What is increase: Definition and 865 Discussions

In Demography, the rate of natural increase (RNI), also known as natural population change, is defined as the birth rate minus the death rate of a particular population, over a particular time period. It is typically expressed either as a number per 1,000 individuals in the population or as a percentage. RNI can be either positive or negative. It contrasts to total population change by ignoring net migration.
This RNI gives demographers an insight into how a region's population is evolving, and these analyses can inform government attempts to shape RNI.

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  1. G

    Why does tension increase with distance

    I don't get why the tension force should increase up to a point in a stretched metal wire as the wire is extended surely whatever attractive force exist within the wire (I am familiar with metallic bonding) should get less as you increase the average distance between the particles. I am very...
  2. Loren Booda

    Where to best increase efficiency?

    What processes, mechanisms or basic physics could experience an increase in efficiency best for world society?
  3. M

    Finding the Rate of Change of Area in a Changing Triangle

    Need help guys, not understanding this at all. Can anyone help me out? Two sides of a triangle and their included angle are changing with respect to time. The angle increases at the rate of 1 radian/sec, one side increases at the rate of 3ft/sec, and the other side decreases at the rate of...
  4. D

    Is there any way for the entropy to increase in an closed adiabatic sy

    1) Is there any way for the entropy to increase in an closed adiabatic syatem? 2) what are the mechanisms of entropy generation within a closed thermodynamic system? Thank you
  5. L

    Increase UPS run-time with bigger batteries?

    i have two UPS's that protect my computers and entertainment system. I'm at less than half the kva rating of each of the UPS's but the runtime is too low for my liking. they both run with 4 qty 6V sealed lead acid batteries. my question is: can i simply use higher AH capacity batteries...
  6. S

    Medical How to increase the vital capacity of my lung?

    I know working out will certainly help...as well as meditation. But what else? Is there a certain yoga, tai chi,etc. or exercise which will benefit the most?
  7. L

    Increase the mechanical advantage of geared jib crane machine?

    How can you increase the mechanical advantage of geared jib crane machine?
  8. Repetit

    Light hitting a dielectric, increase of momentum

    When light propagates in a dielectric its wavevector is given by: k = \frac{\omega n}{c} where n is the refractive index. If light propagates in vacuum n=1 the momentum is \omega / c but if light propagates in a dielectric of for example n=1.33 the momentum is increased beyond the...
  9. M

    Increase Velocity of Mass on String: Analyzing Kinetic & Potential Energy

    We've got some small mass on the string which is in rotatory movement in horizontal plane. let,s say that the velocity is v and the radius is r. Let's increase the speed of the mass by 'doing some movements with our hand'( we hold the string). Now the potential energy is greater than it was...
  10. J

    Does IQ Increase More at 18 or 25+ Years Old?

    do you think your iq is higher when you're 25 or older compared to when you're in your late teens?
  11. T

    Does Balloon Lift Force Increase or Decrease with Altitude?

    As a helium balloon increases in altitude, the density of the air inside decreases. However, the density of the air surrounding it (The atmosphere) also decreases with altitude p=p0*exp(-z/z0), where z0 is the scale height of the atmosphere. So does this mean the lift force acting on the...
  12. H

    Math Modification to Increase Air Efficiency in a Paintball Gun

    hey guys, I am new i didnt exactly which section to put this in...but i know it involves math so whatever ok i was on a paintball forum and this guy came up with a modification to do to a gun to increase air effiency (which is a very important aspect in a gun) In the firing chamber of...
  13. C

    Isothermal increase in pressure of solids

    Homework Statement How do you express work in an isothermal increase of pressure of a solid in terms of the initial and final pressure? Homework Equations van der waals equation W=Integral of PdV (P-na/v^2)(v-nb)=nKT P=pressure V=volume n=number of molecules(constant)...
  14. B

    Angle for n-fold Magnitude Increase of A→ +B→

    Two vectors A→ and B→ have precisely equal magnitude .For the magnitude of A→ +B→ to be larger than the magnitude of A→ - B→ by the factor n, what must be the angle between them?
  15. T

    Can we increase the wing area vertically?

    hmmm... i was just wondering, if we increased the area of a wing and sacrifice drag, we should get more lift right? and if we got more lift, should we not be fly with a low velocity? And I am not talking like gliders and increasing the wingspan, I am thinking about increasing their area...
  16. L

    Why is the phenomenon of increasing entropy not as straightforward as it seems?

    Can't the phenomenon of increasing entropy be explained as a result of the fact that in a collision of two particles the higher-energy particle always passes energy to the lower-energy particle (and never vice versa)? Hence energy becomes more evenly distributed in space...
  17. D

    Increase of mass effect on orbit

    Just a some easy questions from a newbie here, in hopes of settling an argument. If the mass of the Earth were to suddenly double, what effect would that have on it's spin and it's orbit around the sun? (My answers ()) Would the length of a year change and how much? (Shorter)...
  18. A

    How we increase the pressure of a air compressor

    my question is that.. is there any way to increase the pressure from 25 psi to 125 psi...is the volume is 5.2m3/min...
  19. N

    Effects of OH- Increase on Alkalinity, Acidity, and pH

    An increase in the OH- in a solution would result in an increase in alkalinity (baseness). an increase in acidity. a pH of 7. a decrease in pH. i think it would be - an increase in alkalinity, but I am not sure help!
  20. T

    Will an increase of voltage also increase Amps?

    Homework Statement Will an increase of voltage also increase Amps? The Attempt at a Solution I always hear this water analogy where voltage is equivalent to pressure. If I picture a pipe with some water coming out the end, increasing pressure will result in more water coming out the...
  21. Fredrik

    How much does the uncertainty in position increase with time?

    I'm reading this article (the link is to the PDF file), and I got stuck on a detail right away. There's a clock at A and a mirror at B. We want to measure the distance L between A and B by measuring the time it takes a light signal to travel from A to B and back. The mass of the clock is m. Its...
  22. B

    What is the entropy increase per kilogram

    Homework Statement Suppose a power plant delivers energy at 9.7E2 MW using steam turbines. The steam goes into the turbines superheated at 665 K and deposits its unused heat in river water at 298 K. Assume that the turbine operates as an ideal Carnot engine. a. If the river flow rate is...
  23. F

    Schools How to increase chances of getting into the college I want?

    What are different ways I can increase the chance of getting into the college I want to go to? I'm in grade 11 right now.
  24. Mk

    Medical Increase Memory Chunks: 5+/-1 Tips

    Ok, so there were these things I was reading about. Mental chunks of memory. I also remember "five, plus or minus one." How can I work to directly increase the size of my chunks?
  25. T

    Understanding Percent Increase: 2184 is 9.2% Larger than 2000

    Homework Statement How much larger than 2000 is 2184 in percent? 2. The attempt at a solution I'm struggling with understanding what figure should be divided by the other. If I do 2000/2184*100 I get 91.6, obviously not the right answer. If I do 2184/2000*100 I get 109.2, leading me...
  26. V

    Does friction increase with rpm in an engine?

    me and my friend are having an argument about this. I say that because frictional force is less than or equal to the coefficient of friction times the normal force, and that neither the coefficient of friction nor the normal force can be increased while an engine is running(until it's oil is...
  27. A

    What's the fastest way to increase file size?

    So say, I'm writing a program with an infinite loop, and that I'm trying to write a file that is as large as the disk drive is, in the smallest possible time. What would be the best algorithm to do it? Clearly, such an algorithm would consume as many system resources as it possibly could. So...
  28. A

    Rate of increase of the surface area

    a spherical balloon is being inflated. find the rate of increase of the surface area (S=4 pie r squared) with respect to radius r when r is (A) 1 ft, (B) 2 ft, (C) 3ft. Here's what i did i found the derivative of s and i put 4 2R and then i plugged in the numbers in R and i got 8 ft...
  29. N

    What is the resulting increase in the speed of the flatcar?

    Homework Statement A man (weighing 915 N) stands on a long railroad flatcar (weighing 2805 N) as it rolls at 18.0 m/s in the positive direction of an x axis, with negligible friction. Then the man runs along the flatcar in the negative x direction at 40.00 m/s relative to the flatcar. What...
  30. Ivan Seeking

    News Saudis Increase Production: We've Got Them on the Run!

    The other day I saw a report indicating that the Saudis have now begun protecting their interests by increasing production, thus moderating the price of crude so as to keep alternative fuels out of reach. I don't recall exactly where I saw this, probably on PBS or a Sunday news show, but I did...
  31. J

    Total Force on 8.00m Wide Aquarium Wall Increase

    A large aquarium of height 5.00m is filled with fresh water to a depth of 2.00m. One wall of the aquarium consists of thick plastic of 8.00m wide. By how much does the total force on that wall increase if the aquarium is next filled to a depth of 4.00m.
  32. M

    Increase in energy in an electric field

    I was explaining the construction of Thomson's apparatus for determination of specific charge for an exam today and suddenly something popped up: Consider 2 oppositely charged plates held using insulated handles (They're not connected to a battery). If an electron moving with a velocity v...
  33. J

    Anybody else noticed the sudden increase in homework help questions?

    Anybody else noticed the sudden increase in homework help type question posted here. Anybody got any suggestions as to why?
  34. G

    Pressure Increase + Boiling: Does Temperature Rise?

    Here's the question: If the pressure of a substance is increased during a boiling process, will the temperature also increase or will it remain constant? It seems like it would increase because boiling is basically the release of pressure to create equilibrium. Is this right? Thanks a lot.
  35. S

    Drivetrain mass increase skews torque output?

    I have a car with a switchable transfercase that will allow me to choose between running FWD and AWD. I'll be putting the car on the dyno shortly, and I was just theorizing drivetrain output differences. Obviously HP numbers should drop roughly 15% because of the increase of mass on the...
  36. L

    Why does electrical resistance increase as tempreture increases.

    I have heard of people using liquid nitrogen to boost their processor speed quadruple. Why? My best guess is because the electrons start to move so fast it makes it harder for them to merge and transfer energy. This may be completely off, I know. :rolleyes:
  37. DaveC426913

    USB Port Speed: Is It Possible to Increase Without Replacing Hardware?

    Everytime I plug something into my laptop USB port it tells me "This device can perform faster". Is that something I can do without replacing any hardware?
  38. C

    Help Needed: Effect of Fuel Burn Increase on PV Diagram

    i'm looking for help to a question that i have, i have tried every thing to find an answer to it. the qustion is "how would would an increase in fuel burned affect the PV daigram of a given engine. i belief it has to do with changing of the pressure and volume figures on the PV diagram. if...
  39. E

    Increase power consumption with a capacitor

    Homework Statement A motor attached to a 120 V/60 Hz power line draws an 7.60 A current. Its average energy dissipation is 840 W. How much series capacitance needs to be added to increase the power factor to 1.0? (in micro F) Homework Equations Don't know which to use at all. The...
  40. D

    Work Needed to Increase Electron Speed

    Homework Statement How much work must be done to increase the speed of an electron from rest to 0.52c? Homework Equations I don't know :) The Attempt at a Solution I tried E=Ymc^2 where Y = 1/[1-(v/c)^2]^1/2 and got 3.19821x10^-22 J which translates to 1.998x10^-9 MeV, but I don't...
  41. J

    Increase efficiency of rotating shaft.

    Here I describe one mechanical engineering situation that is very useful in any kind of mechanical and energy consumed industries.I hope you will try to understand it and use it. If you find any difficulty to understand ,feel free to ask me. we can increase efficiency of rotating shaft...
  42. T

    Finding the Percentage Increase in y When x is Doubled

    oic. thanks a lot. y is directly proportional to x2 x is increased by 100% find the percentage increase in y. so, y= k x2 then y= k x2 y=k 4 x2 so 4 x2 is already increased by 100%? then to find k which is y=k 4 x2 k= y/ 4 x2 find the percentage increase in y, so what i...
  43. T

    Find the percentage increase in y

    y is directly proportional to x2. x is increased by 100%. Find the percentage increase in y. so, y=k x2 y= k (100 + x2) then i went to find the k, which is k= y/ (100 + x2) so i put back the k which i found into y= k (100 + x2) which is : y= y/(100 + x2) (100 + x2) them I...
  44. D

    Can spin result in an increase of velocity?

    If a spinning ball hits the floor is it possible for it to increase in velocity in the direction it is travelling? If so could you please explain with an example? And what Equations would you use? Thanx.
  45. S

    Temperature increase from amperage loss in wire

    Hello, I was wondering if anyone knew a calculation or method to determine the amount of current moving through a given material, knowing the resistance of the material, the specific heat and the temperature (while the material is actually being heated by current). Thanks, -scott
  46. K

    Can Wheels Increase Velocity When Separated From Vehicle?

    Is it possible for a wheels forward velocity to increase when separated from a moving vehicle? If so please describe what makes this possible?
  47. N

    Can Underwater Swimming Increase Your Intelligence?

    Well the author claims you can vastly increase your intelligence by simply swimming underwater for a couple of weeks. I want to know what you guys think, and if it would even be safe to try: http://www.geniusbydesign.com/other/windocs/guarante/guaran3.shtml My own opinion right now is a...
  48. S

    Economics - Find increase of cost

    Im not sure if anyone can help me with this, I haven't seen a question like this I am guessing its easy. I tried just taking the integral and evaluating, bu tthat gave me a wrong answer. Q:The marginal cost of producing x units of a certain product is 74+1.1x-0.002x^2+0.00004x^3. Find the...
  49. A

    How Does Increasing Mass Affect SHM Amplitude and Frequency?

    Hi everyone, I'm given a graph of the object's displacement and frequency and the object is executing SHM. The question asks what would the graph look like when the mass of the object is increased to lower the amplitude of the oscillation. Personally I think that the natural frequency...
  50. F

    How to determine the intervals of decrease or increase

    Im having a problem with curve sketching i can't figure out how to do this problem. I am confused. Heres the question 1. For the following curve find: a)the domain b)the intercepts c)the asymptotes d)intervals of increase or decrease: local maximum and minimum e)concavity and the...
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