Questions Asked

TomLikesPhysics:
Group Title
lim_{x rightarrow infty} (3x+sqrt{9x^2+4x5})
The answer is apparently 2/3. But I can´t loose the squareroot term at any place so I always…
 updated one year ago
 12 replies
 1 Medal

TomLikesPhysics:
Group Title
I can only find derivative for x>0 , but I don't know why (according to wolfram).
 updated one year ago
 26 replies
 2 Medals

TomLikesPhysics:
Group Title
I hear all the time that the universe is expanding. Those that mean that my meterstick becomes a little bit longer each day (or second)?
 updated 2 years ago
 9 replies
 2 Medals

TomLikesPhysics:
Group Title
I need help with a differential equation.
 updated 2 years ago
 6 replies
 1 Medal

TomLikesPhysics:
Group Title
I want to integrate 2sinx/[cosx]^3.
I wrote that as tanx/[cosx]^2 and saw that I now have to integrate f/f`. But somehow this does not help…
 updated 2 years ago
 7 replies
 2 Medals

TomLikesPhysics:
Group Title
I want to integrate 2sinx/[cosx]^3.
I split it up into tanx/[cosx]^2 and saw that I now have to integrate f/f`. But somehow this does not h…
 updated 2 years ago
 No Medals Yet

TomLikesPhysics:
Group Title
IF I think that Jesus is REALLY REALLY great and awesome why should I become a christian? Wouldn't it be more reasonable to become jewish th…
 updated 2 years ago
 18 replies
 2 Medals

TomLikesPhysics:
Group Title
In the first Super Mario game for NES you (as Mario) fight Bowser who is standing on some bridge. To defeat him you can jump over him and to…
 updated 2 years ago
 3 replies
 No Medals Yet

TomLikesPhysics:
Group Title
If I have a function: y=K*e^x is there a way to rewrite it as y=C*A^x where A does not equal e?
 updated 2 years ago
 35 replies
 3 Medals

TomLikesPhysics:
Group Title
In class we deduced the following:
E=mc^2 and for photons we know: E=hf
therefore m=hf/c^2 and if we plug that into p=mv we get p=hf/c^2 *…
 updated 2 years ago
 10 replies
 2 Medals

TomLikesPhysics:
Group Title
Let´s say I hold a pen in my hand. I can feel the material the pen is made of on my skin.
But is there really something touching or in con…
 updated 2 years ago
 6 replies
 8 Medals

TomLikesPhysics:
Group Title
I want to integrate ln(x/(x2a)) from 3a to 4a. I split it up into two integrals to integrate now [lnx  ln(x2a)] from 3a to 4a but somehow…
 updated 2 years ago
 6 replies
 2 Medals

TomLikesPhysics:
Group Title
I don´t know anything about Biology and would like to change that. Can anyone suggest some website where I can read the basic stuff or even …
 updated 2 years ago
 7 replies
 3 Medals

TomLikesPhysics:
Group Title
Why is it still possible to study philosophy at a university? It do not see any point in that ... thing. It seems like philosophy is science…
 updated 2 years ago
 11 replies
 3 Medals

TomLikesPhysics:
Group Title
Why are the planets that are further away from the sun mostly made up of some gas. One might think that they should be made up of some solid…
 updated 2 years ago
 3 replies
 4 Medals

TomLikesPhysics:
Group Title
Let´s say I stand on a gigantic ringshaped spaceship which is located somewhere in space where no other force affect it (like the ring thin…
 updated 2 years ago
 7 replies
 3 Medals

TomLikesPhysics:
Group Title
If they (scientists) accelerate some particle (e.g. a proton) in their accelerators they can get some high velocity like 0.999...*c. As I un…
 updated 2 years ago
 10 replies
 2 Medals

TomLikesPhysics:
Group Title
If I calculate the speed of an electron I know how fast it flies around. If I calculate it´s position I know where to find it. What informat…
 updated 2 years ago
 4 replies
 No Medals Yet

TomLikesPhysics:
Group Title
I heard and read often that if one look´s at the spectrum of (say) the sun  you see that some colors in the spectrum are missing like for e…
 updated 2 years ago
 13 replies
 1 Medal

TomLikesPhysics:
Group Title
If I want to integrate (sinx)^2 using the method of substitution than what are my function g and g`? x would be pointless because than I wou…
 updated 2 years ago
 8 replies
 2 Medals

TomLikesPhysics:
Group Title
If I compute the integral of (x^29)^1 dx than I get 1/6 * (ln \left x3 \right  ln \left x+3 \right) + C. If I compare my answer with…
 updated 2 years ago
 5 replies
 2 Medals

TomLikesPhysics:
Group Title
Which method can help me to do the integral of (x^2+1)/(1x^2)?
 updated 2 years ago
 20 replies
 4 Medals

TomLikesPhysics:
Group Title
What is my innerfunction g if I integrate x/(2x)^3 with the method of substitution?
 updated 2 years ago
 8 replies
 7 Medals

TomLikesPhysics:
Group Title
As a homework I am supposed to integrate sinxcosx using the integration method of substitution. I thought taking sinx as the innerfunction …
 updated 2 years ago
 7 replies
 3 Medals

TomLikesPhysics:
Group Title
Is it possible to do the integral of e^(3x)*cos(0.5x) from pi to pi with the method "integration by parts"?
 updated 2 years ago
 3 replies
 No Medals Yet

TomLikesPhysics:
Group Title
How does the deltasigmamodulation work? I do not know much about this communicationtechnologiestuff and can only find explanations for p…
 updated 2 years ago
 18 replies
 1 Medal

TomLikesPhysics:
Group Title
Why are microwaves called microwaves? What is so "micro" about them? The wavelength is in the cm  mm area so that can´t be it.
 updated 2 years ago
 4 replies
 1 Medal

TomLikesPhysics:
Group Title
If I have a function that is bent to the right from ]inf.;0[ and bend to the left from ]0;inf.[ but the second derivative is not defined at…
 updated 2 years ago
 2 replies
 No Medals Yet

TomLikesPhysics:
Group Title
How fast does Hubble´s constant change?
 updated 2 years ago
 1 reply
 No Medals Yet

TomLikesPhysics:
Group Title
Is it correct to say that the radialforce must be proportional to m without doing any kind of experiment because f=ma ?
 updated 2 years ago
 4 replies
 2 Medals
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