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Engineering, Comp Sci, & Technology | Forum profile
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Forum profile page for Engineering, Comp Sci, & Technology on http://www.physicsforums.com.
This report page is the aggregated overview from a single forum: Engineering, Comp Sci, & Technology, located on the Message Board at http://www.physicsforums.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "Engineering, Comp Sci, & Technology" on the Message Board at http://www.physicsforums.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on Engineering, Comp Sci, & Technology:
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3 Months
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90
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Engineering, Comp Sci, & Technology Posting activity graph:
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Top authors during last week:
user's latest post:
angular strains
Published (2009-12-02 11:26:00)
in the following question, E=65 GPa V=0.3 Capture.JPG find the new length of the arc BD?? i have found the stresses xx=-56Mpa yy=0 xy=-28Mpa using hookes law i can find the strains xx=-8.615e-5 yy=2.58e-4 0.5* xy= =-1.12e-3 but how do i calculate the change in the arc using this? i would know how to solve this if i had some kind of angular strain- i need to use a polar system not Cartesian. is there any way to do this? also how do i know the...
user's latest post:
Mass Flow Rate
Published (2009-11-30 06:05:00)
how can this be done?
user's latest post:
Light Bulb Ballast (Please help)
Published (2009-12-02 18:08:00)
Originally Posted by ekociu The room temperature resistance of the tungsten filament in an ordinary incandescent light bulb is about 1/15th of the hot resistance exhibited during the normal operation at 117 VAC. Therefore, when you throw the switch to turn on the light bulb there is a huge surge of current in excess of the steady-state operating current until the filament heats up. This can cause the light bulb to "blow...
user's latest post:
Matlab Help Needed Meshgrid
Published (2009-12-01 19:07:00)
No, you misunderstand. The period is part of the operator, not part of the variable, and means that the operation is to be applied to each element of the vector.
user's latest post:
Will the LED be ON or OFF in...
Published (2009-11-29 23:31:00)
Originally Posted by cepheid That's plausible, but I don't know for sure, because the D flip flops I'm familiar with don't have those additional inputs: http://hyperphysics.phy-astr.gsu.edu...Dflipflop.html The only thing that I can tell you for sure is that pushing the button pulls the D input low which (after the next rising clock edge) causes the Q output to go low, which causes its complement to go high, which lights...
user's latest post:
Sketching a signal
Published (2009-11-30 13:21:00)
Ta Daa! He gets it!
user's latest post:
Fortran 90 assignment help
Published (2009-11-27 21:53:00)
Originally Posted by Mark44 You're still not being clear. Are the numbers in the millions and negative part of the data or are they the counts of the hot/cold spots? Assuming that you are talking about the counts, whenever you use a counting variable, you ALWAYS have to initialize it to 0. No, the data file itself consists of 120,000 data points the are numbers, most of which are in between 0 and 1000. The program is designed to find...
user's latest post:
Mass Flow Rate
Published (2009-11-29 06:36:00)
can be found from generic steam tables that list the properties of substances at different temperatures. is already given to you.
user's latest post:
Fullwave Rectifier
Published (2009-12-01 01:50:00)
Phrak, how did you work it out exactly please?
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Latest active threads on Engineering, Comp Sci, & Technology::
Started 4 days, 11 hours ago (2009-12-01 18:42:00)
by charan1
also the problem says I have to use meshgrid...I know there's a way to do this without doing that...
Started 3 days, 12 hours ago (2009-12-02 18:21:00)
by vk6kro
Originally Posted by yusra eng
hello everyone ....I'm new here and I have so many questions need to be answered ! so I will be really really really thankful if you help :)
what should be the out put voltage waveform shape on the ...
Started 3 days, 12 hours ago (2009-12-02 18:08:00)
by berkeman
Originally Posted by ekociu
The room temperature resistance of the tungsten filament in an ordinary incandescent light bulb is about 1/15th of the hot resistance exhibited during the normal operation at 117 VAC. Therefore, when you throw the ...
Started 3 days, 13 hours ago (2009-12-02 16:37:00)
by PhanthomJay
Originally Posted by ronaldor9
I dont understand what our teacher means by this:
" Analyze the correctness (or lack of it) of a common approximation made in structural
design, which is that the weight of the structure can often be ...
Started 3 days, 17 hours ago (2009-12-02 13:17:00)
by vishal007win
in such questions u don't have to differentiate with respect to force...do it with respect to displacement...n then by using relations replace it with the support reactions..
Started 1 week, 3 days ago (2009-11-25 13:39:00)
by vishal007win
first calculate M and V ...from there calculate U using formulae...
as in one using moment is...
U=integral(0 to L) (M^2/2*E*L) dl....
similarly go wid V..
den differentiate...to get final displacement...
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Hot threads for last week on Engineering, Comp Sci, & Technology::
Started 1 week, 1 day ago (2009-11-28 05:47:00)
by darkmagic
How can the problem be solved, the mass flow rate of the cooling water at the condenser?
Started 6 days, 13 hours ago (2009-11-29 17:04:00)
by LCKurtz
Take the 3, 5, and 8 terms in order. Start by drawing u(t-3). Then add u(t-5). You said you already can do that. Now just subtract 2u(t-8). You just add graphs by adding their ordinates.
Started 6 days, 7 hours ago (2009-11-29 22:41:00)
by cepheid
Hi physixchic,
What are those two inputs on the D flip flop that aren't D, Q, Q' or clk? They both have negated inputs.
Started 1 week, 4 days ago (2009-11-24 10:48:00)
by Mark44
I, J, I_MAX, J_MAX should be INTEGER, not REAL. Also, NUM_OF_HOTSPOTS and NUM_OF_COLDSPOTS have to be initialized to 0.
You need a DO loop nested within another DO loop to cycle through DATA_ARRAY, looking for hot spots.
Code:
DO I=1, 300
DO J=1, 400
IF ((DATA_ARRAY(I, J) .EQ. 0.0) .OR. (DATA_ARRAY(I, J) .GT. 1000.0)) THEN
IF (DATA_ARRAY(I, J) .EQ. 0.0) NUM_OF_...
Started 1 week, 1 day ago (2009-11-27 17:11:00)
by Redbelly98
Note: are you to assume the diodes have zero voltage across them, or would they have 0.6 to 0.7 V across them?
Once you answer that, the key here is: You know the peak voltage across the resistor. You know R for the resistor. Find I for the resistor.
Started 4 days, 11 hours ago (2009-12-01 18:42:00)
by charan1
also the problem says I have to use meshgrid...I know there's a way to do this without doing that...
Started 6 days, 20 hours ago (2009-11-29 09:58:00)
by Mapes
You're working with , an angular strain. When you integrate it, you get an increase in angle, not length. Know what I mean?
Started 4 days, 14 hours ago (2009-12-01 15:34:00)
by berkeman
Originally Posted by weedannycool
1. The problem statement, all variables and given/known data
Calculate the out put voltsge on the amplifier with a voltage supply of Vs 100 mV and Rs = 1k , R1=1k R2=10k. power comes from a +-15 v supply...
Started 6 days, 10 hours ago (2009-11-29 19:33:00)
by Astronuc
695.7MPa (~100 ksi) is about right for Al. That's pretty strong for Al.
69 GPa would be about right for the elastic ( Young's) modulus.
Started 1 week, 1 day ago (2009-11-27 17:22:00)
by The Electrician
Originally Posted by Maurizio
How can I write equivalent impedance for Z1.
I'd like to apply the formula:
G(s) = U(s)/Y(s) = -Z2/Z1
Keeping in mind that the minus input of the opamp ...
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