Ok, I am an engine builder, building performance and race engines up to as much as possibly 5000 HP. I enjoy playing with cars, and have fitted my 1962 Chevy Corvair with EFI, Distributorless ignition, 4 wheel power disc brakes, etc. No one makes kits for any of this so I simply machined and...
Found this paper regarding performance of Tesla turbine. At the page 23, a formula regarding possible power output from a Tesla turbine is given. But, I want to know how to deduce the area given the formula. Tesla turbines are discs placed one after another with specific gaps in between the...
Lately it seems my Windows 10 computer been getting more and more sluggish. Checking on the task manager, it appears that the disk usage almost constantly stays at 100%, and that the System task is the biggest consumer. It is backing out applications I am using at the time. Is this normal...
Hi,
I need to clarify few points about the text quoted below. I'd appreciate it if you could help me with the queries.
Source: Computer Applications to Library By Kole Lambert, Page #169
Question 1:
It says, "For embedded systems, the highest performance levels are often not needed or...
Consider mixing ice water with the hot water and vice versa so that the two reservoirs are closer to the same temperature. What will happen to the mechanical/thermodynamic efficiency and ideal Carnot efficiency of a heat engine?
I am comic fan
There are several fiction character with electricity ability.
Like Sasuke and Kakashi from Naruto , and Killua Zoldyck from Hunter X Hunter, they use membrane concept of electricity to cover their bodies, which helps the electric nerve pulses to run at the electrical membrane...
I currently attend a very large state school which is one of the best physics schools in the state, and I'd say ~top 50 in the USA, and I am working towards an honors bachelors of science in physics. I am in my 5th semester, which at my university means E/M I, CM I, Math Methods II, as my core...
If I orient my refrigerator such that the condenser coils at the back are facing a glass door (least insulation in room, cold outdoors) will CP increase? CP=Qc/(Qh-Qc) so Qh-Qc will be smaller thus CP larger. Could this damage refrigerator?
I want to build a high performance computer optimized for FEA. If anyone has any suggestions or experience with this, please chime in.
I'm looking for suggestions on processors, RAM, video card, ALL of it!
I think I calculated part a correctly by extracting the cp (specific heat) of water from the table which is 4.188
Then calculated Q_dot by simply using the equation Q=m*c*deltaT=10.47kW
But I am stuck at part b, I know that the heat extracted from the water is the same as Q_L (rate of heat...
Hey! :giggle:
Some people assume that a specific car model does at least $\mu_0=120$ km with $1$ Lt benzin.
$10$ independent tests give the following results: $$104, \ 96, \ 80, \ 100, \ 108, \ 100, \ 112, \ 120, \ 130, \ 132$$
(a) Give the Null Hypothesis $H_0$ and the alternative...
USB 3 was heralded as the next best thing to sliced bread and, imo, has been marketed in a not - too - honest way. It's not always as useful as the bare numbers suggest. I know the same could be said about 1GB Ethernet but Ethernet can handle all sorts of rag tag and bobtail traffic streams and...
Is China allways first at PISA test because they have the most people in the world so statistically they must produce the most number of talent children?
Or they have the best education system?
Summary:: How to combine two formulas to find the material index
Attached is the problem I am having trouble understanding.
I have been able to do the first two combinations by transposing for A in the mass equation then subsituting into the stress equation. The next combinations (in red box)...
Ok, I was just wondering about physics in cars and it got me thinking about how cars are working with gravity. The only example I could think of was while going down hills. You guys know of any other ones?Also, I was thinking about friction in cars. You guys know any instances of rolling...
I am hoping that there might be some computer wizes or some gamers here that knows some stuff about computers to help me with a serious problem that I might having. Before I start off here are my system specs:AMD Althlon 2000+ XPNforce Asus UltraPNY Verto Geforce3 Ti 500512 DDR RamWindows XP...
Poll Question:Netscape 6 seems nice, but it is rather new, and new programs often have a plethora of bugs. I'm sure they will all be worked out in due time. Considering that, what do you think of Netscape 6?-MacCoderChoices: Netscape 6 was doomed from the start Netscape 6 is the result of a 5...
I have this upcoming physics project where I have use the physics behind the "Whip" ride (in which you sit in a car [one of many] that rotates around a pole, that rotates about an even bigger pole at the center of the ride) to determine which is the best seat in the ride (as most whip rides can...
Hi everyone.I'm new to the board & I would be grateful if someone could help me.I'm a keen athletics fan & am involved in a long-running debate on the IAAF forums (at IAAF.org) about Michael Johnson's 200m WR of 19.32 over 200m set in Atlanta in'96.Here is the problem:It is a widely held view...
Intel will not go for it until necessary!But, by third quarter, AMD will release AMD Athlon64, codename hammer, 64 bits processor for PC_____________________Patience yields stamina.
Does adrenaline make you perform better?-skaz-----------------------------------------------------Dragonball Z: "The Most Demented, but Amazing Anime of All Time"
I was wondering if anyone could explain to me simply how the torque plays a role in a car's performance. I understand how horspower plays the role, but i do not get what higher torque means in terms of performance.Also, I wanted to compare 2 cars with different horsepower and different weights...
Another athletics poser.You may be surprised to learn that athletics tracks are not identical,but vary greatly in their layout.I was discussing with some friends this matter & they came up with some interesting figures.We were discussing 200m races & they mentioned that the shortest curve is in...
I do not care about price. I care about quality and performance. Which one is better?-skaz-----------------------------------------------------Dragonball Z: "The Most Demented, but Amazing Anime of All Time"
Hello everyone,I am a student who is on a team that is entering a statewide contest. In this contest the goal is to build a vehicle around an 8 horsepower engine. The vehicle must travel 6.25 miles in 25 minutes. we must have a propulsal into the Indiana Mathematics, Science, and Engineering...
I know many people would think that this post belongs in General Discussion or Other Science, however mathematics was the basis of this event.I believe I am coming down with the flu. The symptoms were quite evident this morning. Since 2:00 AM, I have not been able to sleep. My body is feeling...
Black powder has specific impulse of around 80s, while rocket candy has up to 130s of specific impulse. Does that mean I could replace the propellant in a BP cartridge with 80/130 of the weight in rocket candy and obtain the same performance in an idealized gun? (as in without considering...
I thought that there was a standard placement for disc brake calipers on the front and back wheel assemblies for high-performance sports cars. I thought that I usually saw them placed at the back of the front wheels and the front of the rear wheels, but lately I've seen the opposite and other...
I've been learning about quantum computing for the last year and I can hardly believe what I read and hear. However, assuming that no big technical hurdles get in the way, I do think that the promises will become reality someday. It is becoming a bit clearer to me, but it's a very difficult...
Hello everyone,
Attached is the homework problem (FluidHmk.PNG) as well as the attempt (Attempted 1 and 2).
Just wanted to know if this is method to approach the problem
Thanks in advance.
Some jet engines have turboprop variants, and turboprops are rated in horsepower/watts just like piston engines. It's also possible for propeller engines to be mounted in puller and pusher configurations.
While it's not possible to directly compare different engine types, what would happen if...
I would like to know if there are any Physics Instructors or Professors who may believe that Queuing Theory as well as Relativity Theory may be relevant to CPE where communications platforms are moving at relativistic velocities with respect to (wrt) each other?
Homework Statement
I need to calculate the error of an average value (N for diffraction grating).
My results were 4 different average angles. With which I calculated their uncertainty using std.
Using equation (1), I found the number of lines per meter (N) with a known wavelength (λ) and the...
I haven't given much thought to the physics I studied in college a long while ago but found myself pondering some things recently and wanted to explore some thoughts... figured it might be a fun area to discuss and you might help point my brain back in a good direction...
I regularly...
Hello everyone!
I originally decided to be a physicist when I took an online course in Astronomy which talked about the greatest unsolved mysteries of the universe. After coming to university and conducting research in Particle Physics, I think I like it better and would pursue it instead...
I have a question for which I can't seem to find a satisfactory answer.
We do a lot of intense real time processing of audio signals in my line of work. (Generally programmed in C)
I am a mechanical engineer with only a rudimentary understanding of the process that goes on in the software for...
Homework Statement
Homework Equations
[/B][/B]
3. The Attempt at a Solution
Here's my solution attempt:
NOTE: Evolution 2 to 3 is really an isothermic process, but in the diagram shows as an politropic process.
4. Further Questions
But it isn't giving me logical values of COP...
How does the emission cross section of an emitting atom (such as Yb atoms in glass) affect the laser performance, namely the slope efficiency (signal power vs absorbed pump power) and laser threshold? Thanks a lot
Homework Statement
Your company needs to install a cold room which will maintain a temperature of -15 degrees operating in a room where the temperature is 20 degrees. A new member of staff has considered the specifications of two manufacturers and asked you to check their figures. Explain what...
Title pretty much summarizes it. I know I can use the binomial distribution to calculate the chance of equal to or fewer than a certain number correct on a yes/no task where there's a 0.5 probability of being right on any trial. But what if you have 27 Yes/No trials where Yes is the correct...
I am trying to model a real heat exchanger in simulink. I don't have the geometry data. But I have UA curve with me. If I have developed the model with UA curve, will it be dynamic in nature?
Hey! :o
A teacher wants to find out if the order of the exam tasks has an impact on the performance of the students. Therefore, he creates two versions ($ X $ and $ Y $) of an exam in which the exam tasks are arranged differently. The versions are randomly distributed so that $ n $ students...
Hello Physics Forums! After almost a year of haggling and research, I think I have successfully made a engine simulation spreadsheet! :oldbiggrin: I have simulated the Nissan KA24DE Engine with two different cam profiles:
As far as I'm concerned, there is still a lot of work to be done...
When drilling a thick peace of steel I noticed the drill bit would cut through much faster when it was cool. The difference was minutes versus seconds! Is this a known phenomena in machining or was my drill bit simply contaminated with something or maybe other factors played a role? I've heard...