thanks for pointing that out, i have drawn a picture of the wire and i can see now that the current is clockwise, so i think that the current in the other wise also needs to be into the page otehrwise they will cancel,
the next part of the question is -
Consider a general point on the...
wire 1 has a current of 1A directed into the page, wire 2 is 20 cm to the right of wire 1 with a current of 1A, what direction does this current have to flow in order for the magnetic field strength at the mid point between them to be non zero ?
from the right hand rule the mag field from...
why does that matter - I'm 14 ?
so i make mistakes isn't that why i asked for help, if i knew the answer i wouldn't be here would i ?
thanks for the help (and making me feel bad) anyway
ok i follow that, sorry for all the mistakes but i am only learning !
Now I need to get i1 so if I use E2
20i1 – 9 – (5*-0.2) = 0
20i1 – 9 – 1
20i1 – 10 = 0
Add 10
20i1 = 10
Divide by 20
So i1 = 0.5A
And therefore i3 = i1 + i2
0.5A + -0.2A = 0.3A
i have checked...
The left hand loop is clockwise running EFAB
the right hand loop is counterclockwise running DABC
ok if i use the above equation then i get stuck trying to find a value for i1
4)-10i1 + 1 - 15i2 = 0
equation 2 - 4
20i1-9 - 5i2 = 0
-10i1 + 1 - 15i2=0
10i1 + 10 -20i2 = 0...
Calculate the current in each of the resistors and indictate the direction
of current flow.
what is the potential difference between A & B
I have attached the circuit & labelled the the circuit directions
using kirchhoffs laws -
1) i3 = i1+i2
FOR THE LOOP AFEBCD
2)...
ok so
charge on a proton = 1.602x10^-19 C
charge on a neutron = 0
so total charge on the zinc is
30 x 1.602x20^-19 C = 4.806x10^-19
for the alpha particle
2 x 1.602x10^-19 C = 3.2x10^-19 C
now i need an equation for distance, this equation looks the closest ?
Eel =...
An alpha particle (made of 2 protons and 2 neutrons) with initial kinetic energy of 1.20 × 10^-12 J travels directly towards the nucleus of the stationary zinc atom The nucleus of a zinc atom contains 30 protons and 35 neutrons, and has a diameter of 4.00 × 10^-13 cm.
The alpha particle slows...
Ok thanks for that, So i have mass of one atom = 20amu so this is m.
how do i work out the number of moles or the mass of a mole of particles ?
sorry for all the Q's but i never really did any chemistry so never learned any of this before now
ok thanks for the hint so most probable speed equation is -
Vmp = SQRT (2kT/m)
k = boltsman constant 1.38x10^-23
but i saw this as an alternative form of the equation which was Vmp = SQRT (2RT/M)
where R = molar gas constant
how do i know which i use as both are in the book ?
I have read that chapter and this is what I think I should be doing?
E = 1/2mv^2 / 2
So if I use this equation putting in the figures for mass of the neon atom (20amu) into m and maximum distribution speed 500ms into v1 this will give me E, I guess I would convert the units for mass as...
Ok i assume that helps for the second part of the question, but how do i use that before i know the temperature ?
if anyone can give me a hint i would really appreciate it, i keep going thru my book but i can't find anything to help - I am sure its there i just need some advise
A power station is supplied with water from a reservoir. A pipeline connects the reservoir to the turbine hall
The flow of water through the pipeline is controlled by a valve which is located exactly 500 metres below the surface of the water in the reservoir. The pipeline is 0.30 m in...