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. Amith2006

    Increase in frequency of tuning forks

    Sir, 1)When one of the prongs of a tuning fork is cut, why does its frequency increase? Is it because the damping forces exerted by the prongs on each other decreases? 2)When an incident wave and its reflected wave superimpose, it is said that both standing waves and progressive...
  2. C

    Calculating the Rate of Water Level Increase in a Trapezoid-Shaped Trough

    A water trough is 6 m long and has a cross-section in the shape of an isosceles trapezoid (dimension shown in the diagram.) Water is being pumped into the trough at a rate of 0.5 m^3/min. How fast is the water level rising when it is 0.5 m deep. AFAIK the volume of a trapazoid like this should...
  3. Amith2006

    What is the increase in area of the ring?

    Sir, The diameter of a metal ring is D and the coefficient of linear expansion is y. The temperature of the ring is increased by 1 degree Celsius. What is the increase in area of the ring? I solved it the following way: Coefficient of superficial expansion = 2y Initial area of the...
  4. G

    Flux through a surface increase or decrease

    A dipole lies on the X axis , with the positive charge q at x=d/2 and negative charge -q at x=-d/2 .i know that the electric flux through the surface in YZ plane (midway between the charges) will be zero .now this surface is rotated so that the normal to the surface is no longer parallel to the...
  5. T

    Why Did Plywood Surface Temperature Initially Lag in Heating Experiment?

    In an experiment I heated a room and logged the temp change as it went up. One of the walls in the room is made of plywood. I also logged the temp on this surface (on the heated side). When I looked at the graph after the experiment I noticed that as the air temp of the room went up, the surface...
  6. T

    Exploring the Mystery of Black Hole Entropy Increase

    Supposing I started off with a particle, which I know exactly the state it is in, hence, it is in a pure state. And hence also, its entropy is zero. Now, suppose we throw the particle into the black hole and be sucked in, then, then the area of the black hole increases and hence, the entropy of...
  7. J

    Calculating Related Rates of a Filling Spherical Balloon

    hey guys, just wondering if i did this correctly a spherical balloon is to be filled with water so that there is a constant increase in the rate of its surface area of 3cm2/sec . a) Find the rate of increase in the radius when the radius is 3cm. b) Find the volume when the volume is...
  8. N

    Current Increase When Connecting Capacitor to Resistor

    I have conducted an experiment in school I have some problem with it . I connect a resistor 6600 ohm to a 6V direct current and I read the miliammeter and it show about 0.9 mA . But after I connect a capacitor 3300 F parallel to the resistor , the miliammeter increase to more than 1 mA.Why the...
  9. E

    Wave Frequency Change: Why Does Velocity Not Increase?

    So in the case where the wave source is moving towards a stationary observer, the observer will observe a frequency f' where f'=f(v/(v-vs)) f= frequency of wave v=velocity of wave vs=velocity of source moving towards observer I understand that the increase in observed frequency is caused...
  10. T

    How much energy would neon gas absorb to increase the temperature

    i have 3 questions that i need help with Consider 180 g of neon gas. How much energy would it have to absorb to experience a temperature increase of 12 K? Construct a PV diagram for each of the following. (a) A gas begins with a volume of 14 L under pressure of 3 atm. The gas first...
  11. young physical

    Increase in mass & decrease in volume?

    hi everybody how are you?:smile: this is the first time i write here , i hope i be good frind for you , & I'm sorry about my language , but i think I'm not very bad:wink: :smile: . i have a quetion about the special theory of relativity? Einstein sied" when the speed is increase the...
  12. K

    Increase in speed, decrease in time

    Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next. When you increase your speed by 4.0 mi/h, the time to go one mile decreases by 9 s. What was your original speed in mi/h? (this is from chapter 1 in my physics book, but it's been a long...
  13. J

    How does one increase their free will?

    Assuming free will is the ability to choose and does exist. I had a dream that I was a machine, that everything I did was a response to a stimuli...kinda like that movie Awakenings where the patient aren't capable of initiating an action on their own but can only respond to external stimuli...
  14. M

    Why Does Mass Increase with Speed?

    OK, I'll admit...I am only a beginner, if even. I understand why time and length are effected by speed. But I've never understood why mass increases. Would someone kindly show me how and why mass increases the faster an object goes (using mathematical language understandable by someone who...
  15. benzun_1999

    Does a Black Hole's Event Horizon Increase with Mass?

    hi, i was just wondering as the mass of the black hole keeps increasing due to increased mass getting deposited on it does its event horizon increase because of this? does the black hole have infinite density? -Benzun
  16. Mk

    Ice core data shows 27% increase in CO2

    http://news.yahoo.com/s/ap/20051125/ap_on_sc/greenhouse_gas http://www.abc.net.au/science/news/stories/s1516607.htm http://www.newscientist.com/article.ns?id=dn8369&print=true
  17. P

    Solving a Problem with Relative Change: A 5% Increase in Radius

    Hello All I have this problem that I have no idea how to do. F = flux or the volume of blood to flow past a point R = radius F=kR^4 Show that the relative change in F is about four times the relative change in R. How will a 5% increase in radius affect the flow of Blood?? How...
  18. T

    What is the correct way to calculate percent increase in math problems?

    Can someone explain to me the following: If a number increases from 108,7 to 113,7 how much in percent has it increased? First I tried to do 108,7 / 113,7 = 0,956. 1 - 0,956 = 0,0439. In other words, an increase of 4,39%. This turns out to be wrong. 113,7 / 108,7 = 1,0459 -> an increase of...
  19. B

    Potential energy of the system increase or decrease?

    When two electrons move away from each other, does the potential energy of the system increase or decrease?
  20. I

    Increase Fuel Efficiency with BioPro Resonating Gas Technology

    www.mybiopro.com/savefuel ... can anyone tell me if you can actually increase fuel efficiency by resonating gas, and can someone maybe send me some links (if you know any) that explain how these things actually resonate the fuel without any external power source. AND if they don't have a power...
  21. J

    Velocity and acceleration increase

    Is it possible to have an INCREASING speed AND have the MAGNITUDE of acceleration decreasing? If so please give examples. I asked my TA this question today and she did not know the answer...? Help!
  22. J

    Thinking About Working Out: Can It Increase Muscle Mass?

    I *think* I remember hearing something about a study that showed just thinking about working out was able to increase muscle mass.. was this true?
  23. Lisa!

    Can You Boost Your Self Confidence?

    http://www.self-confidence.co.uk/self.html
  24. S

    Einstein's:Mass increase resulting from Acceleration increase

    I am looking for the ultimate reference to the notion by Einstein, that increase in Acceleration will result in increase in Mass? Any links or handwaving would be much appreiciated, as I intend to place a fundamental number of questions, in order to expand my knowledge on LQG, thanks.
  25. B

    Help Needed: Calculating Geometric Mean Increase from 1998-2001

    I don't know why I can't figure this one out tonight. I just can't think straight and I am hoping someone can help ASAP. Here is the question: In 1998 revenue from gambling was $651 million. In 2001 the revenue increased to $2.4 billion. What is the geometric mean annual increase for the period?
  26. G

    Has there really been an increase in brain size

    In the Earth's fossil record, some people say "yes" and some people say "no", not just in humans but mammals.
  27. D

    Energy increase as air pressure increases

    Doing a 7 th grade science project. Can a car run on compressed air? Ran a kids toy car using an 11 gal. air tank and 125 psi. how much farther would a car run with a 200 gal. tank and 4,000 psi. thanks.
  28. michael879

    Does increased velocity increase gravity?

    I know it increases mass, since KE = 1/2 mv^2 and as you approach the speed of light KE keeps going up meaning mass must go up. I've been told that this is simply an increase in relativistic mass (the e=mc^2 type) and gravity is based on rest mass. But isn't it kind of weird for everything...
  29. S

    Want to increase the Output current from soalr panel

    Hello everyone, I am trying to increase the output current of a solar cell by using two AA rechargeable batteries (1.2 volts/750mAh), any suggestions how may I need to connect them. I am a retired man and have a hobby of doing things. So please be patient. I would greatly appreciate any...
  30. S

    The Fall of the Portable Radio: How Long for a 10 dB Increase?

    A portable radio is sitting at the edge of a balcony 5.1m above the ground. The unit is emitting a sound uniformly in all directions. By accident, it falls from rest off the balcony and continues to play all the way down. A gardener is working in a flower bed directly below the falling unit...
  31. H

    RLC circuit and rate of increase of current

    Ok, I am having a problem with a RLC circuit and my teacher was unable to offer a satisfactory explanation. Hope that you'll help. Consider a DC battery, a switch, a resistor, a capacitor and an inductor in series. Before t=0 the switch is open and assume that the circuit has achieved steady...
  32. P

    Would adding more Gear in a series increase TORQUE?

    Hi, Would more Gearings aligned in a series on a rack mean more Torque? And also,... what gearing should I use on motor: ones that is a lot bigger than the ones on the series, or ones that are a lot smaller? which ones would generate more torque(power) rather than speed? Would the rack's...
  33. wasteofo2

    Why do citric acids increase your bodys alkalinity?

    I was reading through a physiology book and it stated that oranges and other citric fruits actually increase the alkalinity of your body, even though they're acidic themselves. Does anyone have an explanation for this? Thanks, Jacob
  34. C

    In an electrodynamic system, does the entropy of the field increase?

    Consider an electric field throughout the region of an electrodynamic system: E [x,y,z,t] The function, E [x,y,z,t], is a macrostate. Corrresponding to it are all the ways the charge in the system could be arranged ( p [x,y,z,t])so as to produce this macrostate. The set of p [x,y,z,t]s...
  35. N

    Solving the Volume Increase: Finding L with Two Speakers

    I got this wrong on a midterm, i have NO IDea absolutely how to solve this type of problem. I asked my TA too and he has no idea -An observer hears the 343 Hz sound produced by two speakers. One is 5m from him, the other is at a distance L the first and can be moved. Taking the speed of...
  36. T

    Beat Frequency: How Does it Change With Pure Tone Increase?

    if i play two pure tones together, i create a beat frequency. if i increase, any of the two pure tones, what happens to the beat frequency? heres my logic as to why the beat frequency can go either way: Fb = F1-F2, so if you increase F1 it increases and the opposite if you increase F2...
  37. J

    Solving a Gas Pressure Problem: Finding the Temperature Increase

    Not sure what formula to use to solve this problem A cylinder of gas at room temperature has a pressure of p1. To what temperature in degrees C would the termperature have to be increased for the pressure to be 1.5p1? Thank you all for your help
  38. I

    Does mass increase in SR mean higher gravity in GR?

    It has been years since I have thought of relativity, but I came across a book by Jerome Drexler in which he attempts to support his view that ultra high energy protons (cosmic rays) are what dark matter is all about in the galactic halos. In spite of the fact that it seems to me these protons...
  39. M

    Troubleshooting Air Volume Increase: -3.5°C to 37°C

    can someone please help me with this problem? After emptying her lungs, a person inhales 4.5 L of air at -3.5°C and holds her breath. How much does the volume of the air increase as it warms to her body temperature of 37°C? i used the equation \displaystyle{\frac{V}{T}} =...
  40. R

    Does Good Increase in the World? Examining Laws Impact

    Does "good" increase in the world or do the laws we make, make it appear that way? A schoolgirl hit me with this question today and I thought it was a unique way of looking at the world. What say yee? :confused:
  41. T

    How to increase the temperature of the ball mill in the lab?

    I want to grind the clinker with grinding aids such as CBA, HEA2. However, these grinding aids act only with clinker above 60 celcius degree. The temperature of the ball mill in our lab is 38 celcius degree. Please tell me how to increase the temperature of our mill in the lab up to 60 celcius...
  42. Y

    Steel bridge - increase dimensions by 5

    If you increase the dimensions of a bridge by 5, how much is its strength increases? How much is its weight increased? Any help is appreciated. Thanks
  43. J

    Why does passive force increase with increased muscle length?

    why does passive force increase with increased muscle length?
  44. V

    How do u increase the sensitivity of an IR sensor?

    how do u increase the sensitivity of an IR sensor? what are the options?
  45. L

    Why does the temperature decreases with increase in altitude

    1)what is entropy ? 2)why does the temperature decreases with increase in altitude
  46. C

    Can We Stack Solar Panels to Increase Solar Energy Absorption?

    Is it possible to have solar panels one over the other with little space between them to get 10 panel stacked structures to increase the amount of solar energy absorbed? There are four solar panels. Another 4 on top of them leaving some space between this four and the bottom four. In the...
  47. U

    Acceleration versus time graph - constant increase in acceleration

    On an acceleration vs time graph, how would an object move if there was a constant increase in acceleration? Is it possible to have an acceleration v time graph be curved? Also, I'm seeing a pattern in the relationship between velocity vs time and acceleration vs time. Correct me if I'm...
  48. R

    Loc Max, Min, increase & decrease

    Hello, I have a question about these things What is the local Max, local Min, when is the function increasing and decreasing! the function is: G(x)= x - 4 sqrt[x]
  49. E

    Can Everyone Increase Their IQ by 20 Points?

    Can everyone improve his IQ up to 20 points?
  50. wasteofo2

    Does a substances friction increase with increased heat?

    Assuming it stays a solid, if something gets colder, it seems, it's molecules become more tightly compressed and less able to drag on things and vice versa. Is that assumption correct?
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