Quiz Definition and 168 Threads

Let us consider the photoelectric effect described on http://hyperphysics.phy-astr.gsu.edu/hbase/mod1.html/" . A photon has an energy of 2.25 eV and produces a photoelectron effect on a potassium target, the maximum energy of the photoelectron is 0.50 eV, indicating the photoelectric...

Dear all, Let us consider a closed waveguide, or a closed fiberoptic or more simply a perfectly conducting box. Assume there are no wall losses or dissipation in this system. Let us consider 2 versions of this system: System 1) the box is empty System 2) the box contains a huge...

Let me start a Quiz based on c++ programming in this thread. You are requested to give the right answer in quotes; RULE: No special rules are there.Anyway, >>The person who tells the right answer must post the next question,No one must post Q's in between. The person who answers must post a...

I'm an artist, currently researching the four stomachs of a cow for my sculpture project. As part of my finished piece I wish to incorperate the seasons of the year. Four seasons and four stomachs would fit together nicely. If there happens to be some kind of real connection it would benifit...

I.ESSAY QUESTIONS 1.What us the difference between static equilibrium and dynamic equilibrium? Explain your answer fully. 2.State and explain and the conditions for translational equilibrium. 3.What horizontal forces act on a car traveling westward on a level road at a constant speed of...

we have a sequence {a_n}, such that for every n natural, a_n>0 and it satisfies: lim (a_n*a_n+1)=1 prove/disprove: if {a_n} is bounded then {a_2n} converges. i haven't found any counter example, is this statement true or false, if is false then what's the counter example? p.s couldn't...

Do you think you followed all the major physics news of the year? If you think you do, take this quiz and see how much you know. This is NOT an easy quiz by any stretch of the imagination. http://physicsweb.org/articles/world/19/12/1/1 Zz.

Einstein wrote this quiz last century. He said that 98% of the people in the world cannot solve the quiz. * There are 5 houses in 5 different colors * In each house lives a person with a different nationality * These 5 owners drink a certain type of beverage, smoke a certain...

Here is a quiz to test PF's knowledge about Norway and famous Norwegians! :smile: 1) At the age of 12, his daddy Halfdan the Black ridiculed him for being a mere "boy" in front of his men. As revenge, this precocious youngster plotted with a Finn well versed in magic to melt the ice on the...

1) What is the full (real life) name of the current pope 2) When pirates capture you you can call for "parler". What does this mean ? 3) Of which country both the current president and the prime minister are twin brothers? 4) Who was the first prime minister of Isreal ? 5) "When you...

"John" the stair-slider was recently photographed sliding down a staircase. He has a mass of 98.0 kg when sitting on a carpet lubed up on the bottom with a kg of butter. The staircase is 8.2 meters long and makes an angle of 43 degrees with the horizontal. The butter reduces his frictional force...

Ok, math, not vocabulary. http://www.queendom.com/mindgames/mindstretching/mindtoys/mt-quiz14.html

Here's an easy one to get us started. http://www.queendom.com/mindgames/quizdom/quiz9.html Results of your quiz You answered correctly 10 out of 10 questions. This is equivalent to 100 %. Your grade is A+

Heres a problem on a take home quiz I am doing, but i can't figure out how to get past the first step?! The density of helium gas at 0°C is 0.179 kg/m^3. The temperature is then raised to 100°C, but the pressure is kept constant. Assuming that Helium is an ideal gas, calculate the new density...

A tech fest is fast approaching in my university, and as part of the run up, a couple of my friends made a nice trivia quiz, which concluded yesterday. So, here it is. Feel free to google and remember to hide your answers using [ color=#black] 1. Identify the person in the picture. (Hint: He...

1 .city in Ukraine that was the cite in 1709 of the battle_________ between Russia and Sweden. 7 letters. 2. Member of a native American people inhabiting the south western US and N Mexico. 6 letters. 3. The _____ _____, novel by Dashiell Hammett whos central characters are Nick and Nora...

If the quiz is too easy, I hope, at least, that it's interesting. One anwer per person. 1. According to the Walrus, Who was the Walrus? Back up your answer. 2. Which John song was inspired by an easy high rider? 3. Inspiration for the title of a song that Paul wrote as a piano exercise...

"Things in the sky" quiz All right boys and girls, here's an easy quiz to get started. Let's sharpen up those pointy heads. Please do not google the answers, these are easy enough and it's multiple choice. If I could get them right without googling, so can you. Please answer in...

Near the top of this web page, there is a link to a quiz. If you take the Novice quiz called "Beginning Physics", you will find an error in question 4: Question: A cyclist changes velocity from 5 m/sec [N] to 15 m/sec [N] in 4.0 sec. What is the value of her acceleration? a) 2.5 m/sec b)...

An electron in motion carries a magnetic field ... Quiz question:-- 1. Does its magnetic field travel fixed to the electron, and is therefor a -moving- magnetic field and induces an electrostatic potential in a perpendicular wire reaching-but-not-preventing the electron...? 2. If not...

hello everyone. I'm studying for the exam now and I understand if a wave is moving in the negative x direction to the left, the value infront of the x should be positve. But you see where he took off -1/2, because i wrote down m/s? Do you know why? its v^2, i thought that just means take the...

i have this question that i couldn't get but it's on this quiz i have tommorow. A 600-kg jet car accelerates from rest under the force of its jet engine. After traveling 1.00 km in 21.0s, the jet engine shuts off and the jet car eventually comes to a rest at 1.4 km further down the track...

Answer in white. I will post the answers after enough people have a chance to play. There are some interesting discussion notes with the answers. I'll award 5 points per correct answer since we may not have anyone get them all correct. 1. Cathy has six pairs of black gloves and six pairs...

I posted this in a newbie thread and no one has gotten it. Come on, I know there are members out there that know this stuff. This is a PF scavenger hunt. You can search PF for the answers if you don't already know them. I'll bet BobG nails this one. 1) What did tribdog do to his...

i had a test and i got a 55 can someone show me how to do these with the steps if possibleverify each of the folloring trigonomic identities 1) 2sin^2x - 1/sinx-cosx = sinx+cosx* did my steps wrong 2) cot^2x-cos^2x = cos^2xcot^2x didnt get an answer <no clue how to do simplify 1)...

Forget about the prize, here's something to keep us all entertained over the festive season! http://www.xfm.co.uk/Article.asp?b=reviews&id=154331 Name the artist and album corresponding to these snippets of album artwork! So far I've got: sex pistols - never mind the bollocks...

The famous Einstein quiz: Einstein said that 98% of the people in the world cannot solve his riddle. Facts: 1: There are 5 houses in 5 different colors 2: In each house lives a person with a different nationality. 3: These 5 owners drink a certain beverage, smoke a certain brand of...

11. a football player runs the pattern given in the drawing by three displacements vectors a b and c the magnitutdes of the vectors are a=5m b=15m and c = 18m find the magnitude and direction of the resultant displacement wtf how do i do that don't i need a direction or somthing what is...

Maybe this should go in GD? I don't know. http://www.csmonitor.com/specials/neocon/quiz/neoconQuiz.html Turns out I'm a liberal. How 'bout you?

Hi, I'm not sure how to tackle this quiz question I came across : Let P(n) be the number of ways of writing a natural number n as the sum of smaller natural numbers eg. P(4)=5 as 4=4=3+1=2+2=2+1+1=1+1+1+1 I must show that the sigma P(n) = 1/(1-x)*1/(1-x^2)*1/(1-x^3)...

I just took the relativity quiz here: https://www.physicsforums.com/quiz.php?quizid=28 and I goofed on question 10. Could someone explain it to me? Below I've posted what the review of the quiz said about question 10 along with some of the previous questions for context. This seems to...

Hi, I am looking for some interesting (multiple choices type) quiz questions that are related to biology. The quiz participants include mostly recent college graduates of diverse background from biology to engineering to mathematics. The audience also come from diverse background. In general...

I just got my quiz back and i bombed it, and my teacher neglected going through it, hoping you guys could help me out with it 1) Find the canonical basis for the solution space of the homogeneous system, and state the dimension of the space. 3x1 + x2 + x3 + x4 = 0 5x1 - x2 + x3 - x4 = 0...

This is found in many places on the web. 1. How long did the Hundred Years War last? 2. Which country makes Panama hats? 3. From which animal do we get catgut? 4. In which month do Russians celebrate the October Revolution? 5. What is a camel's hair brush made of? 6. The Canary...

I was wondering if anyone would be willing to walk me through a few problems to help prepare me for a quiz tomorrow over Coulomb's law. It'd be of great appreciation if anyone would/could help me! The first problem: Betelgeuse, one of the brightest stars in the constellation of Orion, has...

No googling for answers! 1. The vomited concretion of a certain aquatic mammal was once prized for doing what? What is it called? Answered in post 19 2. What creature can taste with it’s feet? Answered in post 32 3. What native African animal can go without drinking water longer...

I proposed this problem on a thread in the homework section.I honestly do not know the answer... "Compute \sin\frac{\pi}{5} using trigonometry and algebra only." Daniel.

Now, please give me 5 math problems and I'll solve them by next monday or ELSE!

A train is moving to the right at v=.5c. Someone standing on the train throws a baseball forward (to the right) at u'=.99c (relative to him). Relative to somone on the ground, the ball appears to be traveling at a speed u which is slightly faster than .99c, but still less than c. What if the...

If you find the others too long, try this one : http://www.self-gov.org/quiz.html I'm on the liberal border of the centrist square.

simple I think not - my son has homework/quiz for fun - try to make numbers from 1 to 50 using the numbers 2,5,1,2 (xmas date)- I think all of them must be used. for example 25+21=46 (5+1)2-2=34 five plus one squared minus two equals 34 15x2+2=32 weve got some we can't do even...

URGENT what's RCS what is RCS supposed to mean in physics, i have a quiz tommorow with that as a bonus question, i know it has something to do with angles...

I have a couple questions about some problems on a take-home quiz that I got (no calculator allowed) Bear with me, this post is long... 1. The radius (r) of a sphere is increasing at a constant rate of 0.04 cm/s. (Note: The volume of a sphere with radius r is V=4/3pir³ a) At the time when...

I'm going to muscle my way in on the quiz action with the following quiz about the island of Great Britian (hopefully not too hard): 1) What is the name of the archetypal country gent, often depicted as wearing a waistcoat with the Union Jack emblazoned on it, used to represent England in...

Same rules. One answer per customer. Try to be honest and supply your answer without simply looking it up somewhere. Rely on your own knowledge. QUESTIONS 1) Respected and admired by both the Germans and their enemies as an honourable and clever commander, Captain Langsdorff was the...

I thought I'd try my hand at writing up a little quiz. Same rules. One answer per customer. Try to be honest and supply your answer without simply looking it up somewhere. Rely on your own knowledge. QUESTIONS 1) Who led the Spartans at Thermopolae? 2) What is the voltage drop of an...

Mystery : Myth & History - yet another trivia quiz This is advance warning that I'll put up the actual quiz here in about a day. Also, I'd like to dedicate this quiz to Ivan Seeking and Evo, the irreplaceable Guardians of the PF Lounge. < hope I chose the theme wisely >

Word Origins : [Warning : Some material here may be objectionable to minors ] RULES : 1. No Googling 2. IMPORTANT : Each person is allowed to guess only ONE answer (ONE answer total; not one per question)...unless I inform you otherwise. Please read the rules again...thank you...

Okay folks, the rules first (and please read them)... RULES : 1. No Googling - spoils the fun. 2. Each person gets to attempt only one question, so take your pick. At some point, I may (not likely) announce a free-for-all, whence all questions become open to everyone. The idea behind...

Hey guys A lot of my classes this semester (parastiology, cell biology, ecology) are a lot of definitions that I need to have nailed down solid. I'm looking for a little definitions quiz program that I can use, I'd like to be able to enter the word and definition and have it ask my...