Any ideas on how to create a project demonstrating resistance?
Resistance showing how resistance works through electrical currents.Through temperature,thickness and length or materials.Any ideas on how to make a project demonstrating resistance. It does not have to involve electricity. The type of resistance in an electrical current. It just has to demonstrate it sort of like a model.
Answer:
We did a similar project in Physics recently.
You could do a stand up skit and show atoms bouncing off the cellular matrix and creating resistance.
How to shift a function and reflect about x-axis?
I have a problem in my math class and it's been awhile since I've had to do it and I can't find it in my book. It's pretty simple but for the life of me I can't remember how to solve it.
For the function y=square root of x, write final function that is shifted 4 units to the left, shifted 3 units down vertically and reflected about the x axis.
Answer:
For that type of function, complete the squares; then determine the possible shift... To reflect about x-axis, treat the graph of the original function as the mirror in some sort and then, you get somewhat the reflected graph...
Oh... for your problem, you get...
y = -√(x + 4) - 3
Good luck!
How to remember 50 vocabulary words by tonight?
I tried studying, but I keep forgetting the words. I can't make a song. I need to remember the words and what they mean.
Answer:
Do you need to remember them in order? You could put them into sections eg. animal cat dog creature elephant - banana carrot vegetable fruit apple pear OR A. apple, abrieviation, acronym, also - B break burst blaspheme - C
You could make a story...
I woke up and saw a POSTER on the CIELING, I stayed in bed whilst CONTEMPLATING the meaning of the word CATASTROPHY before DRAGING myself downstairs so that I could CONSUME some CALORIES before TRANSFERING my bag to the AUTOMOBILE.
You could write the words again and again, hiding them each time and seeing how many you remember.
If they are in a differnt language I would advise the story. Write everything but the 50 words in english and then read the story/write the story.
You could get off YA and start memorising...
Good Luck!
Need an idea of how to start my university essay?
I have an essay to complete, quite major for one of my uni papers but I'm at a loss where to start, when it comes to the introduction.
I have to discuss the role of managing exercise in Type 2 diabetes.
I have source information, but I'm still at a loss.
Can someone just give me a kick start with a possible suggestion of what might be the first thing to discuss in my essay?
Answer:
describe some really drastic differences between a normal life and the life of a type 2 diabetic.here are some ideas for the body:
who discovered the link between diabetes and exercise
what happens if you have it and you don't exercise
what types of exercise are good/bad for type 2 diabetics
how often you should exercise
if diabetes makes it easier or harder to get enough exercise
How to write a eulogy about May from the secret life of bees?
I need to write a eulogy about May Boatwright from the secret life of bees. Does anyone have any ideas that i could include in my eulogy about her?
Answer:
Just talk as much as you can about her empathy. That was her main thing. She felt the weight of the world on her shoulders, and was always able to walk a mile in your shoes. You should also add a bit about her funny personality and love of the smallest forms of life, even roaches.
How to write a letter to the collector of the state seeking permission for a fashion show?
Dear Friend pls help me in writing a letter to the collector of the state asking for the permission for a fashion show event.
Answer:
I use pen and paper
How to memorize a 3000 word essay in a day?
I have a english essay that I need to memorize:[ I have 11 GCSE exams next week so it is hard to juggle everything around. Advise? It's on my laptop btw not written up.
Answer:
Haha, yeah GCSE's suck. I never really found English a problem but my French speaking exam was a real pain in the preverbal. The way i managed to learn it was breaking it down into chunks and memorising them, then reciting it to a family member of friend. On top of this i also recorded myself on my Iphone and listened to it for a few nights before i went to sleep. This seemed to help. I also revised the hell out of it the night before/morning of the exam so on the day i pretty much knew it off by heart.
Obviously French and English have their differences, but the basic aspects still apply. It also helps to get a decent amount of sleep the night before (trust me!).
Good luck!
how to start my concert hall review paper?
I need to write about 5 best places to hold a concert. I have where I'd like to write about I just don't know how to write the intro.
Answer:
First off, I would write your paper, the body paragraphs, before writing the intro and conclusion. Just have your thesis and write the body paragraphs.
A few ideas for the intro: (I get stuck on intros too, it sucks)
-Write about the 1st place winner's location and what makes the place unique.
-Write about the history of concert halls, maybe the 1st place winner's concert hall again (Carnegie Hall has a very interesting history)
That's all I got.
But a side note... start with these ideas first in the intro and slowly make a smooth transition to your paper topic, and then plop the thesis right at the end of the introduction.
Hope I've helped! Maybe even only in sparking an idea in your head.
How to find the area of a scalene triangle with only the sides?
Lately in math we have been using the Law of Sines and Cosines to solve triangles. I came across a question though that asked how to solve this triangle; here is the question:
The dimensions of the sides of a triangular plot of land are 36 feet, 42 feet and 48 feet. Find the area of the land, to the nearest foot.
Answer:
Law of Cosines:
a² = b² + c² − 2 • b • c • cos[A]
36² = 42² + 48² − 2 • 42 • 48 • cos[A]
cos[A] = 0.6875
A = 46.57º
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Law of Sines:
sin[A] ⁄ a = sin[B] ⁄ b = sin[C] ⁄ c
sin[46.57º] ⁄ 36 = sin[B] ⁄ 42 = sin[C] ⁄ 48
sin[B] = 42 • sin[46.57º] ⁄ 36
B = 57.91º
sin[C] = 48 • sin[46.57º] ⁄ 36
C = 75.52º
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... and A + B + C do add up to 180º
Now you know all the sides and all the angles.
B
⁄ \
⁄ \
c = 48 ⁄ \ a = 36
⁄ \
⁄ ___________\
A b = 42 C
If the base is defined as side b, then the height is:
h = 48 • sin[A]
h = 48 • sin[46.57º]
h = 34.86 ft
... and the area is:
A = (½) • b • h
A = (½) • (42) • (34.86)
A = 732 ft²
How to find the differential equation for decay?
I need to find the give the equation that models the decay of Uranium 238. How do I do this?
Answer:
The rate at which *any* radionuclide decays is proportional to the amount of the radionuclide present. Mathematically, we represent this as:
dN(t)/dt = -λ*N(t)
where N(t) is the amount of the radionuclide present at time t (this can be measured in any convenient unit -- atoms, moles, grams, tons, etc.)
λ is a positive constant of proportionality called the "decay constant". The decay constant is related to the halflife of a radioactive nuclide in a simple way, as I'll show below.
dN(t)/dt, of course, is the rate at which the N is changing at time t. Both λ and N(t) are positive numbers, so dN/dt is negative, as it should be for a quantity that is decreasing with time.
This differential equation is "separable", and we can write it as:
dN(t)/N(t) = -λ dt
Integrating both sides of the equation:
ln(N(t)) - ln(No) = -λ*t
where No is the value of N at t = 0.
ln(N(t)/No) = -λ*t
N(t) = No*exp(λ*t)
This equation gives the amount of radionuclide present at time t as a function of t. You can look up the decay constant of 238U, for this specific case.(see first source).
The halflife, T, of a radionuclide is the time it takes for the half the amount of material initially present in a sample to decay. That is, it is the time at which N(T) = No/2.
Plugging this into the equation ln(N(t)/No) = -λ*t, we have that:
ln(No/(2No)) = -λ*T
ln(1/2) = -λ*T
ln(2) = λ*T
T = ln(2)/λ
This is a general relationship between the halflife and decay constant.
