Urgent Definition and 393 Threads

Magnetic Field Problem! Urgent! HELP! PLEASE! MAGE IS ATTACHED! COPY URL into address bar.. harmonphys.info/magnetism%20problems.doc The magnitude of the magnetic field in teslas at a distance d from a long straight wire carrying a current I is given by the relation B = 2 X 10 7 I/d. The two...

A force of 8.4 N holds an ideal spring with a 31.9 N/m spring constant in compression. How much potential energy is stored in the spring? I would think it would be PE =mgh to get m you divide the force/g but now I am not sure what to do after that. Any help would be great!

Homework Statement In a shipping company distribution center, an open cart of mass 51.0kg is rolling to the left at a speed of 5.50m/s (see the figure). You can ignore friction between the cart and the floor. A 10.0kg package slides down a chute that is inclined at 37degrees from the...

Poisson's Ratio coursework - Urgent help needed! hello, I'm currently working on a coursework for my A2 physics on Poisson's ratio i'm finding the ratio for aluminuim using aluminuim foil and strain gauges, adding masses to a clamp on the end of the foil (so foil is under tension) and...

Homework Statement The coordinates of a the vertices of a triangle are given: A(x1,y1,z1) B(x2,y2,z2) C(x3,y3,z3) and the sides opposite each vertex are a,b,c respectively. Find the coordinates of the incentre. The Attempt at a Solution I have been frequently using the formula...

1. Homework Statement We usually ignore the kinetic energy of the moving coils of a spring, but let's try to get a reasonable approximation to this. Consider a spring of mass M, equilibrium length L0, and spring constant k. The work done to stretch or compress the spring by a distance L is...

Homework Statement A 2kg block and an 8kg block are both attached to an ideal spring for which k=200 N/m and both are initially at rest on a horizontal frictionless surface. In an initial experiment a 0.1kg ball of clay is thrown at the 2kg block. The clay is moving horizontally with speed v...

Please Help ...Urgent ! Don't know how to solve 1. Homework Statement [/b] 3 concentric spherical shells r = 1, r = 2, and r = 3m and have charge distributions 2micro C/m^2, -4microC/m^2, and 5 microC/m^2. Calculate the flux through r = 1.5m and r = 2.5m How to Do? please help...don't know...

Homework Statement Find an equation of the tangent line to the curve y=2x-x^2 at the point (2, -4). Homework Equations y=2x-x^2 The Attempt at a Solution I do not have any idea how to do any derivative, other than the equation to do so. Please note that we have been given the...

Urgent ! Center of mass and relevant stuffs Homework Statement A vertical spring of constant k is attached at the bottom to a platform of mass mp, and at the top to a massless cup. The platform rests on a scale. A ball of mass mb is placed in the cup. What is the reading on the sacle when...

Hi, I am studying an engineering program in university. I have a piece of lab coursework to do and I am struggling to find information on it. The lab report was based on 'The discharge of a capacitor with time using an oscilloscope' It sounds silly but what is the theory of a capacitor...

Homework Statement http://img166.imageshack.us/img166/6047/cilinderox6.jpg Homework Equations Tangent Acceleration, Linear Acceleration The Attempt at a Solution I tried to made a free body diagram but i got confused with the inclined plane I am stuck there. Also with the...

Urgent question but simple problem:Phase difference Homework Statement What is the phase relationship between voltage and current? i = 5sin(wt+30) V = 10sin(wt+140) Homework Equations The Attempt at a Solution it seems that drawing using cartesian, the voltage is leading the...

For one of my semester finals, my teacher wanted us to write a paper on the New Deal. He did not specify any sort of topic except to be very analytical. We were required to read several texts and incorporate it into our writing. the first text is FDR's speech in October 31, 1936 in Madison...

Urgent help! Vector Calculus question... Let S be the surface given by the graph z = 4 - x2 - y2 above the xy-plane (that it is, where z \geq 0) with downward pointing normal, and let F (x,y,z) = xcosz i - ycosz j + (x2 + y2 ) k Compute \oint\ointsF dS. (F has a downward pointing normal)...

Homework Statement I was trying to apply the formula of bridge Homework Equations V_{o} = (\frac{1}{1+R4/R2})-(\frac{1}{1+R3/R1}) The Attempt at a Solution File is attached...Small numbers with resistor names are their values in ohms... the answer I get is 6v...Here it is 1.5 v...

Urgent: 1. let p be prime form 4k+3 and let a be an integer. Prove that a has order p-1 in the group U(\frac{\texbb{Z}}{p\texbb{Z}}) iff -a has order \frac{(p-1)}{2} 2. let p be odd prime explain why: 2*4*...*(p-1)\equiv (2-p)(4-p)*...*(p-1-p)\equiv(-1)^{(p-1)/2}*1*3*...*(p-2) mod p. 3. Using...

Homework Statement Find the equivalent resistance between the two terminals :- Homework Equations Totally confused. The Attempt at a Solution Totally confused here as well...

I am required to use getline() and sscanf() somewhere in my function to read standard input and store it into arrays. I have input like this: 10/10/08 12:00 A1:2.31:1:P 2B:1.98:2:g 2b:1.82:3:b the first line is the time, which i used strcpy to copy it to an array called time[] the...

Homework Statement FIND THE DERIVATIVES OF THE FOLLOWING FUNCTION: CUBEROOT OF ((x^3+1)/(x^3-1)) Homework Equations The Attempt at a Solution

URGENT! T and U paradox Homework Statement I'm really confused about how I should do this problem and this is urgent so if anyone can help, it would be very much appreaciated. Thanks. T and U Bar paradox (This is my assigned homework, it is an edit of question 6-5 from a textbook called...

http://img222.imageshack.us/img222/8623/69793936pc8.jpg http://g.imageshack.us/img222/69793936pc8.jpg/1/ Please Help some1?? To be honest I don't what to do...

How much work does an elevator motor do to lift a 500 kg elevator a height of 50 m? attempt: W = F.S.Cos90 = 0 J but i think its not right... Please help some1?

Urgent!HELP!A problem on 2D kinematics Homework Statement A flock of Canada geese directly fly above Kingston is flying due north at a speed of 25km/hr. A second flock directly above Gananoque, 30km to the east of Kingston, is flying in a northwesterly direction at the same speed. Assume...

Hey everyone. I'm finishing up a lab and a question has me stumped. I need to determine the products if NH4Cl + H2SO4 I THINK it's going to be H2O + SO2 + some kind of salt, but I'm not sure. Any help would be appreciated :) Thank you

Force Problem (urgent) http://maxupload.com Attempt: Y: Fnet = 0 n - wcos40 = 0 n = wcos40 X: Fnet = ma 1N + wsin40 -Fk = ma 1N + wsin40 -(.2)(wcos40) = ma 1N + 1.29 - .306 = .2a a = 9.9 m/s2 I am doing it right way. I asked b/c i feel something is...

Homework Statement An owl accidentally drops a mouse it was carrying while flying horizontally at a speed of 5 m/s. The mouse drops to the ground 10m below. What is the mouse's impact velocity? Give the answer as a magnitude and clearly defined angle. As of right now I'm not even sure how...

Any one Solution will be appreciated , just solve as soon as possible! 1) Fourier Series 2) Heat Equation

Homework Statement Hey guys, I have a problem here which I can't seem to tackle. I hope someone knows how to go about this. Here it is: "Their are 5!= 120 different ways of choosing a set of 5 numbers from the array (below) so that a number is takenn from each row and each column. In each...

I have just done an experiment with a glider on an air track and applied a force to it. Its velocity increased very slightly and was wondering are there any reasons, other than friction, why the velocity could change during motion? Thanks I thought this but i don't know if its right "There...

sorry for disturbing but holiday is coming Did you see any new monumental book like "cosmology is forever" or "the reactor started humming" or "the day after e.t" and so on? Thanks.

[SOLVED] Urgent help needed with complex numbers Homework Statement a complex no. z is represented by the point T in an Argand diagram. z=\frac{1}{3+it} where t is a variable show that z+z*=6ZZ* and that as t varies,T lies on a circle, and state its centre Homework Equations...

Homework Statement Given that log_{2}x = p a) Find log_{2}8x^{2} in terms of p The Attempt at a Solution take the power outside the log 2log_{2}8x but i can't see what to do next Any suggestions Thanks :)

Hi guys, I'm being asked to do a mini-project...Basically, i get a code in JAVA and "edit". Editting can be improving the interface, adding exception handling or adding features and so...I chose Sudodu as my topic..after much searching I found this code but I'm out of ideas, what can be improved...

Hello... If an object weighs 4500kg and travels @ 5kph (138cm/s) then stops in 15cm: what is Gforce? Decceleration? Also, if object was stopped via a collision and if contact face is 100cmx15cm then what is impact force kg/sq.cm? This information is really important to me for a...

OK, this is driving me nuts. I am learning how to use the calculator, and I can make perfect graphs for any function for x using the Y= Editor For ex. f(x)=y="function" But how do I make a a function for y? ex. f(y)=x="function" I jus spent an hour reading the manual and TI-89Titanium for...

Homework Statement Use work and energy to solve the following. A .1 kg ball is placed against a massless spring that has a stretch constant 50,000 N/m and is compressed 2 m. The spring fires the ball straight up. a) How far did the ball rise assuming no friction? b) The ball's actual rise was...

Homework Statement A fully loaded Cessna-182 airplane of mass 1290kg has an engine failure when flying with an airspeed of 139 km/h at an altitude of 2710 m on a calm day. it then glides at a constant glide angle(which is the direction of flight below the horizontal) towards a safe landing at...

Urgent Magnetic Field Problem! Urgent!please Help! 1. Homework Statement a) What is the direction of the net magnetic filed at P due to the currents? b) Determine the magnitude of the net magnetic field at P due to the currents. A charged particle at point P that is instantaneously...

Ok i have a few here that i have no idea what to do b]1. Homework Statement [/b] Find the nth term in the series 1/2, 1/3, 2/9, 4/27, 8/81, 16/243 also \Sigma (-1)^n-1/ 5n+1 find the sum Urgent help neededdd ahha.. Thanks

Urgent Physics Question++++! Can someone please help me answer these questions for physics? I need them urgently for an assignment that is due tomorrow. 1.) A person is trying to judge if a picture (mass = 1.10kg) is properly positioned by pressing it against a wall. The pressing force is...

Simple moments ! Can't do ! Urgent Homework Statement Determine the reactions at the smooth collar A, the rocker B and the shortlink CD. Homework Equations RC = Normal reaction at smooth collar A. RN = Normal reaction at rocker B. RD = Normal reaction at D. Moment at rocker B is...

Homework Statement 1. An automobile has a mass of 800 kg and is considered that the efficiency is 14%. (This is 14% of the energy in the fuel is delivered to the wheels). Find the quantity of gasoline used to accelerate the car from rest to 60 miles/h. Note: In this problem, one gallon of...

Homework Statement this is a lab task, i have found out the IV characteristic of the diode, now they ask me to suggest a procedure to find the constant A, in the equation I= AT^3 x exp (-E/ kT), T being the temperature, and I = saturation current Homework Equations i know how to...

Homework Statement this is a lab task, i have found out the IV characteristic of the diode, now they ask me to suggest a procedure to find the constant A, in the equation I= AT^3 x exp (-E/ kT), T being the temperature, and I = saturation current Homework Equations i know how to...

These were review problems for the test I have tomorrow. My teacher was not present the day these were given, so I could not ask him for help. The answers were given for these problems, but in terms of getting to these answers, I am totally lost. Can someone please explain to me how to...

Homework Statement ok, so i am writing my lab report which is due in tomorrow and the theory says that the graph of relative irradiance versus cos^{2}θ should be linear, the lab script has told me that i should expect the plot to deviated from the expected linear shape, so i have this...

Very Urgent: Need Help With Buffers! I have a test coming up on Tuesday and I have no idea how to do buffers, I don't understand what Value of the Ka we are suppose to use from the chart. I get the equation a little bit: [H+]= Ka x moles HB/moles of B- I am very lost please help!

I have Windows Internet Explorer, the version that has tabs like Firefox, but it has brioke, and this is a major problem, since it is the only computer I have that runs Mastering Physics. When I load up it starts up with a white screen. The address tab is at the top, but the status bar/tool...

[SOLVED] Really Simple Error Somewhere - Please Help - Urgent Homework Statement find gcd(63,45) Homework Equations The Attempt at a Solution gcd(63,45)=gcd(45,18) gcd(45,18)=gcd(18,9) gcd(18,9)= 2 which is wrong! should'nt it be 3?