Which problem are u addressing :
1. 3 Reds and 3 Blues
2. 6 red and 3 blues
If the FIRST one then here is my question to u :
How can two red balls touch each other for it is given that the blue balls must be apart from each other . If any red ball was to touch another red ball, the two of...
Lets put our method to test, what if the number of red balls and blue balls were not equal .
There are 5 red balls (distinguishable) and 3 blue balls (distinguishable) , find the number of possible permutations in which all blue balls are not next to each other .
I would speculate :
for the...
Homework Statement
In how many ways can 3 red and 3 blue balls be arranged if no two balls of the same colour are next to each other ?
Homework Equations
....
The Attempt at a Solution
Here is what i did (Which is wrong)
6 x 3 x 2 x 2 x 1 x 1
I did this since there are 6...
It does indeed but that is something different. In this particular example we have :
Fe(II) ions , water molecules, extremely low number of Hydrogen ions and hydroxide ions, Sulphate ions .
Since the concentration of Hydrogen ions is almost negligible (as is the case in any aqueous...
Homework Statement
I am given a 1 M solution of Iron(II)sulphate(aq) and it is being electrolyzed using inert electrodes . What will form on the cathode ?
Homework Equations
Reduction potentials of : Fe =-0.44V
of water to from hydrogen : -0.83V
The Attempt at a Solution
Since...
It is a needle which is being moved by an automated sewing machine
I really can't see why do you need that information to answer the question :
Why isn't Energy conserved in this problem ?
In ANY case, the total energy at each and every point (displacement) during the SHM must be the same
Homework Statement
I doubt energy is conserved in SHM, or it might be possible that i be doing something wrong.
The particle (red dot) in the attachment is at its equilibrium position and oscillates with Simple Harmonic Motion between the two yellow colored plates.
Amplitude A = 1.5 m...
I cant see the logic in your answer .
I think that even if all three forces were passing through the Center of mass, there MIGHT still be a net torque !
Let me prove it : https://www.physicsforums.com/attachment.php?attachmentid=57701
Consider this diagram in which the three forces are...
This book was recommended as a great book for introductory physics by ppl here on PF
Physics for Scientists & Engineers by Serway.
As mentioned in the first post, there was this quiz on page 349~350 which asked whether the given object is in equilibrium, i stumbled across it while reading...
Here is a text from my Physics Book :
The net external torque on the object about any axis must be zero for it to be in rotational equilibrium.
I divide the torques into two categories, anticlockwise and clockwise. (This approach works fine for 2-D objects but will it work for 3-D objects...