Convert Definition and 571 Threads

kg/kWhour into litres/100m? is this possible, and if so how? what happens to the hour?

Hi PF, It might sounds stupid but if I don't ask I'll not know until I reach another turning point in my life. I'm currently studying in Argentina and I'd like to know if there is a website or something like that that can tell what is my GPA in function of my average. Here we're evaluated...

In the world we live in, we can convert and use energy in the form of radiation and turn it into a significant power source. Gravitatoinal energy, which exists throughout the whole universe could be used someday as a power source. Think of it. A power source abundant throughtout the universe...

Homework Statement I had an exam conversion problem: A position vector (between the origin and point (5,2,3) is expressed as r = 5x+2y+3z. Express this vector in cylindrical coordinates. row = SQRT(5^2 + 2^2) = 5.385 Fie = tan-1(2/5) = 21.8 degrees Z = Z. This was a multiple...

I am seeking help with the theory of energy conversion from kinetic energy to electric energy. Is it possible to convert kinetic energy to electric energy at an efficiency higher than 75% If so, how? Specifically, I mean not using heat (cogeneration power plants) or potential energy...

Hello. I have a small problem. I have a CFD run going on our universities cluster. For those runs, I use a fully structured code that uses plot3d formatted files. Rather than have to go in there and look at them, I would like to look at them here at work, where we use CFX. In short, is there...

Does anyone knows what this unit "a.u" means? I found it on many graphs, where "a.u" represents the unit of |E|^2 (E represents electromagnetic field). How do I convert "a.u" to SI unit?

Homework Statement Convert to standard form ODE system y0 = f(t, y): t^2y'' + sin(y') + 2y − 1 = 0 the goal is to reduce the equation above to be a first order ode. Homework Equations The Attempt at a Solution I tried to introduced a new variable but the sin(y') seems tricky.

I am reading something about thermodynamics and everything are not given in SI units. In the material, they use Fahrenheit for temperature, BTU for heat, lb for mass and in^2 for area. Now I need to calculate something with the data given in those units, well, I need to apply equation for ideal...

Homework Statement Hi, I am really stuck on this problem, I've been finding equations to convert the EAS to TAS but none of them have temperature involved. 2) A Boeing 747 is cruising at an altitude of 10,000m the pilot looks at the air speed indicator (calibrated for ISA) which...

Homework Statement r^2= 2cos^2 θ+3sin^2θ Homework Equations X= r cosθ y= r sinθ The Attempt at a Solution √r=√2cos^2 θ+3sin^2θ r = 2 cos θ+ 3 sin θ r = 2x + 2 y. I doubt that i even got close to the correct answer so I like to ask anyone who knows how to deal with this...

I have a set of pairs (NAME X DATE) that are returned from a pre-defined function, Member. I want to convert this to a sequence, such that the earliest DATE is first in the order. After spend too much time on this, I would like to ask the group what is the best way to convert the set...

Hello, How do i convert 1/3 to floating point (IEEE 754) ?

Homework Statement This is my last question about triple integrals in cylindrical coordinates. Evaluate the integral by changing to cylindrical coordinates: \int _{-3}^3\int _0^{\sqrt{9-x^2}}\int _0^{9-x^2-y^2}\sqrt{x^2+y^2}dzdydx Homework Equations In cylindrical coordinates...

I have arbitrary input numbers, and an arbitrary output. I want a program to automatically give me a function (various constants and mathematical symbols) to convert from the input to the output. What's the best way of doing this? Are there any programs to do this for you, perhaps which use...

Homework Statement Cylindrical: (5,5,53.2) Cartesian = ?? How bout Cartesian to coordinate? Any websites that shows all the conversions?

I need a conformal mapping that would map an ellipse or a circle to a line. I need this for the http://physics.indiana.edu/~berger/p506_fall2008/p506ps6.pdf" . As far as I can understand, z^2 + 1/z^2 makes the geometry similar to that of a plane on the horizontal axis with a circle centered...

any formulas pls.

Is there a wat to transform kg/m2h to m/s I'm not sure if kg/m2h is for Evaporation coefficient, Water flux,Drying rate or Mass transfer coefficient. However one of the can be transform to m/s (maybe Impingement velocity)

Homework Statement At 25°C, Kp = 1x10-31 for the reaction below. N2(g) + O2(g) <--> 2 NO(g) (a) Calculate the concentration of NO (in molecules/cm3) that can exist in equilibrium in air at 25°C. In air PN2 = 0.8 atm and PO2 = 0.2 atm. Homework Equations ?? The Attempt at a...

Homework Statement When 10.00 mL of a solution of strong acid is mixed with 100.00 mL of a solution of weak base in a coffee-cup calorimeter, the temperature falls from 25.7oC to 20.7oC. Determine q for the acid-base reaction, assuming that the liquida have densities of 1.00 g/mL and the same...

If matter were to travel the speed of light, would it convert to energy?

Homework Statement Convert the following cylindrical coordinate vector to a Cartesian vector: \overrightarrow{A}\,=\,\rho\,z\,sin\,\phi\,\hat{\rho}\,+\,3\,\rho\,cos\,\phi\,\hat{\phi}\,+\,\rho\,cos\,\phi\,sin\,\phi\,\hat{z} Homework Equations...

Hi everyone, What I am wondering is if there is a way to convert 5 volts to 12 volts. The application I will be using this for is a USB driven motor. The USB cable can only handle 5 volts and the motor is 12 volts. So I am wondering if there is a device or something simple to build that can...

Hi as the single photon recoil is p=hbar k and k=2pi/lambda

Hi, I'm looking to create a simple circuit to convert current on a nominal 120VAC line into a voltage. I have a few designs but am having some difficulty keeping parts count low and maintaining accuracy. What I have is as follows: - I am using a shunt resistor, outputting 1mV per ampere of...

Has anyone got any ideas on how to convert a 240v, mig, 180amp, welder to output pure DC to enable the use of gasless wire.

Hello, I have a circuit that i will be running the IO lines a reasonable distance, and i would like to amplify the lines from the current 3.3Volt to 5.0volt. I'm sure this is probably a simple task and (hopefully) their is a single IC someone could direct me to. I thought that maybe a Darlington...

Homework Statement I'm trying to solve a double integral of a function which is bounded by the ellipse: \frac{(x-2)^2}{16}} + \frac{(y-4)^2}{36}} = 1 And I can't figure out how to write this in polar coordinate form, and also what my bounds for theta and radius would be. Homework Equations I...

This should be relitively simple: y = x ... convert to spherical coords: p*sin(r)*sin(t) = p*sin(r)*cos(t) which reduces to... sin(t) = cos(t) tan(t) = 1 (is this right?) t =~ 0.78... (Can i get a nice fraction for this?) Any help is appreciated. - glog

V (Voltage) or I (income) or ... can be convert to magnetic field?

Hi. How do you convert watts per metre squared to decibels? I know you use logs but can't seems to work it out. Thanks for any help.

Today’s world would seem to dictate that a changeover is needed from DC powered operations to AC for drilling rigs. Is this actually true? Is AC a better deal or a sleeping dog best left alone? DC rig operations have been in existence for many years and have proven reliable so, why the interest...

Is there a general procedure to convert or transform a function that is defined on a flat space into an equivalent function in curves spaces?

I have a data acquisition device that outputs 3 volts if the sensor is activated. My relay only activates when a 5 volt source is put across the coil. What is the easiest way to step up the 3 volt control signal.

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.