observation tests
I did a test and although I didn't believe that observations were difficult, after I took the test, my opinion changed.In the video I was asked to watch people passing a ball, but in doing so I didn't notice a moonwalking bear in the background.
Your BIS2A instructors have devised something that we call “The Design Challenge” to help us approach the topics we cover in the course from a problem solving and/or design perspective. This pedagogical tool is nothing more than
Never heard of the design challenge, but it reminds me a lot of the process I got through when doing math problems, particularly word problems.
The cyanobacteria, also known as blue-green algae, evolved from simpler phototrophs one billion years later. Cyanobacteria, still with us today, are able to acquire energy from sunlight and water, producing O2 as a waste product of photosynthesis.
It's interesting to see how such a small organism can help contribute to the major start of evolution. For example, with the Cyanobacteria it was the one that released O2 into the air, thus helping other organism live.
So we can reasonably postulate that some of the energy in the fuel went (directly or indirectly) into heating the car, parts of the road, the exhaust and thus the environment around the car. An amount of energy also went into accelerating the car from zero velocity to whatever speed it traveled, but most of that eventually went into heat when the car came to a stop.
This is a great example of the demonstration of the 1st law of Thermodynamics. We see that energy is not being created nor destroyed but rather just being transferred to another place.
The first law of thermodynamics is deceptively simple. Students often understand that energy cannot be created or destroyed.
I have to say that the 1st Law of Thermodynamics is really interesting. When I was younger I just assumed that energy was created and then once it was used it disappeared. But through reading the laws of Thermodynamics, I now know that energy can't be created or destroyed and when it is used it just simply being transferred to something else.
An idea that is associated with increased dispersion of energy in a system and/or its surroundings is that as dispersion increases the ability of the energy to be directed towards work decreases.
I don't understand that as the energy is dispersed (or as entropy increases) the ability to use energy for work decreases. Is there a reason as to why this energy can no longer work? How does the dispersion on energy cause this? Also is the decline of the energy's ability to do work also known as unusable energy?
Each macromolecule plays a specific role in the overall functioning of a cell. The chemical properties and structure of a macromolecule will be directly related to its function. For example, the structure of a phospholipid can be broken down into two groups, a hydrophilic head group and a hydrophobic tail group. Each of these groups plays a role in not only the assembly of the cell membrane but also in the selectivity of substances that can/cannot cross the membrane.
Goes to show how the important chemical properties and structures r are in biology. Although I not the biggest fan of Chemistry, I admire its detailed and critical use it has to help organism function.
"It has some small amount of polar character but it turns out that for most of the common chemistry that we will encounter that this small amount of polar character is insufficient to lead to "interesting" chemistry.
So in the C-H Bond it is Non-polar but has some electronegativity. I know that they say that it is still considered non-polar, but is that because it's electronegative is so small that it's electronegativity is considered unimportant to take into account. Also does anybody know of any other bonds like this?
The typical atom has a radius of 1-2 angstroms(Å). 1Å = 1 x 10-10m. The typical nucleus has a radius 1 x 10-5Å or 10,000 smaller than the radius of the whole atom. By analogy, a typical large exercise ball has a radius of 0.85m. If this were an atom, the nucleus would have a radius about 1/2 to 1/10 of your thinnest hair.
When put to scale it is always interesting to take into account how small an atom can be. Reading that it could have a radius of about 1/10-1/2 of my finest hair it just insane!
A line drawing that models a block (of any material) sitting on a generic incline plane. In this example some simplifying assumptions are made.
Don't really understand what the simplifying assumption from this model is. Did it's simplifying assumption cause us to not know how it would react in other scenarios, such as the sponge example?
A scale model of a Ferrari. There are many simplifications and most only make this useful for predicting the general shape and relative proportions of the real thing.
Out of all the examples provided, I have to say this is the one that made the most sense to me and really help solidly my understanding of simplifying assumptions. As shown in the example although we know the overall shape we don't know other details, such as how it runs or it's power. Goes to show once again what simplifying assumptions can simplify out.
simplifying assumptions are assumptions that are included in the model to simplify the analysis as much as possible.
I never heard of simplifying assumptions, but have definitely used them. Although they can help with simplifying analysis, you still don't get all the information, which is something I should keep in mind when looking at different models.