What is Calculation: Definition and 1000 Discussions
A calculation is a deliberate process that transforms one or more inputs into one or more results. The term is used in a variety of senses, from the very definite arithmetical calculation of using an algorithm, to the vague heuristics of calculating a strategy in a competition, or calculating the chance of a successful relationship between two people.
For example, multiplying 7 by 6 is a simple algorithmic calculation. Estimating the fair price for financial instruments using the Black–Scholes model is a more complex algorithmic calculation.
Statistical estimations of the likely election results from opinion polls also involve algorithmic calculations, but produces ranges of possibilities rather than exact answers.
To calculate means to determine mathematically in the case of a number or amount, or in the case of an abstract problem to deduce the answer using logic, reason or common sense. The English word derives from the Latin calculus, which originally meant a small stone in the gall-bladder (from Latin calx). It also meant a pebble used for calculating, or a small stone used as a counter in an abacus (Latin abacus, Greek abax). The abacus was an instrument used by Greeks and Romans for arithmetic calculations, preceding the slide-rule and the electronic calculator, and consisted of perforated pebbles sliding on iron bars.
public class GravityCalculation {
public static void main (String [] args) {
double G = 6.673e-11;
double M = 5.98e24;
double accelGravity = 0.0;
double distCenter = 0.0;
distCenter = 6.38e6;
/* Your solution goes here */...
Hello everyone
Im new on the forum and I just discovered what are sync machines...
I have really basic question what I still cannot figure out.. I did some experiments with motor for different field currents and torques. In the result I measured armature currents and did V curves. But next...
I want to design the installation of a 500KVA Distribution Transformer to supply a neighborhood in Nigeria.
The Existing National Grid voltage is 11KV.
I want input from you guys to add to my sizing/costing.
Inputs:
1. Sizing of XLPE Cable
2. Sizing of Transformer HV Protection ( Current Rating...
Hi all. I'm working on a small project and could use help.
I have an 3/8" thick aluminum box that is going to be placed outside. The dimensions of the box are 33"x33"x33" and inside the box there is a 3/4 air gap on all sides that is covered with 1/8" hdpe platic walls.
There will also be a...
Ran into a bit of a dilemma. I'm having some problems calculating the moment of inertia for an offset weight configuration. Please see the attached drawing. Basically this offset weight will be turning around an axis as labeled in the drawing. Any help would be greatly appreciated
I do not understand how to calculate the equilibrium price of an object. Say i have the following information how would i set up the information to solve for the price?
Price of (Insert the name of your good or service) Quantity Demanded Quantity Supplied (in this order.)
\$7.99, 35, 21...
Hi all,
I am not a physics major and have spent some time learning via the university of Google. I would really appreciate a second set of eyes on what I am calculating and tell me if I am correct, or if I have done something wrong along the way. I am trying to calculate MOI and need results...
A lab mate and I are discussing how to properly interpret LCMS results and coming to different conclusions.
We are taking a solid food sample and extracting it with 50:50 acetonitrile/water to determine the concentration of melamine in the food sample. Standard solutions were made that range...
Hello all, I am posting this question here in this thread and not the homework thread since it is not a homework problem but something I have been working on myself.
Let us imagine a fluid flowing through a pipe, we can measure pipe diameter and fluid velocity. The density of the fluid is also...
Hello to everyone!
I am trying to understand in practice the Gravitational Time Dilation by calculating the time distortion near the supermassive black hole Sgr A* in our Galactic Center.
According to Einstein's Theory of General Relativity, the time distortion near a black hole is calculated...
Okay this has has been driving me crazy.
I would like to know how a conveyor speed can be calculated on the basis of chain pitch, sprocket PCD & no. of teeth and output RPM of gearmotor.
So here is a practical example I'm having to solve at the moment:
I have to drive a conveyor at a speed of...
I have ran an FEA analysis on part screenshot below. I wanted to do some hand calculations to validate the results. What formula should I use to calculate the stress?
Hello everyone,
So for a personal project I want to calculate the force necessary for a solenoid (electromagnetic coil) to keep a permanent magnet triangle locked diagonally up and down at the same time so that it does not move in any direction. I need to know the values for coil thickness...
Hi guys, I am having trouble seeing where I have actually gone wrong with my code. If I run the code I am getting approximation of 12 as my lowest is way to big. But I am really struggling to find where I have gone wrong. Any advice would be appreciated.
PROGRAM assign_10_1
IMPLICIT NONE...
Hi,
Really need some help with figuring out the max bending moment in the diagram shown below (I'm aware this is extremely simple but time and stress appear to have the better of me, so any help is appreciated)
I think I've worked out the reactions at each support by doing m=wL as the...
Anybody know how calculate the noise with equipartition theorem method?
For a simple RC one order filter. The noise charge across the capacitor is Q. we have 1/2*k*T=1/2*C*(Q/C)^2
For a more complicated network as below. Can you help me on how to calculate the total noise charge or voltage...
Homework Statement
Find the electric field a distance ##z## above center of a square loop of wire,each of whose sides has length ##l## and uniform charge per length ##λ##
Homework Equations
##dE=\frac {1} {4πε_0} dq \frac {1} {r^2}## (magnitude)
The Attempt at a Solution...
Is there a way to estimate the upper limit and lower limit of time for doing a work?
Suppose we are learning a page of facts and want to estimate the upper and lower limit of time taken to do so. If we start estimating the time we will find that the pages are learned in some variable periods of...
When dealing with a beta ^+ decay in the calculation of the disintegration energy Q, one includes the mass of 2 electrons.
But the output result is 1 electron in the fundamental reaction:
p => n + ( e^+ ) + v
Where the neutron n has a neutral charge and the neutrino v has Z = 0.
So why does...
Hi,
I'm a student in electrical engineering and I'm writing my master thesis at the moment. Ironically I'm now confronted with the deformation of springs. I'm not a physics (!) but I think and hope that you may can help me. Simple push and pull forces are not the problem.
I need to calculate...
Hello,
I would like to know how to calculate the negative energy density in the region between two Casimir plates, given a distance between two parallel plates.
Thanks, much appreciated!
I have authored documents of 40 years of computer software development with a mind to collect them into a publication at some point. They have been built around several software topics but mathemetics is a favorite of mine. I find a point of inspiration and write a piece of software around it...
I'd like to calculate the matrix element amplitude for## b→s l^+l^−## penguin diagram mediated by Z boson or the photon , like :
These calculations are made of course from many time ago, so if anyone has a good reference for such calculations, because it's my first trail in a penguin loop ...
Dear All,
I am looking for a method to calculate the friction stresses created in 1 mm thick, fully supported, slide of soda-lime silica glass.
In this experiment a 1/4" ball bearing of various metals is being translated over the glass surface under a constant load of 2000g. The glass slide is...
Homework Statement
for the opamp circuit give in the figure, find Vo(t) for t > 0
the figure is attached.
Homework Equations
I know that tau = R * C
that is the time constant of a capacitor discharging is equal to the product of the resistor that it discharges through and its capacitance.The...
Homework Statement
A wheel of moment of inertia 5×10-3kg-m2 is making 20 rev/s. Find the torque required to stop it in 10s is
(A) 2π×10-2Nm (B) 2π×102Nm
(C) 4π×10-2Nm (D) 4π×102Nm
Answer - (A).
Homework Equations
ω=2πƒ (ƒ=frequency)
Power (P) = Γω.
P = W/t.
W = ΔK.E. = (1/2)Iω2.
The...
I noticed that my windshield washer fluid has methanol in it to reduce the temperature of which it freezes. I know it freezes at approximately -28°C which gives us a concentration of MeOH at approximately ~30% by weight.
However, when I try to calculate the required methanol using the mSolute...
Homework Statement
Basically having a problem when trying to theoretically calculate the mass of alpha particle in a charged field.
r is the unknown radius of curvature
m = mass of an alpha particle (6.646 *10^-27 kg)
v = velocity of an alpha particle immediatly after decay (1.381 *10^7 m/s)...
Hi guys
As per text...
To match 10k with 500Ω a coil is used as an autotransformer tapped at point 3...now for a certain bandwidth and centre frequency what should be the value of Lp and Ls...?? How do I calculate it..??
and
if the value of Ls and Lp is found out to be low then how could they...
We were measuring the amount of O2 dissolved in water by Winkler's method.
Here's a link to the procedure and reactions: http://file:///C:/Users/SANJUKTA/Desktop/Downloads/Capture.PNG http://dropcanvas.com/6su7m/1 (The same is attached to this post)
We had to use this formula: c(O2)...
I am confused! . In some books it is written that if the multiplier is less than 3.162 , the order of the magnitude of the number is the power of the ten in scientific notation , while in some books it is written less than 5 . What is right? Help!
Homework Statement : [/B]
Qstn no. 3.10 in the attached image.
[ Moderator note: Copy of relevant portion of attachment inserted to make it visible here]
Homework Equations : For power calculation, [/B]
Power = torque * angular velocity... Also, reduction gear is used to deliver lower outout...
Hi,
My teacher asked that i should design a efficient energy storage system for a plug-in electric vehicle. I have no idea how i can use some equations for designing this type of car.
The requirements are in below;
Test cycle range: 140 miles
Test cycle energy: 260Wh/mile at the output of the...
I used to have a slide chart that gave gpm through a level section of pipe (1/2" - 6") by measuring how long the exit stream was when it had dropped 4". Imagine a framing square with the blade on the pipe and the tongue hanging down in the stream. Slide the square out until the stream is...
Homework Statement
I have calculate my double integral using wolfram alpha , but i get the ans = 312.5 , but according to the book , the ans is = 0 , which part of my working is wrong
Homework EquationsThe Attempt at a Solution
Or is it z =0 , ? i have tried z = 0 , but still didnt get the...
Hi everyone!
I am trying to create a crude electron-hopping model to study conductivity in a biological wire composed of discrete sites. The model is pretty simple: imagine a line composed of sites. Electrons can hop from site to site with probabilities that depend on the free energy difference...
Hi i was thinking about how to calculate the temperature lost by Degree Celsius per minute and was wondering if you had the surface area of the object, its initial temperature, a constant flow rate of air around the object and probably also need some coefficient of heat loss based on the...
Hi all!
How can I set up the amplitude of a wien bridge oscillator made like this?
Let's suppose that the bottom resistances are (from top to bottom) R1, R2 and R3.
We know that for oscillations to start and converge we need:
R1 / R3 > 2 (let's suppose 2.2)
(R1 || R2) / R3 < 2 (let's...
I would like to get a clue of how to arrive at the power and frequency for an Induction heater. I am planning to heat a graphite rod upto 1200 degC and also to provide a heat flux of 1 MW/m2. The graphite rod dimension will be for one case Dia 5 and length 100 mm and in the second case will be...
Hi,
It's a real life math question and this seems the best place to ask.
Me and my friend started a business together on 50% partnership bases. (cost divided by both and profit shared by both).
My friend was lacking some money, so I added additional amount to cover his share.
It's a garments...
Homework Statement
A 1.250 g sample of ##C_8H_18## is burnt with excess oxygen in a bomb calorimeter. Change in temperature is from 294.05 K to 300.78 K. If heat capacity of the calorimeter is 8.93 kJ/K. Find the heat transferred to the calorimeter. Also calculate the enthalpy of combustion of...
Using the regression eqn. Find the base resistance of the thermistor.
Find the temp. Of the boiling water using this eqn.
Y=1.54e^-0.059x
How do I go about solving this problem
There is waterpipe with smooth interior wall as shown in the figure.The curve of waterpipe could be describe as function ##q_y=f(q_x)##.
A ball going through this pipe was put at ##O## point with zero initial speed.At the point ##(q_x,q_y)##,the speed of the ball could be decomposed as...
Homework Statement
"A stream of sand moving at 4 m/s is directed horizontally eat against a wall at a rate of 120 kg per minute. If the sand falls vertically downward after impact, find the horizontal force exerted by the wall on the sand, and the horizontal force exerted by the sand on the...
[Mentor's note: This thread was moved to the homework section from General Physics, so it doesn't use the template.]
Going over a basic kinematics problem with the prompt stating vi=0, x=1000m and Δt=5 and vf and a need to be solved using average v and a. Calculated vf=200ms and a=40m/s/s. But...
Hi,
I am following this particular article from machinedesign.com about properly sizing a pneumatic system - http://machinedesign.com/archive/right-sizing-pneumatic-motion-systems
In the section Valve Exhaust Port, he does a calculation for the valve loss coefficient and arrives at 1.833 cfm...