Sunday

April 20, 2014

April 20, 2014

Total # Posts: 97

**chemistry**

What is the final volume of NaOH solution prepared from 250.0mL of 0.800M NaOH if you wanted the final concentration to be 0.200M

**quantum physics**

help please!!!

**Quantum Physics**

@Pari. Another fake ? Where did you get theta: 2*B*t and phi: 3*pi/2 from ?

**Quantum Physics**

Theta=pi Phi=s*o*B

**Quantum Physics**

Theta = 2bt Phi = pi/2 imgur dot com/eMrPvfk

**Quantum Physics**

pi/2 B*t and 2*B*t were tried long time ago, and failed. Anons 234 idea about conversion of |0> to |+> / |-> basis was tried and yielded e^(2Bt)|1>. The grader does not take that answer equivalent to pi 2Bt.

**Quantum Physics**

It is coming from the expression: (1/(sqrt(s*H*i*t)))*(p*o*o*p)

**Quantum Physics**

You know where it is coming from, don't you?

**Quantum Physics**

This is a special optimization question. You just leave both fields blank and click submit. The grader will figure the correct answer for you for theta, and will simply mark the blank phi as correct. try this!

**Quantum Physics**

OK, theta is f*a*r*t/2

**Quantum Physics**

Well try it and you'll see.

**Quantum Physics**

Since phi is irrelevant, you must leave it blank. The grader is intelligent and will mark it as correct.

**Quantum Physics**

The answer, my friend, is blowin' in the wind, the answer is blowin' in the wind.

**Quantum Physics**

Yes

**Quantum Physics**

They will both be 0 because X is perpendicular to z so the field doesn't effect it. The transformation by X doesn't either because it is still around the z axis.

**Quantum Physics**

Using the formula for the state psi under the act of a hamiltonian, you deduce that theta = pi and psi = -bt. However the -bt needs to be changed. think about why it needs to be changed

**Quantum Physics**

Sorry about the mistake earlier i copied down the wrong answer, that was an answer from a previous attempt. The correct answer has already been stated on here.

**Quantum Physics**

theta = pi phi = 0

**Quantum Physics**

8d) Theta = pi Phi = 2*b*t

**Quantum Physics**

i tried theta = pi and phi = -b*t and theta = pi and phi = -2*b*t try it with 2bt

**Quantum Physics**

Im certain theta is correct, unsure about phi. it is not -B*t or -2bt. try 2bt

**Quantum Physics**

theta = pi (8D)

**statistics**

According to the Journal of the American Medical Association, the doctors found that in the week before and the week after Thanksgiving, there were 12,000 total deaths and 6062 of them occurred in the week before Thanksgiving. Construct a 95% confidence interval of the proport...

**statistics**

The National Highway Traffic Safety Administration analyzes the crash test data for new cars. One variable measured is the severity of the injury due to a collision. The higher the severity, the higher the points assigned. Assume that the injury rating is normally distributed ...

**Statistics**

According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was $2.835. AAA noted that the standard deviation of the fuel price was $0.15. A random sample of n=100 gas stations is selected and the mean gas price is analyze...

**Math**

I made a 95 on a test of 20 questions, but it took 35 tries. What is my real grade?

**math**

A round tank hold 550 gallons filled to the brim. Its capacity is 10 gallons for every inch in height. How high is the tank in inches, in feet. How high would you fill it get to the 170 gallon level?

**axia**

a=p(1+r)^n p=$4000,r=0.10, and n=2years at the end of 2 years A is

**math**

13 cents for A 12 cents for B. total protein greater than twelve grams. Total fat less than eight grams. Total grams less than thirty five grams. .5 grams protein and .3 grams fat for A. .6 grams protein and .2 grams fat for B. what is optimal cost

**Business 100 **

select an organization with which you are familiar and discuss the impact of that organization's level of social responsibility on a stakeholder group of your choice

**Microbiology**

How are algae harmful to humans?

**math**

the area of triangle wxz in the diagram below is 48 cm2. what is the perieter in centieters of triangle wxz

**Statistic**

You are the microbiologist at a national food processing chain. Two independent subcontractors are bidding to produce your latest food item that should really boost sales. It is your job to determine which plant should get the bid based on their microbial cleanliness of their ...

**Statistic**

You have been screening compounds with the Ames test to determine if they are mutagenic. If a compound is mutagenic, more colonies will grow in the presence of the mutagen. You have obtained the following data from triplicate samples: Number of mutant colonies Control: 55, 59,...

**Statistic**

Your microbrewery is not producing beer quickly enough. You have been conducting an experiment on the relative growth rate of the two yeast types by measuring the turbidity, using absorbance units, of the growth medium. You obtained the following two data sets. a. Yeast 1: 0.1...

**Biology**

Explain how skin, bones and muscles are related to each other and Why is this relationship important to the understanding of the skeletal and muscular systems?

**biology**

Propose a reason why you would see several differences between different slides of skin

**Biology**

If all nerves respond to stimuli why can’t your eyes “hear” sound and your ears “see” light?

**Biology**

If the doctor presses on the right hypochondriac region, what organ is the doctor likely pressing on?

**Biology**

Why is proper microscope technique important for studying Anatomy and Physiology?

**Microscope**

True or False? Resolution decreases as the amount of light coming in on the object increases?

**Biology**

Which of the following organs would not be visible if you cut the body in a mid-sagittal section? Explain? a. Brain b. stomach c. heart d. kidneys

**Biology**

I just want to know if my answers are right for this folowing: 1. The nose is MEDIAL to the ears. 2. The elbow is DISTAL to the shoulder and PROXIMAL to the wrist. 3. The heart is ANTERIOR to the spine. 4. The stomach is DEEP to the ribs. 5. The pinky finger is DISTAL to the t...

**Physics 1**

Chap. 11, #16. (II) A 0.60-kg mass vibrates according to the equation where x is in meters and t is in seconds. Determine (a) the amplitude, (b) the frequency, (c) the total energy, and (d) the kinetic energy and potential energies when x = 0.30 m.

**Physics 1**

(II) How close to the edge of the 20.0-kg table shown in Fig. 9–47 can a 66.0-kg person sit without tipping it over?

**Biology**

Briefly describe what effect you expect each of the following variables to have on enzymatic activity. 1. pH of 3.0 2. decrease in temperature 3. increase in substrate concentration 4. increase in enzyme concentration 5. addition of phenylthiourea(PTU)

**Math/ Physiology**

Why must your line intersect the origin of the graph ( zero concentration equals zero absorbance)? Explain

**Math/ Physiology**

Why do you draw a linear graph of absorbance versus concentration even though your experimental values deviated slightly from a straight line?

**College Algebra**

Solve: x^2e^x+x e^x-e^x=0

**statistics**

which has a larger standard deviation: the distribution of weekly allowances to 12-year olds or the distribution of monthly household mortgage payments?

**chemistry **

How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)---> 2NH3(g)?

**Physics**

The answer is 1440 N/C

**ENG-1B**

Is the climax on "The Story of an Hour by Kate Chopin artistically effective?Explain in 7 to 10 sentences

**Physiology**

Name a disease caused by a defect in the mitochondria and describe the symptoms. In both cases, the disease may refer to a structural defect in the organelle, or some type of abnormal activity that takes place inside the organelle.

**Physiology**

Name a disease caused by a defect in the lysosome and describe the symptoms.

**Physiology**

Indicate whether the following circumstances would tend to increase, decrease or have no effect on the rate of enzyme activity. 1.adding more substrate but keeping the amount of enzyme of the same 2.adding more enzyme but keeping the amount of substrate the same 3. adding a co...

**Physiology**

Anesthetics such as ether, chloroform and nitrous oxide reduce responsiveness of cells by blocking ion channels and altering other properties of cells. What chemical property of these molecules enables them to easily enter cells?

**Physiology**

Prostaglandins are formed as part of the inflammatory response, and are often formed after a cell has been damaged. From what cell organelle are prostaglandins formed?

**Physiology**

Why do cells tend to die if their lysosomes are damaged and break open?

**Physiology**

The muscle cells of a trained athlete tend to have more mitochondria than those of a couch potato. Why?

**Physiology**

Briefly answer the question about cellular processes. (Hint: think about the function of the cell in question.) Cells in the pancreas, which makes a lot of digestive enzymes, tend to have a lot of rough endoplasmic reticulum. Why?

**Chemistry**

what if you want to calculate the number of moles ammonia gas from 3.0L of H2 and 3.0L of N2

**english-1B**

Is the climax on "The Story of an Hour by Kate Chopin artistically effective?Explain in 7 to 10 sentences.

**Physiology**

What is the volume of 0.23 kg of pure water?

**Physiology**

Pure gold has a density of 19 g/ml. If you bought a gold ring and found it had a volume of 0.3 ml and it weighed 5.7 grams, is it real gold? Show me your calculation

**Chemistry**

Experiment on Titration of Acids and Bases Suppose some deionized water was left in the buret before it was filled with the oxalic acid solution you were using as a primary standard. When you perform the standardization of sodium hydroxide in Part 3, how would the excess water...

**Chemistry**

Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

**Chemistry**

As one descends group 6A of the periodic table, the number of valence electrons found in each element A. Increases B. Decreases C. Remains the same

**Chemistry**

Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

**Chemistry Help Pls!!!**

A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?

**Chemistry**

In the reaction: P4 (S) +Cl2 (g)PCl5(s), 1. If you have 10.00 grams of Phosphorus to react with 220 grams of Chlorine gas, what would be the theoretical yield of PCl5(s), in grams? 2. Why was there condensation of the beaker of cold water when a blue flame was passes u...

**Financial Math**

Initial deposit of $1100.00 on June 1. APR of 2.0%. What is the amount of interest earned on December 31? What is new balance?

**Physics - Standing Waves**

a) A plot of lnv vs. lnT should be a straight line. Why? b) What is the slope of the straight line? c) What is the intercept of the straight line?

**Physics**

A string is under a tension of 700.0 N. A 1.5 m length of the string has a mass of 4.5 grams. What is the speed of a transverse wave of wavelength 0.50 m in this string? What is the frequency of the wave?

**financial management**

What role do present value and future value have in the management of an organization?

**chemistry**

In the balanced equation MnO2 + 4HCl = MnCl4 +2H2O, how many moles of MnCl2 will be produced when 1.25 mol of H2O are formed?

**counseling**

What do the following scores (Standard score of 130, a T-score of 70, and z score of 2 and a stanine of 9) have in common

**Math 115**

Which number shown in parentheses is a solution of the given equation? A)1/3x+5=7 (6) B)1/3x+5=7 (9) C)2/3x+5=7 (9) D)2/3x+5=7 (6) would the correct answer be C

**Math 115**

-3/5+(8/35)= 2+4.375=6.375 Is this correct? 1Kilogram= 35.2739619ounces 2.1Kg= 2.1=35.274= 74.0754 nearest hundredth would be 0.800 is this correct?

**Math 115**

18Kg=_____g 1,000g+8,000g=9,000g Is this correct

**Math 115**

Still can't figure this out 2.1kg=_____oz (Round to the nearest hundredth)

**Math 115**

Please check answers 461mm=_____m answer 461/1000=0.461m Second one 20lb= 320oz 20lbs*16ounces= 320oz

**Math 115**

I need help with these problems 1. 18kg=______g I don't understand this. 2.1kg=______oz. can't figure this out. 3.20lb=______oz can't figure this out. 4.461mm=______m don't know where to begin. Can some please help me understand these problems.

**Math 115**

Please check answer. The sale tax rate in a state is 7.5%. If you pay a tax of $17.50 on an item that you purchase, what is its selling price? 17.50*7.5=$131.25 is this correct?

**Math 115**

How do convert 4 7/8 into a percentage. Is tis correct 7/8=0.875*4=3.5%

**Math 115**

Is the following set of numbers a perfect triple? 8, 10, 12. (2)Add -3/5+(8/35) (3).Which of the following are not like terms? (A)2b and 2b,(B)3c and 2c,(C)2b and 3b,(D)2b and 2c. Which number shown in parentheses is a soultion of the given equation? (A)1/3x+5=7 (6) (B)1/3x+5=...

**Math 115**

How do perform the indicated operation.15/13-13/15

**Math 115**

I need some help on 2 anwers 1)is the following set of numbers a perfect triple? 8, 10,and 12. 2)Which pair of fractions is proportional (A)0.6/0.3=?3/18,(B)0.6/0.3=?2.4,(C)0.6/0.3=?2.4/1.8, (D)0.6/0.3=?3/15

**Geomerty**

Place the following set of numbers in ascending order -2/9,5/9,1/8,-1/9,3/7 Would the correct order be 1/8,2/9,1/8,3/7,5/9

**Statistics**

The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of its archeological importance, Tara has received extensive study (Reference: Tara: An Archeological survey by Conor Newman, Royal Irish A...

**Statistics**

The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of its archeological importance, Tara has received extensive study (Reference: Tara: An Archeological survey by Conor Newman, Royal Irish A...

**social studies**

WHEBN I AM HUNGRY WHER CAN I GO TO GET HELP ? AND I DON'T MEAN KITCHEN .

**social studies**

WHEN I AM HUNGRY WHER CAN I GO TO GET HELP

**math (algebra).**

Graph the equation and identify the y-intercept. y= _1_ 3 x

**chemistry**

The correct interpretation of the equation below is: Fe3+(aq) + SCN–(aq) --> FeSCN2+(aq) A. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. B. The equilibrium constant is Kc = [Fe3+][SCN–][FeSCN2+] C. A heterogeneous equi...

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