Tuesday, February 18, 2020
America Out of Iraq Now Essay Example | Topics and Well Written Essays - 500 words
America Out of Iraq Now - Essay Example Some Americans still support the president, but most of us understand that Bush lied about his reasons for going to war, and that he wanted to invade Iraq and depose Hussein before he even took office. The Iraq invasion was a mistake from the very beginning, and now the cost of this war is more than we can bear. More than two thousand American troops have died in this unjustifiable war, which is bad enough, but between thirty-five and forty thousand Iraqi civilians are dead due to U.S.-led military activity in their country (Iraq Body Count). Reservists and National Guardsmen are being sent to Iraq because we are running out of regular military troops to send, but National Guardsmen are more useful to us at home. There should have been more National Guardsmen to help Americans through New Orleans during Hurricane Katrina. Instead, they were in Iraq. Our presence in Iraq is killing thousands of people and it is depriving Americans of their loved ones and the social support that military personnel stationed on American soil can provide to their country. We can't afford the body count, and we can't afford the financial price tag either.
Monday, February 3, 2020
Control and monitoring on smart grid Research Paper
Control and monitoring on smart grid - Research Paper Example Rp, parallel resistance, is a large value which has significant effect in capacitors which have small values. Rs, equivalent series resistance, albeit a small value, is vital in capacitors which have large values as their impedance is small when compared to Rs, and they dissipate high power. Ls, series inductance, is a representation of the total capacitance and inductance higher frequencies roll-off. At low frequencies, frequency and capacitance vary due to dielectric property changes. The same parasitic elements have an impact on the capacitorââ¬â¢s impedance when tested at different frequencies (National Instruments, 1). Capacitance is a capacitorââ¬â¢s ability of storing charge in an electric field. It is a measure of stored electric potential energy. A parallel plate capacitor common is a common device for energy storage device where capacitance and the conductorââ¬â¢s surface area are directly proportional. On the contrary, capacitance and the plateââ¬â¢s separation distance are inversely proportional. Using +q and âËâq as the charges on both conductor plates, and V as the voltage between the conductor plates, capacitance will be given by; The farad is the SI unit. One farad is one coulomb per volt. The energy, in joules, in a capacitor equals the amount of work done in charging it. Considering a capacitor with C capacitance, holding plate charges +q and âËâq. To Move a small charge element dq between the plates against V = q/C, the potential difference, will require dW , the work; A capacitorââ¬â¢s energy storage is calculated by integration of this equation. The initial uncharged capacitance is zero (q = 0). Moving a charge from a plate to the other until and attain a charge of +Q and âËâQ has to require the work W; Inductors are electronic components with the capability of storing energy as a current. Inductors consist of conductive coils wrapped around a magnetic material or without a core. The cores electrical properties show
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