Convert Definition and 586 Threads

I have a device that is currently running on 6 1.5V D batteries which I have to replace every 2 months as they drain very quickly. In theory would it be possible to take (say) a phone charger that puts out 9v and connect and make a circuit drawing from current from a wall socket? Obviously...

why we convert a galvanometer into voltmeter and ammeter?

How to convert density from mol/L to kg/m3?

How to convert density from mol/L to kg/m3?

I understand that the activity of a source is the number if disintegrations that take place per second in the source. But I do not know how to find the activity from the count rate and time. My question is how do you convert count rate into becquerels? Is there a formula that I can use? Or I...

Homework Statement The sound emitted by bats has a wavelength of 3.5mm. What is the sound's frequency in air? Assume that the bat is flying through air with a temperature of 30 degrees C. Homework Equations V=331.4 + 0.6*Temp.C V=wavelength*frequency The Attempt at a Solution V=...

Homework Statement Convert cos(7 t) + sin(7 t) into polar form of A cos(\omega_0 t - \delta) This is a review problem where once we convert this to polar form we are to give amplitude, period and delay (shift). I can answer this question if someone can point me to a website tutorial...

how can we convert any given alkane to any other higher or lower alkane without giving rise to any side reactions i tried to find many books but they all give wurtz,decarboxylation,kolbe synthesis but for all these steps we need to prepare their halogen deirvatives which are formed in...

how to convert string to num?? hi guys, I'm currently doing a GUI on MATLAB and I'm taking in a user input in a text box as string(not sure as wat), how can I convert it to a number? Any help on that, much appreciated. Thanks

Homework Statement 3. The following calculaltion shows how the ratio of e to kT affects the populations of different energy levels. kT is sometimes called the thermal energy; if it is small relative to e, a particle will not be able to access higher energy states. Consider a harmonic...

I have very large equations that I need to solve using numerical techniques. The equations are in latex. From these now I need to form matrix in fortran and then continue the solution procedure in fortran. Can anyone advice how I can do this conversion from latex code to fortran code. The number...

Can anybody tell me the software name which changes a pdf file(text mode) which has been scanned and kept in pdf format actually i want to modify the data in that image ie one textbook has been scanned and that is put in pdf format I changed it into word with the converters(pdf to...

is there any quick way to convert numbers to fractions then back to decimals, without changing the mode. also if i type in log 54, it gives me log 54. i don't get an answer even if i put in ln 32 it gives me ln 32, not an answer. i've learned to input functional equations and make...

how do i convert km/hr to m/s?

Hello, Is there a formula to convert a certain radio frequency to temperature? Thanks.

hi, all, run into one geometry problem: I have two 3-D Cartesian systems, A and B. they share the same original. the coordinate (2,3,3) in B system is the same vector as (118,2090,1000)in A system( there may be scale difference, but they are the same direction); then what is the vector in B...

Homework Statement I need to know how to convert angular speed into revolutions Homework Equations W=2*pi/60 sec, but that's for rad over second The Attempt at a Solution w=2*pif

If I have a small model car and use a spring scale to measure the force, my reading is .130 kg. How do convert that to Newtons? Is gravity relevant to this equation? I know that F = m x a the mass of the car is .387 kg is the accerleration the acceleration of the car or gravity?

1. Convert to logarithmic function: e^3=0.0498 3. ln(-3)=0.0166 is my guess

how to convert DC to AC?? how can i convert DC to AC from a battery(any voltage) for a transformer...?

Hi, I have to convert my force constant from N/m to kcal/(mol*m^2) but I don't know where to start. Any help appreciated. Thanks

Homework Statement Covert the following numbers to 12-bit binary numbers using two's complement representation. 234 -234 Homework Equations None I know of. The Attempt at a Solution I think I'm making this more complicated than it really is. For 234 I can just convert right to...

Homework Statement Convert the following integrals into polar coordinates and then calculate them. a) int(0 , 2^(1/2)) int(y, [(4-y^2)^1/2]) xydxdy . Homework Equations x = rcostheta y = rsintheta r = (x^2 + y^2)^(1/2) The Attempt at a Solution Would it simply be: int(0...

Hey all.. Anybody worked on an ADC ic capable of converting an analogue signal with 1GHz frequency or more to Digital signal of say 10 bits or more ?? Thanks for you time SCHNiTZER

Homework Statement "convert the gas constant, R, into units of ft•lbf/lbmol•°R. Data: R = 8.31451 J/mol•°C. " Homework Equations I know 1 J = 0.22481 lbf but what's R, and how they can get ft and lb in there? The Attempt at a Solution

Homework Statement Write equation in polar form. y=3x+4 Homework Equations x^2 + y^2 = r^2 x = rcos(theta) y = rsin(theta) tan(theta) = y/x The Attempt at a Solution Square both sides... y^2 = 9x^2 + 24x + 16 r^2 - x^2 = 9x^2 +24x +16 r^2 = 10x^2 + 24x + 16 And...

Homework Statement Define a dimensionless radial coordinate as x\,=\,r\,\sqrt{\frac{2\,h}{b\,k}} and introduce y\,=\,T\,-\,T_a, and thus show the elementary equation x^2\,\frac{d^2y}{dx}\,+\,x\,\frac{dy}{dx}\,-\,x^2\,y\,=\,0 describes the physical situation. It gives the "physical...

hey can anyone give a calculator(like any html link) or something of that sort which can convert units, like from british system to SI units and vice versa. looking at the tables everytime is sooooo boring and i am fed up of it.for eg. changing lengths, pressure, weight etc. etc.:-p:-p

How can I convert the following: 45.2 Km/h into m/s 30.5 m/s into km/h - A car moves at 18 m/s [E] and experiences a displacement of 450 m [ E]. How long did this trip take? How can I solve these? - A batmobile is moving with a constant velocity toward the north. Batman decides to...

i've seen a film which was orignally black and white but after 50 years or so they made it colour. how did they do it?

Homework Statement f'(x) = 5x^2 + 7x -3 The attempt at a solution i divided 5 by 3 to get 5/3 added 1 to exponent of 5x^2 made 7x to 7x^2 and -3 to -3x to get f(x) = 5/3 x^ 3 + 7x^2 - 3xi get this answer, but is there and other way to get the original function and other possible answers...

Homework Statement The question asks the reader to make a Bode plot for the following equation: H(\omega)\,=\,\frac{50\left(j\omega\,+\,1\right)}{j\omega\left(-\omega^2\,+\,10j\omega\,+\,25\right)} Homework Equations j\omega\,=\,s The Attempt at a Solution...

I have this baseball game on my DVR, and there's a segment of it that I wish to convert to my computer into a slow motion MPEG and I was wondering what the process is for going about this?

how do you convert rev/sec to a linear velocity ex. m/s or in/s or ft/s?

I wrote up some proofs in MS word using eqn. editor. Is there a way to conver that to tex so I can post it here? I don't want to post the word file using a flie share service because the link expires after about a month.

How to convert C-12 / C-13 to C-1, does anyone know how this can be done, how much energy will I need to bang out a neutron?

Homework Statement A 20 ohm platinum wire at 20 C with a temperature coefficient of resistivity of 3.9 x 10 ^-3 /C will have what resistance at 100 C? I know how to answer this in watts and I get 26 W, but for some reason my only options are in ohms. how do i convert Watts to ohms? i...

Combine 1V @ 60A = 60Watts 250V @ 0.24A = 60Watts So my big question is, can I take that two separately 60watt power supply = 120watt And make it give me a output of total 250V @ 60A = 15000Watts :rolleyes: Combine the to inputs and feed it to a transformer In theory, I will...

Homework Statement Hello, I have a language problem that affects my Math problem :-) I hope you can assist me with this. The Maximum range of a projectile is directly proportional to the square of it's velocity. A baseball pitcher can throw a ball at 60 min/h, with a maximum range of...

I need help in understanding how to convert waves from instantaneous form to phasor form: a wave expressed as E(z,t) = Eo * exp(-ax) * cos(wt - Bz) * ay How do i convert this wave to phasor form and determine its direction of propogation, phase velocity and wavelength? Thanks in advance...

how do i convert kJ to joules since that's the standard unit how do i convert mA to amperes how do i convert MV to volts

Does anyone know how to take Water H2O and convert it to Hydrogen peroxide H2O2, so basally I want to add another oxygen molecule to the existing oxygen molecule? I want to use the Hydrogen peroxide for a fuel, cheap fuel, don’t want to buy petroleum products anymore and I care about the world...

I want to convert canberrra CNF spectrum file to ASCII file. I found a program (IAEA, Winspedac) for converting, but program needed sad.dll file. :confused: Please help me. :cry: Thanks a lot.

Homework Statement Basically, I pretty much solved the problem I am working on. The fusion reaction I am working with is 2_1_H + 3_1_H --> 4_1_He + 1_0_n, and I determined the energy the reaction releases to be 17.5708 MeV. What I need to figure out now is how many of these reactions must...

if I am given a area density of 10^-4, I can get linear and volumetric density from that right? I just can't seem to figure it out.

Hi all, if I have a problem like: The path of a particle is described by y=4x^2, and it has a constant velocity of 5 m/s. How do I make a parametric equation out of this? I tried doing: r = xi + f(x)j r = ti + 4t^2j, but then v = \frac{dr}{dt} = i + 8tj, so |v|=\sqrt{1+64t^2}, and at, for...

Given: W = J/s, J = Nm, N = kgm/s2, Hz = 1/s Convert W2 / NJHz to mks and simplify. Can someone help me out with this please? Thanks.

Convert to Parametric Equation of surface? How would I go about converting 9x^2+4y^2+z^2 = 640 I tried just to solve for each variable but this doesn't seem rightfor example \sqrt{\frac{640-z^2-4y^2}{9}}=x \sqrt{\frac{640-z^2-9x^2}{4}}=y \sqrt{\frac{640-4y^2-9x^2}{1}}=z

it takes an input of energy to convert liquid to vapour ,so increse the entropy if an increase in entropy is natural, why does this not happen naturally with less effort on its own?

I'm starting this up in Engineering, but if it starts to go that way then perhaps Russ or Enigma could move it to the Politics forum? Before that happens I'd first like to bottom out technical issues. The question: What would it take to convert the US (and Canadian) automobile markets to...