Homework Help

What is the structure of NH4OH? The only google image result I got was this, but that doens't seem possible because the H has two bonds.

Greetings, I'm struggling with a signal analysis electrical engineering college assignment. We need to a derive differential equation for a low-pass filter, high-pass filter and a band pass filter (made by connecting the output of a low pass filter to the input of a high pass filter). Here are diagrams for reference: Low pass filter: High pass filter: Band pass filter (buffer can be removed): The equations I derived are: - low pass filter: Vo=Vi-RC(dVi/dt) - high pass filter: Vo=RC(dVi/dt) - band pass filter: Vo=R2C2((1-C1-R1)-R1C1(d^2Vi/dt^2)) The equation for the band pass filter I found by making the input of the high pass filter the output of the low pass fil…

Q: Vertically polarized light from a helium neon laser passes through a linear polarizer with its axis of polarization oriented 15° from the vertical axis. If a second polarizer is placed in the beam after the first polarizer with its axis oriented at 45° from the vertical axis: (a) How much light is transmitted? I think that this is Malus's law : I = Io cos2 (15o) Io cos2 (30o) = Io 0.6998 or 69.98% Io (b) What will be the polarization angle of the transmitted light? This is the part that I am unsure of and need help. I think that it is linearly polarized at an angle of 45o . Any help will be greatly appreciated! Thank you! tizio volpe

I would like to hear some special suggestions. Something original and interesting.

A woman who gave birth to a baby a week earlier was frantically brought to a hospital with septicemia and a very high fever? We had to do an elaborate set up of tests to find the unknown and I think it's either 1) streptococcus pneumoniae 2) streptococcus pyogens Other options are seem to be: -Streptococcus bovis -Enterococcus faecalis -Staphylococcus aureus -Staphylococcus epidermis -Staphylococcus saprophyticus -Micrococcus luteus -Micrococcus varians

Dear All, I am trying to put together a series of apps to simulate, illustrate and demistify some of the unnecessary complexity that surrounds the learning of physiology. I have begun by creating a Nernst/Goldman simulator and I intend to continue developing this app until is as useful as an undergrad textbook. The generation of the resting membrane potential is the first thing I teach and its always useful when you have a suitable tool. especially when your students are of mixed academic and language capability. Unfortunately im self funding so I have had to try to scoop back the huge cost of app development. So I've decided to charge 99cents, but I'm hoping to se…

I'm having some difficulty solving this problem, we have x on the graph and its unknown , the gradient is of a straight line is 2.3 x10^4 the interception on the y axis is 5.8 x10^4 m we know y is 6.2x10^5 m i need to find x so i tried rearranging the equation y=mx+c to get x=y/m-c but i get a rely high number so I'm guessing its not correct please help me

If Sulfur 34 undergoes alpha decay, what will it become? I'm preparing for a test tomorrow and this is really confusing because everybody i ask says its already stable therefore it cant go under alpha decay but apparently it can. Also, what is the 34 in sulfur 34 mean and what does it do? Thanks!

I've been planning to make a pharmacology project to take part in a science competition. I'm a sixteen year old student from Turkey, and this competition helds place in my country. I have a good project in my mind, but testing with vertebrates is against the rules. I have searched for other ways to do my project and now I'm thinking about in silico experimentation. What do you think about in silico? Is it something I can use if I have an expert with me? If you have any information about university labs with this technology, I would be pleased to learn about them. Thanks for sharing your time and apologies for any spelling/grammar mistakes!

A 1.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point in its swing when it is moving horizontally, the ball collides elastically with a 2.0-kg block initially at rest on a horizontal frictionless surface. v1i = 7 m/s and v2i=0 m/s v1f=-2.33 m/s and v2f=4.66 m/s c) If the coefficient of static and kinetic frictions are 0.3 and 0.23 respectively between the block and the surface, how far does the block travel before coming to rest?

The problem I have is the following: "A magnetar has a magnetic field of 1015G on its surface. Also, the radius of the magnetar is 10 kilometer. The magnetar is at the same distance from earth as the moon is. How far do you have to travel towards it to reach a magnetic field of 104G?" I have no idea how I would even approach this problem.... Can someone give me a push in the right direction? Any help would be much appreciated! Also, I'm new here. Please forgive me if I broke a rule.

I keep getting results that don't make sense. So, the idea is I have to find the spring constant only using a meter stick, cross-bow(rubber band), and tape. What I did was I shot the cross-bow straight horizontally and when shot 5 times I got the average distance it took for the ping pong ball(.0025 kg) to hit the ground. Here are the known variables with the experiment: d = 4.471m h = .83m g = 9.81(given) x(spring stretched) = .17m Now, my logic was to use the height and distance the ping pong ball went to find the time it took for the ball to hit the ground. [math].83m = \frac{1}{2}(9.81)t^{2}[/math] [math].83m = (4.905)t^{2}[/math] [math].1692 …

I’ve been stuck on question D for some time now. I cannot even begin to get my head around the fact that when Y goes to infinity the solution remains finite therefore we can use this to simplify the equation. For X I got X(x)=Ae^(kx)+Be^(-kx) For Y I got Y(y)=Dcos(ky)+Esin(Ky) Can anyone give me any clues as to how the infinity concept simplifies the Y equation or at least what concepts to look up as we didn’t cover this in class. I may have got the two equations I typed above wrong. In that case I would be very grateful if someone told me as I can’t see it. Any help that stops me chasing my tail would be much appreciated.

Presently, two things I need clarity on, please. Thing 1: I found this on youtube I organized it in the following and hope it's good for arriving at fair approximations of torque and rpm... T = I x alpha = F x r x sin(theta): By example... A rotor Mass of 100 kg, 'r' of 2 meters, A force of 75 Newtons, point of force at a 90 degree angle. First filling in T = F x r x sin(theta), as such: T = 75 N x 2 m x sin(90) = 150 N*m T = 150 N*m Next, add the other part of the equation, T = I x alpha; I = 1/2Mr^2, hence: T = 150 N*m = 1/2M x r^2 x alpha Resolved progressively... T = 150 N*m = 50 kg x 2^2 x alpha T = 150 N*m = 50 kg x 4 x alpha T = 150 N*m = 200 x alpha Nex…

I'm failing to see the relation between triangle numbers and numbers written in base of triangle numbers. Can somebody explain this to me?

A spring is hanging from a ceiling, and you attached a mass to it. First scenario: You support the mass by your hand from the spring's uncompressed position and slowly released it at it goes to stop. Second scenario: From the uncompressed position of the spring, you let the mass dropped quickly. Question: Is the maximum (extension) stretch of the spring when mass is dropped quickly, equal to the stretch of the string when the mass is released slowly?

I've been up all day and am kind of frustrated I can't figure this out. I don't want to mess it up before lab and ruin my entire protocol. I need to make a 2mg/100µl solution with 1000mg NaCl, thus I need to deduce the volume needed to mix the NaCl with to give this ratio of 2mg/100µl I thought the formula was (m1)(v1)=(m2)(v2) but that doesn't seem right when I did the calculation. can some please point me into the right direction for this calculation. I've been up all day doing exams and I am just whiped out right now..

what is the importance of determining the species composition and relative abundance of an organism?and also why do we need to determine the percentage cover of that organism? Answer pls.

Considering that both analytical methods should be accurate to within 1% for the major component, do the results of the two methods agree? Explain in two sentences or less. If they do not agree, give a plausible explanation. my GC results Fraction 1 = 92.7% EtOAc 7.29% 1-BuOH Fraction 2 = 58.6% EtOAc 41.4% 1-BuOH Fraction 3 = 3.76% EtOAc 96.2% 1-BuOH RI results Fraction 1 = 87.5% EtOAc 12.5% 1-BuOH Fraction 2 = 49.5% EtOAc 50.5% 1-BuOH Fraction 3 = 2.5% EtOAc 97.5% 1-BuOH

1. Write the balanced equation for the NaBH4 reduction of camphor, showing all likely products. 2. Identify the products of this reaction as structural isomers, enantiomers, or diastereomers. 3. Determine the limiting reagent and calculate the theoretical yield of the product (borneol and/or isoborneol)

How would I know if my refractive index results agree with the shape of my plot of the distillate temperatures (vapor temp vs distillate volumes)? What do I need to look for?

My answer for a is the Y-track My reason (for b) is because Y-track has more steeper slope which will give the ball a greater speed. I need to explain it further, I just need help with letter B. I already finished C and D oh i think i posted my question in the wrong section, sorry

Can you please help me with the following questions : ques 1 : Consider the matrix_add function shown below: void matrix_add(int a[128][128], int b[128][128], int c[128][128]) { int i, j; for (i = 0; i < 128; i++) for (j = 0; j < 128; j++) c[i][j] = a[i][j] + b[i][j]; } In execution of the loop body, three memory operations occur in order of a[i][j], b[i][j], and c[i][j]. The processor has a 64KB, 4-way set-associative, 64B-block L1 data cache, which uses write-back, write- allocate, and LRU replacement. The cache is initially empty. The addresses of array a, b, c are 0x10000, 0x20000, 0x30000 and size of int variable …

i have a school problem to do, but have no idea where to start of how! a person of mass m wants to dive from a 3.0 m board above the water, by jumping off the board rises to a further 0.6 m, at what speed does m enter the water? knowing that g is 9.8 m s-1 ( acceleration due to gravity)

Please someone write this algorithm in Python please. Divide and conquer N runners participate in a 100-meter sprinting competition. All runners are seeded from number 1 to number n. After all the running heats are over, the competition results are determined by comparing the time. The sprinter with the fastest time is ranked 1st and the sprinter with the slowest time ranked nth. Write an algorithm that computes the number of sprinter pairs that have the competition results opposite to the pairs’ seed numbers. The running time of the algorithm must be O(nlgn). Input: list of seed numbers according to the sprinter results, from the fastest to the slowest. Outpu…