Homework Equations Edipole= kqs/r^3 The Attempt at a Solution I solved for the electric field with the...

Homework Statement Two long straight wires each carry 3.4 A of current and are crossed, as shown in the figure. If Dh=12.0cm and Dv=6.0cm, what is the magnitude and direction of the magnetic field at A? Figure: http://i41.tinypic.com/4louv6.jpg"Homework Equations B=(Mu)(I)/(2pie)(r)The Attempt...

Homework Statement A baseball is thrown. The ball leaves your hand with a velocity of 15 m/s at 60 degrees above the horizontal. acceleration due to gravity is 9.8 m/s^2. Determine the velocity (magnitude and direction) of ball at the maximum height. Homework Equations im not sure, but...

Homework Statement What are the magnitude and direction of the electric field at a point midway between a -9.0 µC and a +6.0 µC charge 3.0 cm apart? Assume no other charges are nearby. Homework Equations Fe= {K(q1)(q2)}/d^2 k = (8.99 x 10^9) The Attempt at a Solution First I...

Homework Statement Two Q = +5.86 mC charges are placed at opposite corners of a square d = 0.9 m on each side, and -Q = -5.86 mC charges are placed at the remaining corners. Determine the magnitude and direction of the force on each charge. Homework Equations Coulomb's Law The...

Homework Statement A stiff wire 50 cm (0.5 m) long is bent at a right angle in the middle. One section loes along the z axis and the other is along the line y=2x in the xy plane. A current of 20A flows in the wire -down the z-axis and out the line in the xy plane. The wire passes through a...

Homework Statement Ok here it goes... A stream of electrons, each with speed u = 5.9 x 10^6 m s^-1 and traveling along the x-axis in the positive x-direction enters a region pervaded by a uniform magnitic field B. The electrons the describe a circle with raidus R in the horizontal xy-plane...

Homework Statement Find the magnitude and direction of the equilibrant of each of the following foces: a) forces of 32N and 48N acting at an angle of 90 degress to each other b) forces of 16N and 10N acting at an angle of 19 degrees to each other Homework Equations Sine Law, Cosine law, Soh...

Homework Statement A projectile is fired at a speed of 45 m/s at an angle of 40 degrees above horizontal. Determine the magnitude and direction of its velocity 4 seconds later. Homework Equations ax=0 ay=-g The Attempt at a Solution