The Official Homework Help Thread

[KarlaKGB]

Thank you very much! I always get paranoid in group projects so I always want to make sure I'm doing everything correctly so I don't cost us points. But yeah, it makes sense since you're altering the different types of glove protection and the beans are being affected by that change.

wait is glove protection literally the type of glove u wear while sorting beans?

and technically the dependent variable is not the bean, it's the sorting time

the beans themselves shud actually be the controlled variable.

unless im misunderstanding wat bean sorting is

 

[radical6]

Why are square roots of imaginary numbers a thing, Why , Who decided i^2 = -1 ????

 

[Zandy]

Why are square roots of imaginary numbers a thing, Why , Who decided i^2 = -1 ????

A long time ago, people thought that negative numbers (and even zero) were outlandish concepts. Over time it turned out that the concept of a negative number (more precisely, the concept of inverses) was extremely useful in mathematics, engineer, physics, etc... Imaginary numbers are similar in that respect. They may not be as wide spread as negative numbers are today, however, their appearance in physics, etc... are extremely important.

 

[Jarrad]

ah, i see. thank you ! i never would have thought of that xD
im open to more ideas as well

When I took Photography at college I always tried to centre my photographs/edits around a very emotionally powerful subject. Though it's a good idea to take advantage of the travesty that was the holocaust, I don't think it's a good idea having the hand of a jew-sentenced-to-die coming out towards the viewer. It feels sort of.. insensitive.

Anyway, my advice would be to use children. Children show the utter most raw forms of human emotions. I'm sure there are many images and stories online of what it was like to grow up during the WW2-era, so I'd strongly suggest you find one of these and then try to express the emotions and feelings they would have had during that time through your art. If you're having trouble doing this then I'd recommend finding a powerful quote that's relevant to the subject matter to help narrate your art.

I'll show you a somewhat relateable image as to what I'm talking about.

Spoiler

I can't remember the exact theme of the project, though I interpreted it in my own way. This photo is a few years old, hence the amateur nature of it.

 

[DarkDesertFox]

wait is glove protection literally the type of glove u wear while sorting beans?

and technically the dependent variable is not the bean, it's the sorting time

the beans themselves shud actually be the controlled variable.

unless im misunderstanding wat bean sorting is

I actually think you're right about the dependent variable being the sorting time. Although, it wouldn't make sense if the beans were the independent variable since we're not doing anything to change them. We're changing the glove type in the experiment, but not doing anything to the beans aside from placing them in the cups. Thank you! Glad to have caught that now so I can edit it.

 

[KarlaKGB]

I actually think you're right about the dependent variable being the sorting time. Although, it wouldn't make sense if the beans were the independent variable since we're not doing anything to change them. We're changing the glove type in the experiment, but not doing anything to the beans aside from placing them in the cups. Thank you! Glad to have caught that now so I can edit it.

no the beans are the controlled variable aka the thing u keep the same to keep the experiment fair. in ur experiment ur testing a hypothesis that the glove type is related to the sorting time. therefore u need to keep everything else the same in order to confirm that the glove type is indeed responsible for the change in sorting time.

lets say ur doing an experiment where u want to see if moisture affects the time taken for a bean to germinate. ur independent variable is the moisture of the soil, and the time taken is the dependent variable. so u take one bean and u put it into dry soil, and u put the other into moist soil. but for some reason u decide to put one of the beans into a fridge, and keep the other at room temperature. well now u cant say with confidence say that the moisture of the soil affects the time taken to germinate. cuz the beans were at different temperatures too, so maybe it was the temperature that affected the time taken.

now back to ur bean sorting example, you would need to keep the beans the same to keep the experiment fair. like if u double the amount of beans u have to sort, its gonna take more time. or if u have more varieties of beans to sort. i kno ur question doesnt ask about controlled variables, but its probably something u can be asked about

 

[DarkDesertFox]

no the beans are the controlled variable aka the thing u keep the same to keep the experiment fair. in ur experiment ur testing a hypothesis that the glove type is related to the sorting time. therefore u need to keep everything else the same in order to confirm that the glove type is indeed responsible for the change in sorting time.

lets say ur doing an experiment where u want to see if moisture affects the time taken for a bean to germinate. ur independent variable is the moisture of the soil, and the time taken is the dependent variable. so u take one bean and u put it into dry soil, and u put the other into moist soil. but for some reason u decide to put one of the beans into a fridge, and keep the other at room temperature. well now u cant say with confidence say that the moisture of the soil affects the time taken to germinate. cuz the beans were at different temperatures too, so maybe it was the temperature that affected the time taken.

now back to ur bean sorting example, you would need to keep the beans the same to keep the experiment fair. like if u double the amount of beans u have to sort, its gonna take more time. or if u have more varieties of beans to sort. i kno ur question doesnt ask about controlled variables, but its probably something u can be asked about

I guess I'm confused with what you're saying. The controlled variable is just another term for the independent variable. The independent variable is defined as...

Statistics. (in an experiment) a variable that is intentionally changed to observe its effect on the dependent variable (Dictionary.com).

The beans remain the same. The numbers remain the same. The only thing we are changing and controlling in the experiment is the glove type. Like the definition, we are observing the effect of changing the glove type has on the dependent variable, sorting time.

 

[KarlaKGB]

no a controlled variable is not just another term for the independent variable

"The control variable (or scientific constant) in scientific experimentation is the experimental element which is constant and unchanged throughout the course of the investigation. The control variable strongly influences experimental results, and it is held constant during the experiment in order to test the relative relationship of the dependent and independent variables. The control variable itself is not of primary interest to the experimenter."

the reason i brought this up is cuz u initially said that the beans were the dependent variable, so i wanted to make it clear that the time to sort (which is the thing ur measuring) is the dependent variable, and that the beans are actually the control variable.

 

[Mimi Cheems]

Uhh >/////////< I'm embarrassed to be coming here for help, but I'm in Spanish 1 and I need help with translating these sentences //we can't use google translate bc it's full of lies @v@

 

[DarkDesertFox]

no a controlled variable is not just another term for the independent variable

"The control variable (or scientific constant) in scientific experimentation is the experimental element which is constant and unchanged throughout the course of the investigation. The control variable strongly influences experimental results, and it is held constant during the experiment in order to test the relative relationship of the dependent and independent variables. The control variable itself is not of primary interest to the experimenter."

the reason i brought this up is cuz u initially said that the beans were the dependent variable, so i wanted to make it clear that the time to sort (which is the thing ur measuring) is the dependent variable, and that the beans are actually the control variable.

Ahh, you're right. I was thinking of the wrong variables. Thank you very much!

 

[MelaniteMoon]

How do you determine if a molecule is polar or non-polar?

 

[KarlaKGB]

How do you determine if a molecule is polar or non-polar?

two things - the geometry of the molecule, and the relative electronegativities of the atoms in it.
take HCl, Cl is more electronegative than H, so the electrons in the bond will tend to gather around the Cl. this is a polar bond. illustrated like this:

another example is carbon dioxide CO2, O is more electronegative than C, so like above, the electrons in the bond will tend to gather around the O

however CO2 is a linear molecule, looks like O=C=O so although each individual bond is polar, the symmetry of the molecule means that there is no net dipole, and therefore its nonpolar

 

[Sona]

 

[Sona]

 

[radical6]

"How much do all fourth order consumers weigh, in kilograms? Assuming the fourth order consuemers weigh roughly .5-1kg per organism, how many organisms would that support?"

i.. i dont understand..didnt they just tell us how much they weigh..wtf does this mean

 

[Sona]

 

[Llust]

the final project for this isnt due until the end of february, but we're just starting a few months early. we were given the option to work in groups but i decided on just working on this alone

we need to design and construct a rube goldberg machine that uses at least four types of force (mechanical, heat, sound, nuclear, etc) and has a minimum of seven steps in order to turn off a light bulb. as far as i know, they way we do it doesnt matter. we can either use a light switch to turn it off or we can just drop a textbook on top of the light bulb itself to break it i.e. turn it off

our final designs are due monday and the only idea i have in mind is using dominos to start it out but thats it - any suggestions will be much appreciated

 

[Sona]

bump

 

[Sona]

BUMP

 

[Sona]