Primarygun

I haven't learnt standing wave yet. Can you tell me what it is? a straight line resulted?

Do virus possess DNA? In my book, it didn't mention. In some other books, they just mention they possess RNA. http://en.wikipedia.org/wiki/Virus In this web site, DNA is supposed to be possessed by virus.

In the figure, describe the motion of particles X and Y at the instant. What will be the shape of the string after 1/4 cycle? I don't know which direction that the crests are travelling as there are two sources.

The tetrahedron BCDH is cut off from the cube and is then placed on top of the solid ABDEFGH as shown in the figure. The face BCD of the tetrahedron coincides with the face BAD of the solid ABDEFGH such that vertex H of the tetrahedron moves to the position of V and vertex C coincides with A. The faces BHD and BVD of the new solid lie on the same plane. What's the projection of point F on the plane BDH?

Ya, I am talking about this one. Is it possible for me to shake it faster without increasing the tension?

Ya. Is heat able to destroy cell membranes, causing oil being generated from the membrane?

If a number can be expressed in fraction, then it is a rational number. Can 0 be expressed into a fraction? You think about it.

Oil? Is it possible?

Yes. Some softwares provide this function. They provide a SIM CD DRIVER which is installed in your hard disk. Clone your CD into a image file then use this SIM CD Driver to open the file.

--- Hole ------ slit --------------Wave --------------Wave The situation as if this one represents.

Recent scientific report shows that the life of a rat is extended by a kind of medicine. If the new medicine uses on human, our lives can be extended by 30 years.

Why interference still occurs when a beam of red light passes through a hole created by the slits? The screen captures different brightness of red light. If there are no interferences took place, the brightness should be uniform.

If I want them to move faster, what should I do?

Will the protein eaten immediately be broken down to release energy if a man does not intake carbohyrates or fats?

Protein foods also supply energy to the body. If the person eats a lot of protein foods, the body uses the energy in the protein foods instead of using stored fat in the body. Is this statement correct? I'd think our bodies will use protein as source of energy only when we are in a state of starvation. Protein taken should be converted into amino acids first and then used to synthesize usable protein and excess are excreted.

Speed of gravity should be equivalent to the speed of a light ray in vacuum.

Why a change in frequency seldom affects the original wave speed of a wave? Besides depth of medium, what factors affect its speed? What happens to a transverse wave if we increase its frequency by flicking one end of the rope with a higher speed? Will the speed of the wave increase?

Yes. That's correct.

The Relativity which Einstein renowns for only consist of 3 pages?

I watched "the elegant of universe". It told me that speed of gravity is the same as the speed of light in vacuum. I think it was proved by Einstein.

I heard that an excess uptake of vitamin C would contain some severe cancers, is it true? How many citrus fruits should I eat a day?

Is it, Adding little CO2 into KOH---> Potassium carbonate+ water. Adding excess CO2 into KOH---> Potassium hydrogencarbonate ?

When I was young, I was keen to save energy, save water. Now, my brain is full of the warning stuff concerning on the earth, I do not persist my action. LOL

When I first noticed this title, I thought it should. However, the point you mentioned, " People will not conserve habitat with much effort if endangered animals are cloned.", this makes me need some more time to think about it.

In short, try to save energy, reduce waste of it, help rescue trees in forests so as to avoid a more serious global warming which will lead to a extinction of human beings. [Edit] I forgot something. Throw away your cooling machines, air conditioners. Stopping using aerosol to style our hair.