Magnitude Definition and 1000 Threads

Homework Statement "If a vector magnitude 10 is combined with a second vector, the two vectors have a sum with a magnitude of 18 and have a difference with a magnitude of 2√10. Rounded to the nearest hundredth of a degree, what is the measure of the smallest angle between the two vectors...

Homework Statement A square loop consists of a single turn with a resistance of 4.00 Ω. The loop has an area of 600 cm^2, and has a uniform magnetic field passing through it that is directed out of the page. The loop contains a 12-volt battery, connected as shown in the figure below...

Homework Statement a uniform steel ring 60" in diameter and weighing 600 lbs is lifted by three cables each 50" long attached at points A (90*) B (90*) C (120*) with a radius of 30". compute the magnitude of tension force in each cableHomework Equations all moment equations ft=maThe Attempt at...

Homework Statement find the magnitude and angle of the moment moment=-2.8i-1.53j+2.24k force tension=2.4 kNHomework Equations rxf=rfsin(theta)The Attempt at a Solution i used the cross product to get i j and k tried sin and cos of vectors but didnt work. inverse tan of vectors won't give...

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 Two point charges, Q1 and Q2 are 6m apart. The electric field intensity a point A, midway between the two charges is 5 N/C directed toward Q2, and the potential at the same point is 45V. Find: a) the magnitude of Q1 b) the magnitude of Q2 Homework Equations...

Hi, I'm trying to get my head around how velocity vectors work in special relativity. For example, in classical mechanics, the magnitude of the velocity would be given by: v^2 = \sqrt{v_x^2 + v_y^2 + v_z^2} where v_x, v_y and v_z are the x, y and z components of the velocity...

If given only: f(5,2) = 80 fx(5,2) = 8 fy(5,2) = -6 Suppose 80 is measured in degrees Fahrenheit. Find the direction where the temperature would get cooler. I just did 8a - 6b = 0 (since using the dot product, <8,-6> * <a,b> = 0. Then I solved for a, b, and this was the vector equation. Then...

Homework Statement What is the magnitude of the collective contribution to the E field at the origin from both the + and - charges located 5 cm above the horizontal axis? Homework Equations kQ/d^2 The Attempt at a Solution Im just having a problem setting up this problem. Could...

Hello All, I am a masters student in electronics engg and reading technical electrodynamics. Please let me know why the magnitude of the electric field is zero in the z direction if we consider a wave propagating in the +ve z direction. Mathematically, it is clear; however i would like to...

Homework Statement Find the magnitude of the current in the 14V cell. Answer in units of Amperes. Homework Equations Kirchoff's junction & loop laws: I1 = I2 + I3 ƩΔV = 0 V = IR Rseries = R1 + R2 + ... 1/Rparallel = 1/R1 + 1/R2 + ... The Attempt at a Solution At...

Homework Statement A particle with charge −8 μC is located on the x-axis at the point 8 cm, and a second particle with charge −6 μC is placed on the x-axis at −6 cm. What is the magnitude of the total electrostatic force on a third particle with charge −4 μC placed on the x-axis at −2...

1. A force of 14 N exists on charge q, which is 2.1E-9 C. What is the magnitude of the electric field? [b]2. Relevant equation is E=Kq'/r^2 [b]3. I attempted using the equation above but the question doesn't include any distance. Is there another equation I should use?

Homework Statement The last question on this page(#44): http://dacc.edu/~ksturgeon/106c5webpage.pdf I haven't had any problems with any homework till now so I'm hoping for a little guidance here. I guess my main issue is I don't understand what it means by magnitude of force. Because it seems...

Homework Statement Vectors A and B have equal magnitudes of 10.0. If the sum of A and B is the vector 3.13j , determine the angle between A and B Homework Equations none The Attempt at a Solution I gave both A and B the length r=10 I don't know how to add them together if I don't...

Homework Statement in the physics laboratory experiment, a 6 kg box is pushed across a flat table by horizontal force F. if the box is moving at a constant speed of 0.35 m/s and the coefficient of kinetic friction is 0.12. what is the magnitude of F. Homework Equations F=μ*Fn where F...

Homework Statement I am given the transfer function H(s) = 10/(s(s^2 + 80s +400)) where s = jω [j is the imaginary unit i] and I am trying to get it into its magnitude and phase components. The Attempt at a Solution I rearranged it to 1/(40jω(1+ 4jω/20 + (jω/20)^2)) which is the standard...

Homework Statement A cylinder of radius R has a uniform, time varying mag. field B, (dB/dt < 0). magnitude of electric field at a point P at a distance r (<R) is: a) decreasing with r b) increrasing with r c) not varying with r d) varying as r^-2 Homework Equations The...

How do we calculate the magnitude of a system composed by some binary systems of stars?

Homework Statement What is the magnitude of the E field at the origin due to a single charge (either the + or the -) located 5 cm above the horizontal axis? Homework Equations KQ/D^2 The Attempt at a Solution in an earlier question it asked What is the direction and magnitude of...

Homework Statement Compare the magnitude of the electric field at position A with the magnitude of the electric field at position B. A) E-Field Magnitude at Point A > E-Field Magnitude at Point B B) E-Field Magnitude at Point A = E-Field Magnitude at Point B C) E-Field Magnitude at Point...

Is there such a thing as magnitude of average velocity? If so, is it one of these? Suppose I have to position vectors. \stackrel{\rightarrow}{r}= 1_x + 2.2_y and \stackrel{\rightarrow}{r}_2 = 2_x + 0_y And the distance between the vectors is Δ\stackrel{\rightarrow}{r}=...

Homework Statement Homework Equations Included in my work.The Attempt at a Solution Final Answer = 5.04E-18 I'm not sure where I went wrong.

Electric field magnitude between capacitor plates independent of distance? [SOLVED] The electric field of a point charge Q is defined as E=\frac{F}{q}=\frac{\frac{1}{4\pi \varepsilon _{0}}\frac{Qq}{r^{2}}}{q}=\frac{1}{4\pi \varepsilon _{0}}\frac{Q}{r^{2}} where q is the test charge. The...

Homework Statement Digital filter analysis - this is just one part of a multi-part question I can't move forward with. It's supposed to be an auxilliary question and isn't the "meat" of the problem. Find b, such that maximum of the magnitude of the frequency response function...

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...

Ok I am a little stuck and really need some help as I am pretty new with physics...im not sure if this question is really simple or if i need a little algebra to help find the answer. Q : 10 units, 30 degrees counterclockwise from the positive side of the x-axis :25 units, 45...

Homework Statement The potential difference between a storm cloud and the ground is 2.13 × 10 8 V. If a bolt carrying 5 C falls from a cloud to Earth, what is the magnitude of the change of potential energy of the charge? Answer in units of J Homework Equations 2.13*108 C=5...

Homework Statement Two engineering students, John with a mass of 90 kg and Mary with a mass of 45 kg, are 30 m apart. Suppose each has a 0.01% imbalance in the amount of positive and negative charge, with one student being positive and the other negative. Find the order of magnitude of the...

Homework Statement Find an expression for the ratio g(r)/g(RE) of the magnitude of the gravitational acceleration at a distance r from the centre of the Earth to that at the surface of the Earth, for r > RE, i.e. for points above the surface of the Earth. Homework Equations F(grav) = -Gm1m2 /...

Homework Statement "A force was used to push a 10 kg object through a distance of 11 metres. Its speed was initially 2 m/s, and was increased to 5.2 m/s at the end of the 11 metres. What was the magnitude of the force?" Homework Equations Ek = 1/2 mv^2 W = fd? The Attempt at a...

Homework Statement I have been asked to plot the "magnitude" of a function for V_out of a circuit. It has an imaginary component. I know I need to plot the physical, real portion. But I do not understand if this means the magnitude (modulus) of this complex function, or just the real part. The...

Homework Statement The faintest stars a naked eye can see under the ideal conditions are of m = 6 magnitude. Diameter of a maximally dilated pupil is d = 9mm. Calculate the magnitude of the faintest star a person can see if observing through binoculars (d = 5cm), a large backyard...

Homework Statement Let a, x, and y be real numbers and let E > 0. Suppose that |x-a|< E and |y-a|< E. Use the Triangle Inequality to find an estimate for the magnitude |x-y|. Homework Equations The Triangle Inequality states that |a+b| <= |a| + |b| is valid for all real numbers a and...

Hello everyone, Glad to be a new member of this superb forum :) In one of my physics classes, I have to construct an H-R Diagram. Now, this does not seems too challenging, and I'm sure it isn't. I was wondering if someone could kindly guide me in the right direction without giving me an...

A radar of 10 GHz produces an electromagnetic plane wave. Conductance is 4 S/m and dielectric constant is 81. How do you ding the magnitude and reflection coefficient? Also the percent of the incident energy that is reflected?

Homework Statement https://smart.physics.illinois.edu/images/phys101/Homework/02/vector.gif Two vectors A and B are shown in the x-y plane. Vector A has a magnitude of 5 m and makes an angle of 55° with the positive x-axis vector B has a magnitude of 2 m and makes an angle of 33° with the...

Homework Statement A room has dimensions 3.15 m (height) 3.85 (width) m 4.10 (length) m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (solved and got 6.45m) (b) Could the length of its path be less...

Homework Statement Let u = <3,-1>. Find v such that ||v||=4 and the angle between the vectors is ∏/3. Homework Equations u.v = ||u|| ||v|| cos θ The Attempt at a Solution <3,-1>.v = (√10)(4) cos ∏/3 <3,-1>.v = 2√10 v = <(2√10)/3, (2√10)/-1> Can you please confirm that I am...

Homework Statement Express your answer in part (a) in terms of magnitude and angle counterclockwise from the + x direction. Vector = -25.3i-1.2j Homework Equations arctan(ady/adx) The Attempt at a Solution Arctan(-1.2/25.3)=2.72 This is wrong... but I have no idea how to fix it.

Homework Statement Harmonic wave is described by: h(x,t)=cos(2∏(2x-t/2)). The equation is expressed as the height of the wave At time t0 a peak of the wave is at position X0. What is the magnitude of the distance to the nearest peak at this time? How much time passes before another peak is...

Homework Statement Four point charges, q, are fixed to the four corners of a square that is 13.1 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 20 nm above the center of the square...

Homework Statement Three positive particles of equal charge, +11.5 µC, are located at the corners of an equilateral triangle of side d = 13.0 cm (Fig. 16-50). Calculate the magnitude and direction of the net force on each particle. Image is here...

Homework Statement A point charge is placed at each corner of a square with side length a. The charges all have the same magnitude q. Two of the charges are positive and two are negative, as shown in the following figure. The two positive charges are on top and the two negative charges...

Homework Statement Find the magnitude of the vector product w ⃗x u, where w=<1,0,1> and u=<1,1,0>. Homework Equations ||w x u|| = ||w|| ||u|| sin θ cos θ = \frac{w.u}{||w|| ||u||} The Attempt at a Solution w ⃗x u ⃗= -i ̂+j ̂+k ̂ ‖||w ⃗x u|| ⃗ ‖= √3 but...

Is there a "magnitude of momentum" quantum operator? Homework Statement Is the ground state of the infinite square well an eigenfunction of momentum? If so, what is its momentum? If not, why not? What can you say about the magnitude of the momentum? Homework Equations Ground state...

Homework Statement What is the magnitude of the sum of the following vectors? A= i +5j -k B= 4i-j-5k C= -i+j Homework Equations The Attempt at a Solution What I did was I added i+4i-i to get 5i, I also added 5k+j-5 to get 5j, likewise for k to get -6k and did the...

Homework Statement The components of vectors and are given as follows: Ax = +5.7 Bx = -9.8 Ay = -3.6 By = -6.5 The magnitude of the vector difference ,B-A is closest to: Homework Equations A=square root (ax)^2+ay^2 B= square root (bx)^2 + by^2 The Attempt at a Solution...

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 Four objects, each with a positive charge of 1.0 3 1025 C, are placed at the corners of a 45° rhombus with sides of length 1.0 m, as in Figure 13. Calculate the magnitude of the net force on each charge. Homework Equations F = Kq1q2/r^2 The Attempt at a Solution