Window Definition and 250 Threads

I am writing a program, and only care about one abstract method in window listener: windowClosing(windowEvent e){} Because of this, I would like to write a new interface windowSomthingCleverNameWise that extends window listener and does nothing with all of the methods except for windowClosing...

Hello all! I'm an electrical/controls engineer by day and farmer by night. I need some insight on an issue I'm having at the farm. We have a greenhouse where I've setup automatic temperature controls. A small PLC reads temperature in the greenhouse. If the temperature gets too high, we open...

I want to open a window in just c++. Now I can do this easily with SDL with just 2-3 lines of code, but I want to learn how to open a window in c++ without any library, I mean like plain c++ nothing else. I searched this on google but results yield nothing of my interest. There has to be a...

Hi all, I want to buy an air conditioning unit while they're cheap and I know you're not meant to have any windows open. I have strange windows so cannot use the fishnet attachment, long story short, if I hang the hose out of the window and just try to close the window as much as possible, will...

Hi, While studying opamps I came across comparator and window comparator. I had trouble understanding case of Vin > 2/3 Vcc. As per waveform, comparator 1 is functional and o/p goes negative. But isn't now Vin also more than 1/3 Vcc, so shouldn't comparator 2 make o/p positive. Also when Vin...

I have a glass block window in my shower. It's about 25 years old. Because it's in the shower the water directly hits it. Over time the sanded grout is starting to erode. It's not super bad, but it's to the point where I think I should patch it. The question is whether to fill in and cover with...

Homework Statement Sally makes a window frame which can be modeled by the composite function ##f\left(x\right)=\left[-8e^{\frac{x}{30}}+160\left\{0\le x\le a\right\},\ -8e^{\frac{-x}{30}}+160\left\{-a\le x<0\right\}\right]##, where ##a## is the x-intercept. A second composite function...

I used to have problem going to Digikey website with my old laptop until I change the DNS server. I just got a new laptop with Win7. It doesn't work again. I change the DNS server like my other computer, but it still does not work. Please advice. Thanks

Homework Statement A falling stone takes 0.28 s to travel past a window 2.2 m tall. From what height above the top of the window did the stone fall? So from this problem I think I have these variables: vo = ? (or 0 because falling usually indicates 0 for an initial velocity?) yo = 0 y = 2.2m...

Does anyone know how to work this out. Any help much appreciated. it is question 32 I'm stuck on

Hey everyone. Just a basic question out of curiosity. How effective are UV films for windows for blocking UV rays? Every window film I see says it blocks 99% of UV rays. I just put them in my house, and honestly, I find it hard to believe that it is blocking 99% of UV rays (that being rays from...

Hi All, I've been taking a bit of a crash course in astronomy for a raspberry pi project I'm toying with. I basically want to create a window to the night sky without the actual window but a screen to replace it. Barring the practicality (psh, who needs that) of doing this, it's been a lot of...

So I have a school project that requires me to use a sliding window in order to transmit a file to a server, but I'm having trouble understanding how sliding window works. I don't really understand how rejects are done and how the program knows to send a new packet and then move onto the next...

Homework Statement A ball is thrown 2.8m/s vertically upward from a window that is 3.6m above the ground. calculate the amount of time the ball spends in the air. Homework Equations quadratic equation d = Vi(t) + 1/2(a)(t)2 The Attempt at a Solution d = Vi(t) + 1/2(a)(t)2 3.6m =2.8...

If someone was to punch a double pane window from inside how far could the glass fly outside.. this window is 5ft off ground and I found glass as far as 15 ft away is this possible with a bare hand?

Homework Statement A triple glazed window consists of 3 clear glass panes of 3 mm thickness each, separated by air cavities of 12 mm each. The window area is 1.0 m2 . If the thermal conductivity of the glass panes is 0.8 W•m-1•K-1 and of the air cavities is 0.028 W•m-1•K-1 what is the total...

Homework Statement A window washer pulls herself upward using the bucket-pulley apparatus . The mass of the person plus the bucket is 68 kg . a)how much force must she push downward to raise herself at a constant speed? b)If she increases this force by 16 % , what will her acceleration be...

I'm frustrated with several of my PCs' performance. The issue may be with their Internet connections, or with other processing issues. Is there some software package that I can run to give me a GUI window showing Internet bandwidth, memory usage, etc, to help me debug the sometimes slow...

Homework Statement A ball weighing 0.2 lbs is dropped out the window of a pickup truck moving horizontally at 45 mph. If the C.O.R. (e) between the ball and the ground is equal to 0.6, find the height of the ball's first bounce and the horizontal distance it will travel before bouncing again...

Homework Statement A window washer pulls herself upward using the bucket-pulley apparatus shown in the figure. The mass of the person plus the bucket is 65 kg. a) How hard must she pull downward to raise herself slowly at constant speed? b) If she increases this force by 10%, what will her...

Homework Statement Draw the forces on a window The scenario is that I have 3 suction cups on the window to tale it down. And i don't know where the "normalforce" is. I forgot to draw the force of the suction cups Homework EquationsThe Attempt at a Solution

How can we detect whether a home window or door is opened or closed using sensors. I know it can be done using proximity sensors and window sensors. I want to know all possible ways/sensors to detect it. I am no way related to physics so please try to answer considering that :) Thanks in advance.

Hello, I would like to develop a testing method to detect window defroster grid failures. Rear windows has 12 heating wires painted to the glass and cca. 2% are faulty pieces. I tried to measure the resistance, current and voltage drop of good parts and compare results with those where was at...

Why is it that when a light is on in a room with a window made out of glass, and it being dark out side the window. That you cannot see through the window and instead see light being reflected form the room around you. And vice versa when it is darker inside the room and brighter out side you...

Ashtekar and Barrau have published a paper describing the possibility of testing LQC with observations. They talk about an observable window where it might be possible to distinguish between normal inflation and the LQC bounce. Can anyone explain how this works? he article is a bit too technical...

When you are driving and open the window, wind blows into it, but what causes the perpendicular direction of the air's motion to your direction of travel into the car? For instance, a bus. A bus is basically a rectangular prism with parallel window sets on either side, completely parallel to...

Homework Statement http://www.inter-ped.no/skei/MAT1013%20Matematikk%201T%20%20bokmal.pdf Page 10 task 4 for a picture. The window above consists of a rectangle and a semicircle. The windows perimeter is 8.0m. What does the radius in the semicircle have to be for the area of the window to be...

Homework Statement What is the focal length of a dewar window distorted by a pressure difference? As a result of the pressure difference, the radius of the first surface of the window is R1 = 100 meters. The window is 3 mm thick, with an index n = 4 at l = 4 um. Homework Equations I think I...

Homework Statement A Norman window consists of a blue semicircular section surmounting a clear rectangular section as shown. The blue semicircular glass let's through half the light (per unit area) as the rectangular section glass (it is half as transparent or twice opaque). Find the radius 'r'...

I'm pretty sure there have to be some theorems out there, but I am probably not putting in the right search terms to be able to find them. Here's the problem: I have a signal uniquely composed of a finite summation of standing wave sinusoids (well there's some DC and other background, but let's...

Hello, As a project I am making a wireless window blinds controller. It will be a motor turning the handle of the blinds. It may or may not use bluetooth and or wifi. It will be wireless through some means though. The device does not raise or lower the blinds.I measured a peak torque of 2 ft...

Hi everyone! Fresh and new around here. I just started learning C++ and wrote a program yesterday to list all primes up-to an input n. It works just fine except for one problem. I tried listing all the primes up-to 100,000. Program completed in about 20 seconds, I scrolled up to the top but the...

Hi. I have a Windows phone 8.1 phone. There are predefined folder in the phone such as documents, musics videos ... But they are parent folder and when I create new folders under them and put some documentations in them for easy classification I cannot find these folders and the material in...

Homework Statement A falling stone takes 0.33 s to travel past a window 2.2 m tall. From what height above the top of the window did the stone fall? Express your answer using two significant figures. Homework Equations Kinematic Equations ~ X= Vi (time) + .5gt^2 Vf^2 = Vi^2 + 2gxThe Attempt...

Hi, I am working on an n-body solver. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input...

Hi all, I'm new to the forums (in posting at least!). I recently graduated with a B.S. in Applied Physics, and have viewed topics here on and off throughout my educational experience. I definitely love this forum! I've been fortunate enough to have the opportunity to buy a new car, and recently...

Today I was taking the train to a nearby city, where we passed through some rainy region. As the raindrops fell on the window, one could see their trajectories almost followed a parabola depending on their initial conditions. That is something expected, due to gravity and the forces acted on...

Homework Statement if i have a box of: volume V1= 2 m3 pressure p1= 0.5 KPa temperature T1= 80° C with a window of A=0.2 m2 if i open the window what is the time for pressure box= pressure atmosphere? temperature atmosphere T2= 25°C pressure atmosphere P2=101kPa Homework...

A window is in the form of rectangle surmounted by a semi circle. The total perimeter of the window is 10m. Find the dimensions of the window to admit maximum light through the whole opening.

I'm struggling with this lately, I know that it depends on what you need to see, but is there a general rule of thumb?

I have wrote a program to resize buttons and such on my windows form. It doesn't seem to be doing much of anything. When I run the program it just shows me the form and it doesn't react to my resizing of it. namespace WindowsFormsApplication1 { public partial class Form1 : Form {...

Homework Statement Standing on the ground 3.0 m from the wall of a building, you want to throw a package from your 1.6 m shoulder level to someone in a second-floor window 4.1 m above the ground a)At what speed should you throw the package so it just barely reaches the window? b) At what...

Is anyone here any good with MATLAB? I could do with some help. I want to use the ellipticF function as shown http://www.mathworks.co.uk/help/symbolic/mupad_ref/ellipticf.html. I just want to put in a number and it return another number (the answer). I want it to work like the ellipke...

Homework Statement A double paned window consists of two glasses and a gap between them. The inner glass is d1 = 6mm thick, the gap is D = 16mm thick and the outer glass is d2=4mm thick. The inside temperature (by the inner glass) is T1=23°C and the outside temperature is T2=-10°C. What is the...

A car travels due east with a speed of 50.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 60.0° with the vertical. Find the velocity of the rain with respect to (a) the car and...

Hello, I don't seem to know how to ask google this question so I thought I'd see if I could get an answer from here. Say I have 400 measurements of some variable. I take a sliding window of 50 events and take the standard deviation of each set of 50 events. That would be 350 measurements. Now...

Homework Statement You are videotaping a birthday party in your dorm room; your dorm window in centered in the frame of your video camera. Suddenly, a rock passes by your dorm window! Assuming the rock was thrown horizontally, and assuming that the rock was traveling in a plane parallel to...

Does anyone have an indium or niobium mine handy? http://www.dailytech.com/Smart+Windows+Get+Smarter+Can+Now+Control+Light+and+Heat+Independently/article33180c.htm

1. A research submarine has a 20cm diameter window, 8cm thick. The manufacturer says the window can withstand forces up to 10^6N. What is the submarine's maximum safe depth? The pressure inside the submarine is maintained at 1atm. 2. Homework Equations P = P(atmosphere) + ρ*g*h 3. I...

Homework Statement Here's the question for my coursework. "Everyone knows the feeling of getting into a car that has been under the hot sun.Nobody likes it. Design an experiment and investigate the factor(s) that contribute to this condition." Here's my question, 1)Do window tint really helps...