Hi I tried the problem again and I hope someone could please check over my work. Thank You!
The equation for a standing wave: \displaystyle y(x,t)=[2y_m\sin(kx)]\cos(\omega t)
Since \frac{1}{2}\lambda=L\Leftrightarrow \lambda =2L
Thus, k=\frac{2\pi}{\lambda}=\frac{2\pi}{2 L}=\frac{\pi}{L}...
Hi jtbell! Thank you very much for replying to my question. I read up some more information regarding standing waves from a few resource sites. Particularly I learned a lot more about their properties from here:
http://hyperphysics.phy-astr.gsu.edu/hbase/waves/standw.html and...
Hi there, I'm trying to teach myself some concepts involving waves. I tried a problem from an old physics exercise book, but I am having difficulty in getting the correct answer. I was wondering if someone can please point me into the right direction or show me a link where I can read more...
Hi Hootenanny, thank you for the reference! I think I got it now.
Let x be the distance of \overline{AB}
Calculate the intensities:
\displaystyle 50.0dB=10\log\left (\frac{I_1}{10^{-12}}\right )
\displaystyle\Leftrightarrow 10^5=\frac{I_1}{10^-12}
\displaystyle\Leftrightarrow 10^{-7}=I_1...
This question is from an old physics exercise book which does not have any examples. I have tried solving it by reading up the concepts on waves and sound from a conceptual physics book. I'm hoping if someone here can show me how to solve this problem, so I can see and understand how a...
Hi I have a question here from a chapter on sound. I'm not sure on how to solve this, so I was wondering if someone here could please give me a hand. Thank You!
Question: A point source at A emits sound uniformly in all directions. At point B, the listener measures the sound intensity to...
Hi I've been doing more problems involving rotational motion. This question involves moments of inertia and torque which I'm not sure on how to solve. If anyone could help, that would be great. Thanks!
Question: The uniform 4.0 kg thin plate is made to rotate about a vertical axis that is...
Hi, thank you for the help OlderDan.
Then I suppose for part d), once I've found the frictional force on the yo-yo, I can use the relationship, F_f=\mu F_N, where F_N=F_g (the total weight of the yo-yo)?
Hi thanks OlderDan for replying. I made a rough diagram too. I hope this helps.
Diagram
* *
* *
* *
O_________ F_T
* *
* *
F_f______*____*___________
SURFACE
The outer circle formed by asterisks...
Hi thanks guys for replying to my question! I'm going to give it another try.
How bout first solving for the moment of inertial of the yo-yo:
Let the small cylinder be m_1=0.05kg and each of the big cylinders be m_2=0.25kg. Also, let the radius of the small cylinder be r=0.008m and the...
Hi, I read a whole chapter in the textbook on rotation and angular motion. Then I tried to apply those concepts by solving problems, but I can't seem to solve the part B questions. The part A ones which were primarily subbing into the formula, I could solve, but these I am having a lot of...
I have read the trend and I think the answer should be Cl-, H-, F-, Li+, Be2+.
However, I am not sure about this, because of the hydride. I heard that there is some controversy as what is the actual ionic radius. I just wanted to see if anyone here came up with the same order.
However...
Hi I have a question involving periodic trends. This time the trend is on ionic radius. I'm not sure I got this right so I was wondering if anyone here may please offer their advice. Thank you!
Question:
Order each of the following ions according to largest to smallest.
A. Cl^-
B...