What is Rate: Definition and 1000 Discussions

The Institute for Creation Research (ICR) is a Creationist apologetics institute in Dallas, Texas that specializes in media promotion of pseudoscientific creation science and interpretation of the Genesis creation narrative as a historical event. The ICR adopts the Bible as an inerrant and literal documentary of scientific and historical fact as well as religious and moral truths, and espouses a Young Earth creationist worldview. It rejects evolutionary biology, which it views as a corrupting moral and social influence and threat to religious belief. The ICR was formed by Henry M. Morris in 1972 following an organizational split with the Creation Science Research Center (CSRC).Its work in the field of creation science has been rejected by mainstream science, but has been significant in shaping creationist thought in the United States by introducing creation science through fundamentalist churches and religious schools, and by engaging in public debates against supporters of evolution. The ICR also offers unaccredited graduate level programs in Biblical Apologetics, including a minor in Creation Research. The ICR also operates the ICR Discovery Center for Science & Earth History museum in Dallas, Texas.

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  1. A

    Can temperature affect the mass of water

    Hi there guys, I'm conducting an experiment to calculate the mass flow rate of water. Bellow is a copy of the procedure: 1) Weigh the mass in kg of a container 2) Connect a flow meter to a tap (any source) with a pipe and insure the departure pipe goes into a sink 3) Open the tap an increase...
  2. daPope

    Have mass flow rate, want superficial vapour velocity

    Hi guys, quick simple question. Lets say I have a pipe separated into 3 sectoins (all horizontal), all have the same flow areas. In the first section it is all liquid water. I know the mass flow rate in this. In the second section the water is heated. And I can work out the steam quality...
  3. Amr Elsayed

    Doppler Effect & Time Dilation: Explained

    Hi, If I'm moving away from a light source flashing light, according to Doppler effect I would have more time between flashes from my perspective than a still observer from perspective of the source, my explanation would be that the source really waits this exact time, and I can relate it to a...
  4. R

    How can I determine spring rate of U-shaped clip?

    I'm redesigning a small, U-shaped spring clip, similar in shape to this: To make it fit, I had to increase the radii in the corners from the original design, so I need to validate that it will still have sufficient spring rate/clamp force for our application. I'm trying to figure out how I...
  5. A

    Calculating Radiator & Coolant Flow Rate

    if anyone can please tell me is there any specific method for calculating radiator size and coolant flow rate for an engine...
  6. G

    Rate of water cooling through copper pipe?

    So say I have a tank of water of about 2000mls which is at around 80 degrees celsius and is pumped around a copper system which is 3/8th inch thick pipe. how many meters would the water have to travel through copper pipe to return to ambient room temperature of about 20 degrees celsius. any help...
  7. J

    Why do things accelerate due to gravity at the same rate?

    If you use Newtons gravity equation; F=M1*M2/d^2. The force is dependent on the mass of two bodies so how could the mass cancel? Also, for example If I had a bowling ball and a ball the mass of the sun and droped them 100 feet above Earth The two balls would not accelerate at the same rate...
  8. U

    What is the expected rate of reactions in the detector?

    Homework Statement A reactor fires out ##10^{21}## neutrinos per second. A detector containing ##10m^3## of liquid which contains 30 carbon atoms every 60 hydrogen atoms. The detector-reactor distance is ##1000##. The cross section for the reaction is ##\sigma = 10^{-46} m^2##, and the density...
  9. G

    Time Rate at Earth's Center: Effects on Reactions?

    As we get closer to the Earth's center, clocks down there tick slower that ours in the surface. Does this have any noticeable effects? Just for example, could we notice that certain reactions such as radioactive decay happen 'too slow' down there compared to what we know as the normal rate in...
  10. Shafat Hasan

    Speed and / or expansion rate of the Universe?

    Is it true that the universe itself expands faster than c = 3 × 10^8 m/s at some places / areas / points. I have heard it but wasn't able to confirm. Because outside of the the universe, there ain't anything as far as we understand and hence the universe should not have to follow any law as...
  11. M

    Rate of heat transfer/temperature change

    Hello, I have another crazy project I'm working on and I need to know if this is viable before I spend a bunch of time and money. Here is the situation: I have a small block of Al. 1/4" x 1/4" x 1" long. Thru the length I drill a 1/16" hole. The surface will be whatever a standard drill bit...
  12. A

    Pressure: Rate or Distributed Force?

    My question is pressure a rate? Rate is defined as a some measure per another measure or quantity. Doesn't pressure fit that definition? yet everything I read says no...pressure is not a rate? Same with density Is it because pressure is really a distributed force per area, and it is not a value...
  13. Elvis 123456789

    How to calculate rate at which a carpet can absorb liquid?a

    Homework Statement I am trying to figure out how to calculate the rate at which a piece of carpet can absorb a liquid such as water or oil. This is for a real life project. I thought that maybe I could use related rates to solve for the rate of volume increase in the carpet if it was...
  14. S

    Calculating Initial Decay Rate of Ga-67 Isotope

    Homework Statement An initially pure 3.4 g sample of Ga-67, an isotope with a half life of 78 hr. What is its initial decay rate? Note: Molar Mass values given in tables for chemical elements are for natural mix isotopic ratios. (i.e. the relative percentages of each isotope normally present...
  15. Prashan Shan

    What will be the rate of fuel consumption of a rocket near 'c'

    when an object moves relative to something it experiences time at a slower rate right? now let's assume that an rocket moves 99.99% the speed of light, then what will be the rate of fuel consumption? will it remain the same or it will increase/decrease?
  16. P

    Exposure rate from thermal neutrons through water

    Homework Statement A beam of thermal neutrons (10^12 neutrons per cm^2 second) strikes a 1cm thick water target normal to its surface. The target is a round disk with diameter 20cm. Find the exposure rate (R/second) 100cm beyond the water target (the middle of the disk) from only the...
  17. D

    Why does lowering the slew rate lower the electrical noise?

    From my research I am showing that if an input signal becomes too slow (ie: a low slew rate) then the noise can cause multiple state changes. But I am being told that if the slew rate is low then it will get rid of unwanted noise. I read my results from this: (I lost the link but I did copy...
  18. quantumfunction

    Do humans increase Entropy at a faster rate?

    Do systems further away from equilibrium increase entropy faster than a system with a high level of entropy and does this increase push the universe towards thermal equilibrium faster. Is there anything stopping the universe from reaching thermal equilibrium?
  19. P

    How to obtain a kinetic model involving bioremediation rate

    good day all. I'm new in the area of bioremediation. Please is there any kinetic model relating bioremediation rate to temperature, depth, PH & Nutrient? if not, how can I model one? a simplified explanation,links & simple literature is also welcome. Many thanks
  20. F

    Rate of Lyman Alpha photons emitted....

    First off, I'm not sure if this question should go here or in the homework section. It is an astronomy homework question BUT there are only physics subtopics and did not want to post it in the wrong section. Let me know if it should be moved to there! Homework Statement Consider a nebula...
  21. S

    Calculate Mass Flow rate of cooling water through condenser?

    I have a condenser with a mass flow rate of 60kg/s, an initial point 1: P=50kPa, Quality = 95% and a final point 2: P = 50kPa that is saturated liquid. cooling water flows through the condenser with a mass flow rate of m(dot) and has a delta temperature of 15 degrees Celsius. how do i...
  22. C

    MHB Marginal rate of technical substitution for a production function

    Find the marginal rate of technical substitution for the following production function: Q=10(0.2L^{-0.5} +0.8K^{-0.5})^{-2} Here is my attempt so far: \frac{\delta Q}{\delta L}=[10(-2)][0.2K^{-0.5}+0.8L^{-0.5})^{(-2-1)}*[0.8*(-0.5)]L^{(\frac{-1}{2}-1)}=[(-20)*(-0.4)](0.2K^{-0.5}...
  23. F

    Increasing flow rate makes pressure drops larger

    hello In venturi meters, orifice plate meters and generally when there is a neck, constriction at a point in a pipe there is, at that point, a drop in pressure and an increase in velocity, so that the whole energy is preserved (theoretically) my question is, why if we increase the flow rate...
  24. C

    Wheels linked by belts: find the one with the least rate of rotation

    Homework Statement See Diagram Homework Equations See Diagram The Attempt at a Solution I have been looking for hours for the correct formula but do not know what to use or where to start. If you can point me in the direction of the right formula if one is needed, and I would be very...
  25. J

    Formulas for flow rate through orifice

    I am in need of a formula to calculate mass flow rate of liquids through a known orifice size and known pressure/secondary pressure. I need to do this for multiple liquids and I know the specific gravity for each liquid. can anyone help with this formula.
  26. S_Aghzafen

    Gravity's change rate and the Centrifugal force

    Hi everyone, this is my first thread i hope i do it right. I will get right into it by saying, how can i prove that : w=w0*(1±4πƒv/g) Where "w" is the weight of an object moving along the ecuador, v is it's velocity and g is the gravitational acceleration. I have...
  27. A

    When is the rate of change of momentum equals zero ?

    When is the rate of change of momentum equals zero ?
  28. B

    What if expansion rate of a universe is the speed of light?

    What If we accept starting point of the big bang as the central point and what If the equatorial expansion rate of a spinning universe was the speed of light, how would it impact universe? ( In this question, you may think yourself as an observer from out of universe. I try to mean with "the...
  29. moenste

    Mechanics -- Converting volumetric flow rate to nozzle velocity

    Homework Statement A hose with a nozzle 80 mm in diameter ejects a horizontal stream of water at a reate of 0.044 m3 s-1. With what velocity will the water leave the nozzle? What will be the force exerted on a vertical wall situated close to the nozzle and at right-angles to the stream of...
  30. mooncrater

    Consistency with the rate law.

    Homework Statement This is the question: Consider the reaction: $$2NO_2(g)+O_3 (g)\longrightarrow N_2O_5 (g)+O_2 (g) $$ The reaction of nitrogen dioxide and ozone is first order in ##NO_2(g)## and in ##O_3 (g)##. Which of these possible reaction mechanisms is consistent with the rate law...
  31. W

    Gamow peak and nuclear reaction rate

    It's known that the nuclear reaction rate (inside a Star) can be determined with $$R_{ab}=n_a n_b\left<\sigma v\right> \, \approx \, n_a n_b \Big(\frac{8}{\pi m_e}\Big)^{1/2} \frac{S(E_0)}{(k_BT)^{3/2}} \Delta \frac{\sqrt{\pi}}{2} e^{-3E_0/k_BT},$$ where ##k_B## is Boltzmann constant, ##T##...
  32. B

    High strain rate testing using the SHPB -- Help please

    I am a part C mechanical engineering student and require some advice for my individual project, which is based on the high strain-rate testing of a particular glass filled composite material using a split-Hopkinson pressure bar (SHPB) experiment. I gathered the results on a SHPB test rig and...
  33. Y

    MHB Calculating x with an Annuity and Annual Rate of 44%”

    A car is purchased by 12 million by paying 48 monthly fee due to x each quarterly fee due and 400 000 each for four years . If a rate of 44% effective annual, determine the value of x . Answer from textbook is $353 137.09 Ussualy, in problems I've seen, annuity is separated, but here is...
  34. S

    Heat Transfer - finding rate of heat transfer

    Homework Statement A 0.8m high and 1.5m wide double pane window consisting of two 3mm thick layers of glass(k=0.78W/mK) is separated by a 10mm wide stagnant air space(k=0.026 W/mK). The convection heat transfer coefficients on the inner and outer surfaces of the window are 10W/m^2K and 35W/m^2K...
  35. C

    Fluid dynamics, mass flow rate

    I've Attached the question and my answer to question 1 to task 3 and guidance if I've done it right? Or any guidance?
  36. F

    Can Higher Strain Rates Be Modeled from Existing Stress/Strain Curves?

    I want to create stress/strain curves for Higher Strain Rates from an available stress/strain curve? I am interested on the mathematical formulation aspect to generate a Dyna Material card.
  37. H

    Average shear rate of of particle sureface

    Homework Statement Diffusion coefficient (D) of 100 nm particles ( density = 1050 kg/m3) in a viscous solvent at 25 C is 2.2 x 10-13 m3/s What is the average shear rate at the particle surface? Homework Equations D = kT/ 6πηa (1) where k is Boltzman constant, T = temperature, ηsusp =...
  38. PWiz

    Does electronegativity affect rate of entropy increase?

    Let's say we have two samples of pure Helium-4, and two other samples of pure hydrogen fluoride (consisting of Hydrogen-1 and Fluorine-19) all in separate containers. One container of each chemical is at the same initial temperature of 200°C at a pressure of 101kPa, and the other ones are at...
  39. Z

    What is the total decay rate of N(1875) from the particle data group?

    From particle data group,(http://pdg.lbl.gov/2014/listings/contents_listings.html) I can see the decay branching ratios of N(1875),but the total width is not found.The "Breit Wigner width " are very different.So my question is ,How do they get the branching ratio without a certain total width?
  40. A

    Deriving a Rate Equation for a Reversible Elementary Mechanism

    Homework Statement Overall reaction: A + F = I + J (just take = as the equilibrium sign) It is first order in both A and B. The following mechanism has been proposed: 1. A + B = C + D 2. C + D = E + B (B is the catalyst) 3. E + F = G + H 4. G + H = I + J These are all...
  41. X

    Average Dose Rate of 1.11x108 Bq 131I in Thyroid

    Homework Statement A patient receives an injection of 1.11×108 Bq of 131I,30% of which goes to the thyroid, having a mass of 20 g.What is the average dose rate in the organ? Homework Equations D=1.60×10–10AE Gy s–1 The Attempt at a SolutionA=(1.11x108x(30/100))/20=1.665x106Bqg-1 E=0.192Mev...
  42. M

    Calculating Iceberg Melting Rate

    So I'm trying to model the process of towing an iceberg from Antarctica to elsewhere to use for fresh water. I hit a dead end trying to find how much of the iceberg would be left. I know it takes 333 J/g to melt ice and the mass of the iceberg is 7 million tons so i know how much energy it...
  43. X

    Average Dose Rate for 1.11x108 Bq of 131I Injection

    A patient receives an injection of 1.11×108 Bq of 131I,30% of which goes to the thyroid, having a mass of 20 g.What is the average dose rate in the organ? Solution: D=1.60×10–10AE Gy s–1 A=(1.11x108x(30/100))/20=1.665x106Bqg-1 E=0.192Mev =1.60x10-10 (1.665)(0.192Mev) = 51μGy s–1 This is...
  44. A

    Kinetics question: calculating rate constants

    Homework Statement I need help for this kinetics question: Chlorination of butene at 0 degrees c, liquid phase, dichloromethane as solvent. initial concentration of butene is 0.1M conversion of 47.71% achieved after 3.1 hours. an additional 0.5M of hot butene was added at this point, which...
  45. A

    I have a problem in solving laser rate equation, I

    Hi every one. I want to solve the Yb:YAG laser rate equations. I have three differential equation: http://8pic.ir/images/61nyu3ya2dw5i0xc9iis_thumb.jpg and the boundary conditions are: http://8pic.ir/images/wa8ss3kjesg0vllnv7ju_thumb.jpg the schematically figure of Yb:YAG crystal is...
  46. R

    Overall rate of reactions of decomposition of dimethyl ether

    Hi Guys, I'm solving this for almost a week, this is a part of our probset in chemical kinetics: The thermal decomposition of dimethyl ether: CH3OCH3 ---K1--> CH3' + OCH3' CH3' + CH3OCH3 ---K2--> CH4 + CH2OCH3' CH2OCH3' + --k3---> CH3' + HCHO CH3' + CH2OCH3' ---k4--> C2H5OCH3 using steady-state...
  47. TheExibo

    Representing the Rate of Production?

    Homework Statement Nitric oxide and oxygen gases react to form nitrogen dioxide gas in the reaction 2NO + O2 -> 2NO2 Write a mathematical expression to represent the rate of production of nitrogen dioxide: 4.0x10-3mol/(L*s) Homework Equations r=k[X]m[Y]n The Attempt at a Solution Not...
  48. binbagsss

    Weak decay, decay rate, colour-supressed and colour-allowed

    My textbook says: One of the decays occurs via a ## b \to c ## quark transition and is 'colour-allowed'.(Left of diagram). The other decay has a of ## b \to c ## and is 'colour-suppressed'.(Right of diagram) I'm unsure of what is meant by these terms, it doesn't really explain. I've...
  49. S

    Flow Rate, Velocity and Pressure relationship

    Hello everyone, I'm new to this forum and this is my first post so go easy! I have an engineering problem which I am uncertain as to how to solve. I am trying to design a basic ballast system for pumping seawater. The idea is to use compressed air to evacuate the water through a series of...
  50. TheExibo

    Rate Law Equation: Solving for m & k

    Homework Statement Concentration of Hydrochloric Acid (mol/L) 3 2 1.5 1 0.5 Reaction Rate (s/M) 1.333 13.30 38.67 73.00 1466 Homework Equations r=k[H+]m (r is rate in M/s, k is constant, [ ] is concentration, m is order of reaction) The Attempt at a Solution I'm not entirely...
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