# 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 How to do Convergent-Close Coupling (CCC)

Is there an online source where I can learn how to calculate cross-sections and rates using CCC? More specifically, I want to calculate the dissociation rate of the molecular hydrogen ion due to electrons and ions, but I don't know how to do it numerically. Is there a resource available where I...
2. ### Related rates problem for the dimensions of a cylinder

TL;DR Summary: related rates problem The radius of a cylinder is increasing at a constant rate of 3 meters per minute. The volume remains a constant 1115 cubic meters. At the instant when the height of the cylinder is 44 meters, what is the rate of change of the height?
3. ### B Relative rate of clock ticks on the radius of a rotating disc

Currently reading Einstein's booklet on SR and GR. At this point SR has been explained but GR hasn't been introduced yet. The setup is like this: ##A## is present in an inertial reference frame and looking down on a flat rotating disc. ##B## is sitting on the edge of that disc, ##C## is sitting...
4. ### Benzyl Chloride Reactivity: Examining Stability & Rate

Although Ethyl chloride has more alpha hydrogens, cation formed by Benzyl chloride would show resonance and therefore show higher stability and faster rate, shouldn't that be more reactive?
5. ### Calculating flow rate when emptying liquid from a closed-top tank

I can imagine the experiment: the pressure at the surface will drop while the tank is emptying (if no air bubbles enter through the evacuation of course, otherwise it restores the pressure atm at the surface). The flow speed decreases as a function of time until the external pressure maintains a...
6. ### Chemistry Consumption rate of a reactant

Hello, I have a doubt in an exercise about rate of reaction. The statement is quoted above and the reaction scheme is the following: As the reaction is second order, I tried to apply the formula r = k*C^2. Where r = rate of reaction k = rate constant C = concentration So, I got: r =...
7. ### A What’s the meaning of decay rate in optical Bloch equations?

i have some questions about decay rate. 1：why do we need decay rate in these equations? 2：is it a constant for a specific medium? 3：it can be changed with respect to some conditions like temprature or pressure? 4：how can i know the decay rate of some energy levels in 85Rubidium
8. ### Rate of cooling of aluminum parts after a glycol heat process

I work for an aerospace supplier across different departments. I was recently shown how the production workers straighten aluminum parts after a glycol heat solutionizing process. The aluminum parts undergo a heat treatment for a few hours and are quenched in glycol. I can't get too in-depth...
9. ### Poiseuille equation for water flow rate

For this problem, The mains water pressure at the council tubby (just before it enters a house) is of the order of 1.5 bar. Using Poiseuille equation, estimate the flow rate in a typical home at the kitchen tap. You will need to make reasonable estimates on several parameters, clearly state...
10. ### Rate of loss of potential energy

I got answer for (a), which is 0.51 m For (b), loss of potential energy = 35 x 9.81 x 0.51 = 175 J Rate of loss of potential energy = 175 J / 1 s = 175 W But the answer key is 80 W. Where is my mistake? Thanks
11. ### A Solving "const. K" in Gourgoulhon's SR in General Frames

In sect. 2.3.2 "Ideal Clock", p. 33, of É. Gourgoulhon's text book on "Special Relativity in General Frames" $$\tau_C [ \, \text{tick}_{j}, \text{tick}_{(j + N)} \, ] = K_C \, N.$$ (equation (2.11); notation adapted.) The only other reference to this "constant K" is on the following page...
12. ### Does the gravitational rate of acceleration increase within a planet?

Example: The radius of the Earth is 6371 km. It has an average density of 5.5 g/cm3. Earth's inner core has the highest density at 12.9 g/cm3 [more than double the average]. Its surface gravity is measured in units of acceleration, which, in the SI system, are meters per second squared. It may...
13. ### How to calculate gating time from the rate of the random coincidence?

Hello everyone, I am now doing experiment related to quantum erasure. After plotting the correlation measurement with and without blocking one of the polarization from the SPDC source (say, V polarization), I do not know how to work further on the gating time from the rate of the random...
14. ### I The Effect of Wind on the Rate an Outside Spigot Freezes

Suppose one forgot to protect outside water spigots against below freezing winter air. If there is a stiff wind, will, as I think, the spigot freeze sooner than if the air is calm at the same temperature? Also, wouldn't the case of calm air actually be more complicated to model because the...
15. ### Calculating Output Pressure for 15L N2/min

Hello, i’m not good in physics so I came here for help. I have a high pressured gas tank (200 bars) and a flow rate regulator. I need to release 15L of nitrogen per minute, but my regulator only measures output pressure between 0 and 400 bars (0 - 6000 psi). How do I measure the output pressure...

44. ### How do we calculate the desorption rate in this case?

Solution attempt: The teacher told us to use the equation 2Ddt to calculate that average distance. (D: diffusion coefficient that will be calculated by the Arrhenius formula, d: dimentionality of the system, and t: is the time before the desorption of the molecule) The thing is, the time t...
45. ### Relation between enthelpy of sublimation and rate of sublimation?

Hello, I am running experiments where materials are heated at high temperatures during tens of hours under high-vacuum conditions. Since what I am investigating lies in the first hundreds of nanometers of the materials, I must take into account (and anticipate) surface sublimation. Therefore I...
46. ### I Limits confusion -- What is meant by "instantaneous rate of change"?

Suppose a particle is falling under the pull of gravity, the distance it has fallen is given by s=16t^2.Suppose we wish to find the instantaneous speed at t=1. Find the average speed between t=1 and t=1+h where h is any real number except 0. Distance traveled/Time it takes to travel the distance...
47. ### B Clock Ticking in Gravitational Well: Observation Rate

I was wondering what someone standing far away from a planet with mass would see if he drops a clock towards the mass. And then vice versa if I was standing on the planet, what would I see. would I see the clock tick fast and then slow as it approaches? Thanks!
48. ### Looking to create a temperature rate of rise table for air

How did you find PF?: Google l was asked how hot would our IT space get if we lost all air conditioning. The space is 20' x 15' x 10', We keep set point at 70 F and have 80 kW of load. Assuming this exists in a well insulate container with 20 racks of equipment. Doesn't have to be perfect but...
49. ### Theoretical reaction rate for water electrolysis

So I'm designing a proces where carbondioxide is converted into methane using the Sabatier reaction. For this reaction hydrogen is required which I'm planning on producing using the electrolysis of water. But I'm having a problem where I need the speed of this reaction to determine the size of...
50. ### Coolant Mass Flow Rate Through Subchannel in Nuclear Fuel Assembly

I am trying to find the mass flow rate of coolant through a channel within a hexagonal nuclear fuel assembly. I am given the specific heat of the fluid, the coolant inlet and outlet temperatures, the total power produced by a single fuel pin, the diameter of the fuel pin, the length of the fuel...