Phudges+Phun+Physics+Page

 James - pretty good start to your wiki page, but you have a lot of work to do for you homework. I would like it to be in your own words and from a variety of resources. Well done on your notes from today - I think you and Sparky coudl be good friends. More to do here thoguh also 1219803561

__ Measure of Charge  __ 1 Coulomb= 6.242x10^18 elementary charges 1 Elementary charge= 1.602x10^-19 Coulombs __ Coulomb’s Law  __ __F-Force, k-the proportionality constant (equal to 9x10^9 measured in nm^2 C^-2)__  __R- distance between the two charges, q1/q2the charge in Coulombs__ F=  __   kq1q2 __     R2        __E is the strength of the field (N/C), F is the force (Newton’s N), Q= the amount of charge (c)__ E= F/Q __where: I = the current (Amps) q = the amount of charge in coulombs (c) t = time in seconds (s)__ I=Q/T __Resistance is R mesure in Ohms, V is Voltage, I is current mesured in Amperes__ R=V/I __E is the electraical energy mesured in Joules, q is the charge, V is the potential difference__ E=QV __P is power mesure in watts, V is Volatage, I is Current__ P=VI

HOMWORK 25th AUGUST How does a stun gun work? The batteries (usually AA) supply electricity to a circuit. The circuitry includes multiple transformers, components that boost the voltage in the circuit, typically to between 20,000 and 150,000 volts, and reduce the amps. It also includes a oscillator, which to produce a specific pulse pattern of electricity. This current charges a capictor. The capacitor builds up a charge, and releases it to the electrodes, the "business end" of the circuit. The electrodes are simply two plates of conducting metal positioned in the circuit with a gap between them. Since the electrodes are positioned along the circuit, they have a high voltage difference between them. If you fill this gap with a conductor (say, the attacker's body), the electrical pulses will try to move from one electrode the other, dumping electricity into the attacker's nervous system.



How Do You Survive/Avoid Being Struck By Lightning?

- Don't stand underneath trees during thunderstorms - Don't be touching metal during thunderstorms - Don't go swimming during thunderstorms - Don't use telephones / computers / other electrical appliances during thunderstorms

This is really kool you should have a look

you spelt cool wrong. minus 2 stars. you now have only three stars. 1221007943 I'm too lazy to open the file, but I'll loan you 3 stars (remember there's interest!) 1221008142 Good use of pictures, low clutter .. star, star, star, star, st --1221008219 the pictures look really good--1221008244


 * Why is a sweaty body electrically more dangerous that a dry body? because there is water on the body and water contacts electricity
 * Why do some trees explode when struck by lightening?
 * What is the difference between AC and DC current? Ac- Alternating currents, dc- Direct Current
 * Power lines are operated at high voltages and low currents. Why? P=VI and because current is more dangerous we
 * They are trying to develop an electronic means of contraception. Explain how this could work. 1221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127122144012712214401271221440127~