Straight line Definition and 241 Threads

Homework Statement Calculate mutual-inductance between straight line cable and square shape frame, as shown on picture. Homework Equations I am not sure which equation will be used here because as far as my knowledge goes , mutual inductance should be concerned with turns in...

How do you construct the arc of the circle as a straight line by geometry not by an equation? Thank you

I'm working on an assignment that is due in roughly two weeks and I'm stuck on a problem. I have what I believe may be a solution but am unsure whether or not it is 'complete'. Here is the problem: "Let C be a circle or a straight line. Show that the same is true of the locus of points...

Homework Statement A particle starts from rest and accelerates as shown in the attached figure. Determine (a) the article's speed at t=10s and t=20s. (b) The distance traveled in the first 20s. Homework Equations a=dv/dt The Attempt at a Solution (a) t=10s, speed = 20m/s t=20s...

Homework Statement A particle which moves with a constant acceleration in a straight line passes through the point O, A and B in that order. If the distances OA and AB are 17 m and 35 m respectively and the particle takes the same amount of time , 3 seconds to travel each distance then...

Hi all, Sorry if I have posted in the wrong place. I am not to familiar with the forum titles and new setting. I have an argument and this is not homework. Suppose two particles P and Q of masses 2m and m respectivily are attached to the ends of a light inextensible string which passes...

Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h –1 in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite...

1. 1. A point moving along the x-direction starts from rest at x=0 and comes to rest at x=1 after 1 second. Its acceleration at any point is denoted by β. Which of the following is not correct ? a. β must change sign during the motion. b. |β|≥4 units at some or all points during the motion c...

Homework Statement A 0.525kg ball starts from rest and rolls down a hill with uniform acceleration, traveling 200m during the second 10.0 s of its motion.Homework Equations xf= xi + vi +1/2a(t)^2 x= vi + atThe Attempt at a Solution a= 4 m/s^2 x=50 mits wrong

Homework Statement Show all the steps required to modify the equation so that the plot yields a straight line. N/N0=e\ -ux This equation demonstrates the fraction radiation absorbed by a material, where "N0" is the number of incident photons from the radioactive source without any absorbed...

Homework Statement A helicopter carrying Dr. Evil takes off with a constant upward acceleration of 5.0m/s^2. Secret agent Austin Powers jumps on just as the helicopter lifts off the ground. After the two men struggle for 10.0s , Powers shuts off the engine and steps out of the helicopter...

Homework Statement A certain volcano on Earth can eject rocks vertically to a maximum height . Part A: How high (in terms of H ) would these rocks go if a volcano on Mars ejected them with the same initial velocity? The acceleration due to gravity on Mars is 3.71 m/s^2 , and you can...

I have an ellipsoid representing the Earth (WGS84) and the current location of a spacecraft (somewhere above the surface). I am trying to find a method that allows me to calculate the straight line distance from the point to the surface of the ellipsoid. Any help would be appreciated...

1. A car is sitting at a stop light and then accelerates from rest when the light turns green.The acceleration of the car is a combination of forward acceleration but also slowing down due to drag forces.The final total accelaration of the car has the form a(t)=b/(t+T)^3 with constants b=2000 m...

Homework Statement A ball is thrown upward from a building 30 meters tall and misses the edge on its way down, hitting the ground 6 seconds after it was thrown. A) With what speed was it thrown? B) What is its highest height?Homework Equations Vf = Vi + at x = 1/2(Vi + Vf) x = Vi t + 1/2(at^2)...

a car travels in a straight line... Homework Statement A car travels in a straight line for 4.8 h at a constant speed of 89 km/h. What is its acceleration? Answer in units of m/s2 Homework Equations here is what I'm confused about: I only have time and speed, how exactly could i...

Homework Statement Find the electric field a distance z above one end of a straight line segment of length L, which carries a uniform line charge λ. Check that your formula is consistent with what you would expect for the case z>>L Homework Equations KQ/r2 The Attempt at a Solution I...

1. Hello, I'm reading through Munkres and I was doing this problem. 16.8) If L is a straight line in the plane, describe the topology L inherits as a subspace of ℝl × ℝ and as a subspace of ℝl × ℝl (where ℝl is the lower limit topology). Homework Equations The Attempt at a Solution I've...

what are the three situations in which light does not travel in a straight line? I know two situations; Superposition and Spectrum. What is the last situation?? Is that Wavelength?

A car moving with uniform acceleration along a straight level road, passed points A and B when moving with speed 6m s−1 and 14m s−1 respectively. Find the speed of the car at the instant that it passed C, the mid-point of AB. My working: acceleration from AB: v = u + at, 14-6 = at, 8/t =...

A car of mass 900 kg is towing a trailer of mass 300 kg along a straight horizontal road. The car and the trailer are connected by a light inextensible tow-bar and when the speed of the car is 20m s−1the brakes are applied. This produces a braking force of 2400 N. Find a the deceleration of...

Hey, how do I determine whether or not points lie in a straight line? Is there a symbolic approach to determining so? Or do I need to spatially visualize it? For instance, A(0,-5,5), B(1,-2,4), C(3,4,2) does lie in a straight line according to my book. Thanks!

Homework Statement Prove that the shortest path between two points in three dimensions is a straight line. Write the path in the parametric form: x=x(u) y=y(u) z=z(u) and then use the 3 Euler-Lagrange equations corresponding to ∂f/∂x=(d/du)∂f/∂y'. Homework Equations Stated them...

I have seen solutions of many problems in which an object going in straight line has angular momentum, especially those use conservation of angular momentum. For example, a person throws a ball at a rod that is hung vertically at one end. The solution says that at the moment before the ball hits...

Homework Statement Assume that a force acting on an object is given by F=axi+byj, where a=2.9 N/m and b=3.9 N/m. Determine the work done on the object by this force as it moves in a straight line from the origin to r=(10.0i +21.5j) The Attempt at a Solution i used the given info to...

does it have uniform velocity?

There are plots that compare the expectation value E(a,b) of (i) a hidden variable theory (ii) quantum mechanics For example here: 1. Talk given by Alain Aspect, video at 2m28s 2. PF Thread: The Unfair Sampling Assumption & Bell Tests For the hidden variable theory the expectation...

Homework Statement I have an issue with Straight Line graphs, I have never done them before (I touched on them in Seconday School, y=mx+c that sort of stuff) Now I've been faced with a problem that I need to learn. It's not homework it's revision but I thought it was more relevant to post here...

Homework Statement A body moving in a straight line with constant accelaration takes 3 seconds and 5 seconds to cover two successive distances of 1m.Find the accelaration? Homework Equations The Attempt at a Solution

Hi. I posted this in the Homework question but after 152 views with no right answer, my question looks analytical and rigorous enough to be posted here. Thank you... ---- I am asking about part iv). [PLAIN]http://img715.imageshack.us/img715/7977/113ivb.jpg Attempt at a solution...

Homework Statement 1)The normal to C ( 3y = x + 20 ) at P (4, 8) cuts the x-axis at the point Q. Find the length PQ, giving your answers in a simplified surd form. 2) write \dfrac{2\sqrt{x} + 3}{x} in the form 2x^p + 3x^q where p and q are constants Homework Equations y = mx + c? I'm not...

Homework Statement I am asking about part iv). [PLAIN]http://img715.imageshack.us/img715/7977/113ivb.jpg Homework Equations I guess they would be the ones in the earlier parts... The Attempt at a Solution In the given fact, I think x^3 - x - m(x - a) distance from the...

I was having trouble understanding a concept in my physics class regarding work. If you have a 1000 lb weight being lifted 10 feet in the air would that have the same amount of work done as lifting a 1000 lb weight on a rigid pivot with a radius of 5 feet? if anyone could help explain this to me...

When you shoot a single photon, wouldn't the oxygen, and other atoms in the air we breathe move the light off it's trajectory. Won't the light hit any atoms or bend away from the atoms. Does light bend in air? Does it bend to avoid striking the atoms? How do we see straight lines, how do we...

Homework Statement A straight nonconducting plastic wire 8.50 cm long carries a charge density of +175nC/m distributed uniformly along its length. It is lying on a horizontal table top (a) Find the magnitude and direction of the electric field this wire produces at a point 7.00cm directly...

my book says a straight line segment has no perpendicular bisectors I don't see why. I think it's rather obvious that it does.

Straight line, "fractional difference" Homework Statement To set a speed record in measured (straight) distance d, a race car must be driven first in one direction (in time t1) and then in the opposite direction (in time t2). (a) To eliminate the effects of the wind and obtain the car's speed...

Homework Statement The diagram (http://i83.photobucket.com/albums/j282/missingyoub4urgone/Physicsyahoohelp.png) tracks the location of an object moving in a straight line along the x-axis. When is the object (a) farthest from the origin, (b) at rest for an instant, (c) in the midst of being at...

Homework Statement find the equation of the straight line which is parallel to the line 3y+4x=6 and passes through the point F (1,7) Homework Equations The Attempt at a Solution 3y= -4x + 6 y= -4/3x + 2 im not sure what I am doing...im i on the right track

Homework Statement find the equation of the straight line which is perpendicular to the line 5x-3y-6=0 and passes through the point (-3,4) Homework Equations The Attempt at a Solution -3y=-5x+6 where do i go from there

Homework Statement Find the equation of the line perpendicular to Homework Equations −8y − 8 − 16x = 0 and passing through the point (18, 0). The Attempt at a Solution -8y = 16x +8 y = =2x -1 -2(x-18) = y - 0 -2x +36 = 0 -2 x = -36

Homework Statement Determine whether the points lie on a straight line. a) A(2,4,2), B(3,7,-2), C(1,3,3) b) D(0,-5,5), E(1,-2,4), F(3,4,2) Homework Equations The Attempt at a Solution I tried graphing to see the points A B and C to see if they looked like they were in...

I think this is a simple question but I cannot find the answer on the Internet. What trajectory would have a bullet if fired in a straight line towards space from the equator? 1- Assuming there is NO gravity involved, 2- Considering that the bullet is going at a constant velocity, 3-...

So the general tactic for straight lines: f(x) = 2x Show by epsilon-delta definition of limit, as lim x->2, f(x) tends to 4. let, ε>0, and choose 0<δ<ε/2 (|x - 2|<δ)→ |f(x) - 4| = |2x - 4| = 2|x - 2| < 2δ < ε No problem, but what about for a parabola? g(x) = ax2 for some a in R. Show as lim x...

1. Suppose, a fast moving train (600,000 km long) running on straight line at speed 0.999c, perpendicular to A. 2. A is at point P. B stands in center of train. M point. Distance P to M is 300,000 km. C stands at end of train. D stands in head of train. 3. Now B flash light. According to B...

Homework Statement If an opaque object is placed between a source of light and a screen, a sharp shadow is obtained on the screen. This shows that light travels in straight lines. I don't understand this statement...How a sharp shadow on the screen proves that light travels in straight line...

Homework Statement A particle of mass m moves from infinity along a straight line that, if continued, would allow it to pass a distance b/Sqrt[2} from a point P . If the particle is attracted toward P with a force which is: \frac{-k}{mr^5} radially inwards. If the angular momentum is...

What is the change in velocity when: a) 6.0 m/s becomes - 15 m/s b) 5.0 m/s East becomes 15 m/s West My doubt is mainly the notation: How I should answer, here is my try: a) -9 m/s with 180 degrees change in direction b) 9 m/s with from direction bearing 90 degrees to 270 degrees...

Homework Statement The questions and my answers are all on the attachment below s Homework Equations The Attempt at a Solution

A cat and a mouse see each other at the same time. The distance between them is 40 meters. The mouse moves in a straight line - perpendicularly to the line joining the two. The cat always moves towards the mouse. Each moves at 20 m/s. What is the closest distance the cat can reach the mouse...