Its from an example in the book, and it doesn't seem to make sense,
A rod of length l has a uniform positive charge per unit length (lambda) and a total charge Q. Calculate the electric field at a point P that is located along the long axis of the rod and a distance a from one end.
So...
When figuring the force between 2 points, no angle the result is calculated just by distance (and charge). But when there are 3 points, either 2 charges or more and a point or 3 charges, why is there an angle calculation?
ok I found out that the direction of the E-field must be vertically downward. This will generate an upward electrical force since the electron has a negative charge -e.
For the magnitude of the E field, solve
m g = e E
E = g m /e where g is the acceleration of gravity. now the...
Hi all,
Im doing a question in the homework, its #13 and I am struggling on how to get started.
The question is: what are the magnitude and direction of the electric field that will balance the weight of (a) an electron and (b) a proton?
There is an answer in the book, for the electron...
In all the examples there is no explanation just code segments.
There is the delegate constructor and somewhere a variable is dimmed to the newly defined delegate type, then a second variable is dimmed, and it somehow works.
The variables most examples use have long names, the instantiated...
You don't show the code for "servos" or "man positioning"
but in the last sub start_position you set Right_foot.value 2 times? you cannot set the variable more than ONE time!
Code runs a million billlion zillion lines per second, but a motor is very slow by comparison. One has 'value'...
See, this is what suprises me. Saddam has outdone Adolf Hitler in crimes against humanity, yet the "left" would give him the benefit of doubt... and reject the 15 member UN security councils resolution, and keep trying NOT to see any wmd violations against a monster who used wmd on civilians...
I was referring to Peter Chernin, News Corp president and COO who is a democrat. Roger Ailes? Hey we can all get to know what I personally think, its most likely inline with what Roger Ailes says.
OReilly calls himself an Independent, he tries to be middle of the road on everything, in fact...
Eisenhower would support president Bush today
A couple of problems with the argument here, its common knowledge the social security system will go broke because the baby boom generation is retiring. BB generation refers to the post world war 2 increase in family size; I recall in the 1990s...
unprovoked attack
Invading Iraq?
http://www.state.gov/p/nea/rls/15016.htm
13. Recalls, in that context, that the Council has repeatedly warned Iraq that it will face serious consequences as a result of its continued violations of its obligations;
This means the use of force, or to...
morals and morality
Wait, I haven't insinuated that yet. Many other Christians do. I would even go farther and say many Christians are involved in imposing a form of "Moralism" when there is no biblical mandate to. Christians are not called to impose high moral values, but are called to...
crossed the line
How did he cross the line in his beliefs? Is that from calling for a national day of prayer, supporting faith based groups or ?
Dismissed fact and endangered our nation, is that a claim about "ignoring intelligence on wmd"? and going to war illegally? You realize that...