Recent content by Aeonic333

Greetings Hey all, I'm a senior working on my B.S. in Biology with an interest in immunology and virology. Research includes neutrophil chemotaxis to synthetic analogues of a particularly antigenic tripeptide found in bacteria. I'm hoping to learn more about biology in general by answering and...

Translation 1) 7 tRNAs are needed. The first codon (AUG) is the start of the open reading frame, but encodes the amino acid Met. 2) 6 *different* tRNAs are needed because the codons ACU and ACG both encode the amino acid Thr. Each amino acid has its own tRNA synthesase, and subsequently its...

work Work is equal to (F)(d), so since the wall does not move the car does no work on the wall. If you consider Newton's Third Law (every action has an equal and opposite reaction) then the wall exerts a force back on the car. Depending on whether this is an elastic (like a ball bouncing off...

Time can be considered a dimension in the sense that we define a positional coordinate in our world based on latitude, longitude, and altitude. Well take that a step further and define that coordinate by latitude, longitude, altitude, and moment of existence in time. We observe the effects of...

dm is the change in mass, and dx is the change in length. Since a change in length results in a change in mass I set dQ/dm = dQ/dx

dQ/dx = dQ/dm dQ/dt [x=] dx Is it ok to assume that dx = dm ?

I think I got it... dQ/dt = k((Th-Tc)/x) Q = Hf*m dQ/dm = dQ/dx dm = dx dQ = [del]Hf*dx dQ/dt = [del]Hf*(dx/dt) dQ/dt = k((Th-Tc)/x) = [del]Hf(dx/dt) xdx = k(Th-Tc)dt/[del]Hf [inte]xdx = [inte]k(Th-Tc)dt/[del]Hf (x^2)/2 = k(Th-Tc)t/[del]Hf + C x = [squ]2k(Th-Tc)t/[del]Hf x is...

That makes sense. I was wondering whether or not that was possible. I just remember my Calculus book saying to treat it as a single expression... but if it is bounded by a constant like -g, or in this case, heat flow (which should be constant for a given thickness), then I should be able to...

I have been rather unfortunate to attend a school with a physics department that uses Sears and Zemansky's University Physics textbook. I have been working unsuccessfully on the following problem (Chapter 15, #103 for those who have the book) for 2 days... Show that the thickness of the ice...

If there is a pool with a depth of 10 ft and a lake with a depth of 10 ft, and the air temperature is below 0 degrees Celsius, which one will freeze first, and why? The lake will form a sheet of ice on top, but will the pool do the same? Can you solve for the thickness of the sheet of ice...

Some biological characteristics of lying are: 1) increase in body temperature 2) increase in sweat secretion 3) increase in pulse 4) pupil dilation Some behavioral effects of lying are: 1) looking down and to the left 2) covering part of the face with the hand 3) crossing the arms...

That is true. The ice must melt and the steam must condense, that is what Hf (heat of fusion) and Hv (heat of vaporization) stand for. I did make one mistake in my equation though: the heat of fusion needs to have a negative value since it is decreasing the overall energy of the system. So the...

My solution (179 g) to the problem below is slightly less than what the book says it should be (190 g)... A vessel whose walls are thermally insulated contains 2.40 kg of water and 0.450 kg of ice, all at a temperature of 0.0 degrees Celsius. The outlet of a tube leading from a boiler in...