Tell us what the “mystery” check-off is on your progress chart. Feel free to work with others on this one!
Due at TA office at 11:59 pm MDT on July 27, 2017 A rope rests on two platforms which are both inclined at an angle θ (which you are free to pick), as shown. The rope has uniform mass density, and its coefficient of friction with the platforms is 1. The system has left-right... Continue Reading →
Due at TA office at 12:00 pm MDT (NOON) on July 27, 2017 For some odd reason, you decide to throw baseballs at a car of mass M, which is free to move frictionlessly on the ground. You throw the balls at the back of the car at speed u, and at a mass... Continue Reading →
Due at TA office at 11:59 pm MDT on July 23, 2017 You are trapped on a hill surrounded by a circular moat. In this moat lives a fearsome Hydra that sleeps only at the new moon! The hill has some shelter, ample dried food supplies, a bucket, and firewood, but no water anywhere... Continue Reading →
IMPORTANT - COMMUNICATION BETWEEN YOU AND YOUR CLASSMATES REGARDING THIS QOD IS NOT ALLOWED, IN ANY WAY, SHAPE, OR FORM. (NO LOOPHOLES PLEASE. THIS INCLUDES HAVING AN INTERMEDIARY PERSON TO RELAY INFORMATION, LOOKING THROUGH THE SUBMITTED QOD PILE, USING SEMAPHORE, TELEPATHY, SMOKE SIGNALS ETC.) Pick a number from 1 and 25. Multiply that... Continue Reading →
Due at TA office at 11:59 pm MDT on July 18, 2017 You are given two different ropes, each of which burns in one hour, but are not identical. Each rope has a non-constant burn rate. Given a match, how can you tell when 45 minutes have passed using only the ropes? (I.e. no... Continue Reading →
Scavenger Hunt time! Find all of the following things (and takes pictures of them) at some point during your field trip today! Send us a PowerPoint of your finds to firstname.lastname@example.org with the subject line “QOD 24”. You can work in groups of up to 3! Please include your group members in your email. ... Continue Reading →
Your TA Lindsey crash lands on an alien planet after years of space travel. As she attempts to look for her hydronuclear transponder, she comes across a two-headed Zorgon by a fork in the road. The two-headed Zorgon explains to her that one of its heads will always speak the truth, while the other head... Continue Reading →
This statement contains _ 0’s, _ 1’s, _ 2’s, _ 3’s, _ 4’s, _ 5’s, _ 6’s, _ 7’s, _ 8’s, and _ 9’s. Fill in the blanks with single digits (aka < 10) such that the statement is true! Bonus : Determine how many unique solutions exist, with proof. Bonus 2:... Continue Reading →
You’re a food critic and you have to write a review for your next publication. Write a review for the C4C. Your submission will be judged on entertainment value, so make us laugh!
How is 29 - 1 = 30? If also: 14 - 1 = 15 11 - 1 = 10 9 - 1 = 10
Due at TA office at 11:59 pm MDT on July 11, 2017 The four TAs went on a hike without all of you! Mwahaha! And they had lots of fun without you!! Anyways, they came across a large rock, and decided to climb up it. As the TAs climb the rock, a halo... Continue Reading →
Some basic probability questions! US Mint flavored! A)You are going on a tour of the US Mint! While waiting in line at the security desk, you see the guards partaking in their favorite past-time: flipping newly-minted coins! i) You are learn that one of the guards’ coins has landed heads. What is the probability... Continue Reading →
QOD #14 Due at TA Tavern at 11:59 pm MDT on July 9, 2017 Qcbufohizohwcbg, mci aobousr hc qfoqy hvwg qcrs! Hc ush qfsrwh tcf hvwg eisghwcb ct hvs rom, xigh gipawh o dwsqs ct dodsf kwhv mcif boas poqykofrg!
Dr. Dubson, Dr. Fu, and Laura are on a faculty retreat to Boulder Reservoir, where they have rented a rowboat. Once in the middle of the otherwise deserted lake, Laura decides to practice balancing on her unicycle (on the boat!) while Dr. D starts juggling bricks and Dr. Fu sips strawberry lemonade. Something with spines... Continue Reading →
Due at TA Office Dropbox at 11:59pm on Thursday, July 7 2017 Write a haiku about each of your two brilliant lecturers (Dr. Fu and Dr. Dubson). Haikus will be evaluated on their entertainment value and stylistic accuracy.
Due at TA Office Dropbox at 11:59pm on Wednesday, July 5, 2017 ... 30 33 36 39 42 46 52 60 110 132 222 1120 ?? Bonus: Write the number that comes before 30.
Due at TA Office at 11:59 pm MDT on July 6, 2017 Given the long hours of your typical day at SSP, the CU Boulder Psychology Department wishes to perform experiments on you regarding your ability to think rationally about probability in a sleep-deprived state. Being eager scientists, you have all gladly accepted! Here are... Continue Reading →
July 5, 2017 - 30, 33, 36, 39, 42, 46, 52, 60, 110, 132, 222, 1120, ??