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3

Replace "magnetically charged" by "magically charged" - I would rather agree to that :) (and that's actually how I read it by mistake! ;)) Writing of magnetic charges (=monopoles) actually doesn't increase the plausibility. I think it's just a hoax (I mean, that the university is involved, not the whole business) - though this word would be not ...

1

At the equator the effect on the local value of $g$ due to the rotation of the Earth and the non-spherical shape is only a few parts in a thousand. So even planting a tree at the top of a high mountain at the Equator probably will not have much of an effect on its ultimate height. I found this Scientific American article interesting although it did not ...

1

International Agency for Research on Cancer groups cell phone in group 2B, which is for possibly carcinogenic to humans. Not even probably. So, it is not that harmful . But, you can protect your by Electromagnetic shielding. You can figure out a way to connect conductive or magnetic materials either to your or the phone, but if you connect it to your ...

2

No they cannot. Any living system is an incredibly complicated, interacting quantum system. The countionous interaction (noise, heat bath, etc.) between particles makes it impossible for a coherent state to exist. However this is only true for the whole organism, on the level of single proteins, or other biomolecules quantum coherence may play an important ...

0

background radiation is very dependent on where you live it's different depending on altitude rocks around where you live ect. but generally comes to around 0.1 - 2 micro sieverts per hour the "ionizing radiation regulations 1999" states: Anyone under 18 should not be exposed to more than 6 milli sieverts per year above background radiation ~ 1 micro ...

1

It may well be that the cross-membrane voltage difference is largely homogeneous, but not because intracellular protons are very mobile. To the contrary, the cytosol mobility (rate of diffusion) of protons, and ions in general, is very different from the high mobility measured in water or dilute solutions of small molecular species. According to this ...

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When you do a sit-up on a hard floor, your abdominal muscles are doing all the work to bring your upper body to a certain height above the floor. On a springy surface, as you start to sit up, the weight of your body becomes concentrated on the part of the floor beneath your hips, causing it to sink. This gives two advantages: The final height of your upper ...

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There are obviously many biological factors contributing to this, but from a physics point of view one could talk about degrees of freedom: since a foamy floor has more of them it is easier for yourself to get in the optimal position to get up. I would also like to add a simple biological factor: it hurts more to move around when you are trying to get up on ...

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It would still be here, it would just be turned inside out.

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1) What can be say about the work done by the man to the weight? Unlike gravity, the force exerted by the man is in general not constant, does not depend only on position of the body (you may apply different force on the weight at the same height $h$ on the way up vs. on the way down), and is not conservative (does not arise from a potential). When the ...

4

1&2) Let's suppose there are only two forces in play: the one exerted by the man, and weight. The sum of works done on the body equals the variation of kinetic energy (this is a theorem of mechanics; I fail to find its English name). Since the body has no velocity at the start and at the end, the sum of works is zero. The net work done by the man on ...

1

The correct statement is - the total work done on the weight is zero i.e. the total energy of the weight before and after the experiment is same. However, when the man is lifting the weight he is obviously working against gravity. More importantly, when he is lowering the weight, he is still working against gravity, as gravity would rather lower the weight ...

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VSD's work because a portion of the VSD molecule contains a chromophore, that is, a molecular structure that is responsible for absorbing light at one or more particular wavelengths. Absorption of light is entirely a function of the electronic structure of the chromophore. That is, light at a particular wavelength is absorbed by the molecule because the ...

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