Homework Help

hey It's me again, I need Help with this pendulum problem, it is easy : The frequency of vibrations (fluctuations) with a small amplitude of the ball attached to a weightless string is 1 Hz. I have to find the frequency of small vibrations of this body suspended on the same string near the edge shown in the picture. The distance d of the edge from the suspension point is 1/4 k. it's easy but i have trouble with comparing it to the "seconds pendulum" Because with seconds pendulum we get frequency f= 1/2 Hz. but here we have so can we compare the two periods like this? so plugging these in I got this: is this correct…

I have to submit my assignment on time and I need some help. Could someone provide some help or source of reference to me? Thanks. 1.His-tag is well known for its affinity towards nickel and other metal ions. However, other metal-binding proteins present in the cell lysate can also be eluted with our target protein using the present purification protocol (using metal chelating column). How to modify the elution step to improve the purity of the His-tagged fluorescent protein? 2.Affinity tag may interfere the native function of the target protein. Using recombinant DNA techniques, I can introduce a protease cleavage site into the construct so that the affinity …

Write a Python program that prompts the user for the length and width of a rectangular field (in feet, allowing a fractional part), then calculates and prints the area of the field in acres. Area = length times width, there are 43,560 square feet in an acre.

Hello. I was wondering if someone could show me (using the curly arrows) how Potassium Hydrogen Phthalate would react with NaOH to turn it into a secondary standard and then how that standardised NaOH would subsequently react with HCl? Thanks!

An atmospheric chemist, studying the pollutant sulfur trioxide (SO3), places a mixture of sulfur dioxide (SO2) and oxygen (O2) in a rigid 4.25 L container at 788 K and 1.85 atm. When the reaction occurs, gaseous sulfur trioxide is formed according to the balanced equation below and the pressure falls to 1.50 atm. SO2 + ½O2 → SO3 Assuming that the temperature at the end of the reaction returns to its original value, what is the partial pressure of sulfur trioxide (SO3) after the reaction? Provide the answer to one decimal place.

I have information Km and Vmax dependence on pH: pH 6.0 6.3 6.5 7.0 7.5 8.0 KM (mM) 0.120 0.163 0.216 0.250 0.210 0.160 Vmax 0.430 0.480 0.526 0.530 0.450 0.313 …

Liver alcohol dehydrogenase (ADH) can oxidize ethanol or other alcohols, including methanol. Methanol oxidation generates formaldehyde, which is very toxic, causing blindness. My dog Clancy mistakenly drank 50 mL of washer fluid (a solution 50% w/w in methanol). Knowing that methanol would be discharged eventually by Clancy’s kidneys if its oxidation could be blocked, and realizing that, in terms of methanol oxidation by ADH, ethanol would act as a competitive inhibitor, I decided to offer Clancy some wine. How much of wine (12% w/w ethanol) must Clancy consume in order to lower the activity of his ADH on methanol to 5% of its current value? As…

A mass m = 13 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4104 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is μk = 0.5. The mass leaves the spring at a speed v = 3.3 m/s. 1) How much work is done by the spring as it accelerates the mass? 2) How far was the spring stretched from its unstreched length? 3) The mass is measured to leave the rough spot with a final speed vf = 1.4 m/s. How much work is done by friction as the mass crosses the rough spot? 4) What is the length of the rough spot? 5) In a new scenario, the block only makes it (exact…

Aspartate aminotransferase (AAT) enzyme was being purified from pigs heart. Tissues were homogenated and cells were eliminated with gel filtration. Nucleic acids were precipitated with polyethylenimine and extract1 was received with volume 2dm3. Then 50microLitres of this extract1 were added to 3cm3 buffer and optical density was measured at 280nm (1cm light path) and the value of it was 1,7. How should I count the amount of protein in extract1?

How to count the amount of protein in 2ml of extract, when 50microlitres of this extract were diluted in 3ml of buffer and concentration of protein was 1,7mg/ml. Thank you.

So, how on Earth do I solve this equation using the quadratic formula. e^2x+e^x-6=0 Thank you for helping.

Hello everyone, I would like a helping hand for this exercise: "A mixture of carbon monoxide, methane and nitrogen occupies a volume of 40 mL. Burning this mixture with an excess of oxygen, a volume of 42 mL is observed after cooling at room temperature and together the formation of 36 mL of dioxide of carbon. Determine the volume of each component of the mixture. " I think this is the reaction: CO + CH4 + N2 + O2 --> CO2 + N2 + H2O, balanced: 2CO + 2CH4 + 5O2 --> 4CO2 + 4H2O removing N2 because acts as a spectator molecule. Now, how do I proceed??

Solve -3(a+3) +5 (3-a) = -50 I can’t apply Properties of Equality.

In Example 2, everything was fine, what I was doing matched perfectly with the book until the part "Setting this equal to zero gives *equation*". How is this? The expression on the left has no p, how can it have a p on the right? If the derivative dS/dx is set to 0 how is an x on the right, at the other side of =? I understand the rest. It's just that I don't see how one expression results in the other. That's all. Thank you. P.S: Sorry if images are annoying, english is not my first language, so this way it's easier for me to explain and for you to understand.

In Example 1: I don't understand the procedure of this exercise. I do know why the derivative of the angle with respect to time is 2π/30. What I don't understand is the rest. It says x=10tanθ, how is this possible? It gives me, and the computer, by tanθ=opposite/adjacent, x=10/tanθ, not 10tanθ. What I don't understand either is why both derivatives (dx/dθ) and (dθ/dt) are multiplying. Why is x=8 choosen? Why not any other number? Thanks for the help.

I have this question from an undergrad bio course, it would be great if someone could provide and answer or suggest what fields I need to investigate in order to understand the question. If you were to preform this process: 1. extract DNA from a fly species with the aim of amplifying the sequence for Cytochome Oxidase C Subunit 1 (commonly preformed in forensic investigations). 2. Amplify the COI gene using COI primers 3. Seperate co-amplified products using cloning Would you expect all the sequences to be IOC? And if they are not IOC, what type of molecule would you expect the obtained sequences to correspond to? Sorry if the ques…

Hi, I have to prove an equation and I'm having trouble. I have to de-compose vectors from an electric dipole to prove the value of the electric field of a dipole on a bisecting plane as such: Where p is the dipole moment, so p = qs. Since the x-value of the fields of the two charges negate themselves, I only want the Y values right? So I put the value of each field in a "sin", and I'm stuck from there...:

This question is mainly asking to rewrite a different graph equation (maybe parabolic, curved, etc) and changing it to a normal linear equation in the form y = mx+b. The question 5 and 6 can be seen in the picture, with further questions asking: i) Determine the dependent and independent variable. ii) Re-arrange the equation so that it is in the form of the straight-line equation. iii) What is the gradient and y-intercept of this re-arranged equation? iv) Sketch what the straight-line graph would look like. I know that linearisation works by first finding out what the y and x variables and then leaving x alone along with m multiplied to it. This works for simple…

From here https://arxiv.org/pdf/physics/0302045.pdf Using Eqs. (9) and (10), we obtain X(x2 + h, t, v) − X(x2, t, v) = X(x1 + h, t, v) − X(x1, t, v). (11) Dividing both sides by h and taking the limit h → 0, we obtain ∂X /∂x ¦ x2 = ∂X/ ∂x¦ x1 I have lost familiarity with the notation and would appreciate a bit of help if possible. My copy and paste has mangled the form of the expression (which can be seen properly at the link at the top of the OP. It is the import of the x subscript1 and x subscript2 in the expression that I am rusty with(if I was ever up to speed in the first place -some 30years ago) T…

Explain how cholesterol metabolism is regulated by internalized cholesterol? I have been reading up about this quite a bit but find a lot of contradictions and irrelevant information. From what I have learned I know that HMGR plays an important role in regulating the synthesis of cholesterol but I am struggling to understand exactly how it does so. Also, are there any other ways that cholesterol synthesis and metabolism is regulated by internalized cholesterol?

Ques: An 8000 kg engine pulls the train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 newton and the track offers a frictional force of 5000 newtons then calculate the force of wagon 1 on wagon 2. Ans ( I tried) : Total weight =18,000 kg Net force exerted= 40000 - 5000 = 35000 Accelration: 35000 / 18000 = 35 / 18 = 3.5 m/s^2

How is this equation derived (The energy of the target electron during Compton scattering)

So as my tech project for my GCSE I was given a problem. There isn't much point going into huge amounts of detail but essentially what I need to do is to create electricity from drainpipes. I do not know how to do this I know it would involve dynamos and such but if someone could give me a more detailed explanation that would be great Thanks in advance, Lewys

I'm sorry if I posted in a wrong place, I want to ask if I can use LaTeX synthax in this forum to type maths formulae and symbols Thanks

Let for j = 0,. . ., n aj = a0 + jd, where a0 and d are fixed real numbers. Calculate the determinant of the matrix A of size (n + 1) × (n + 1). Matrix A is below