Thanks a lot. I re-used the equation for resistance to find the new resistance of the hand. Then, after using V = IR, I managed to get the answer =D
Just to clarify, what does a potential of 50V means ? And does the potential changes along the length of the wire. i.e. the start and end point...
Current Electricity -- current flowing through hand
Homework Statement
i)For a layer dry skin 1mm thick, determine the resistance of a 1 cm^2 area of skin.
Resistivity of dry skin : 3 x 10^4 ohms m
[3.0 x 10^5 ohms ]
ii)A person, who is well-earthed, accidentally grabs a wire of...
Homework Statement
I got two forces acting on an object. I have the magnitude of the forces, 6 N and 2 N. Then I'm asked to find out what force is impossible to produce with these two forces.
Homework Equations
The Attempt at a Solution
I have no idea where to begin with. Maybe...
I am a bit confused too... As you have said, the solution contains 4 possible ions that recombine to form 4 possible salts. Since barium sulphate can be formed, why doesn't it precipitate from the reaction?
Homework Statement
The maximum size to which a cell may grow is limited by the cell's ?
Homework Equations
NIL
The Attempt at a Solution
It's a multiple-choice question... so i picked nucleus. My argument is that the nucleus controls the internal functions of the cell. However...
My knowledge of this subject is too weak that i needed to search online regarding your questions :( Beside, my level of education doesn't teach about equation to calculate force in a magnetic field... I stumbled upon this website and i think it solved my...
What is a screen ? :( Is it possible to have a 3-D representation drawn out ?
Regarding using right hand rule, the magnetic field lines point where? Current is which direction ? >>>> or <<<< ... I think since this is an electron... current is opposite direction of where electron is moving...
Homework Statement
It is a multiple choice question. The picture shows two bar magnet attracting each other. A charge is placed in the middle of the distance between the two magnets.
[S-Magnet-N] >>>> (-C) >>>> [S-Magnet-N]
>>> = direction of field lines. (-C) =negative
There is no...
I get it. So essentially modulus means there isthree possibilities : negative, positive and zero. For negative, the modulus will be multiplied (-1) to make it positive whereas positive will be left as it is. Zero means the meeting point ? <== is it alwaysthe same case for other kind of equations...
I'm abit confused. Isn't modulus is about making what is inside | | positive ? then y= a- |bx+c| should result in y = a - bx -c ? Why there is y = a + bx + c? Perhaps my understanding of modulus isn't that strong lol.. but my teacher told us modulus means regarding it is positive or negative...
My problem is not knowing the effects of modulus in parts of an equation ( in this case linear ) on the parts of the graph. An elaboration will be like y = |bx| + c , what's the effect on the graph compared to y = bx + c and likewise : y = bx + |c| and y = bx + c or even y = b|x| + c compared to...