Coffee Definition and 164 Threads

Recently, I have noticed that essentially everyone I know regularly drinks coffee. I have never drank coffee and I just find this an interesting historical trend. A lot of the people I know seem to drink in the fashion of Paul Erdos's famous quote: "A mathematician is a machine for turning...

I am looking for a good coffee bean to use, and as i have never had make it your self coffee i have no idea what to buy, so what is good without being crazy expensive?

Coffee Machine Desgin help PLEASE! Hey Everyone, Not sure if this is where I can post this topic. I have a project in class to design a 10cent coffee machine. We just have to create the truth table, write the SOP form. Draw the circuit on @ltera and program the CPLD. I am having trouble...

Homework Statement A customer slides an empty coffee mug down the counter. The employee is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor 1.9m from the base of the counter. The height of the counter is .840m. a. With what velocity did...

Hi all, I'm currently working on a lab on thermal physics, and I'm investigating whether adding different amounts of sugar is able to maintain the temperature of a cup of coffee, i.e. keep the coffee hot. I have collected my results, and it turns out that more sugar keeps the coffee hot...

Have you guys seen the Indian Thriller video? OMG.

Hi ! Can anyone help me I need help ... Problem : ************************************************** ********************** 1- A coffee cup on the dashboard of a car slides forward on the dash when the driver decelerates from 40 km/h to rest in 3.5 s or less, but not if he decelerates in a...

Recently I bought a bag of coffee beans from abroad on a plane, now the bag is very inflated. I want to take the bag on a plane again, would it burst?

I'm just wondering about this, because when I drink coffee, sometimes I feel like I can't focus. Is it possible that drinking coffee will limit my ability to grasp mathematical concepts? What is recommended for helping me to get focused? I guess exercise is good, and maybe antioxidents...

1. I'm doing a lab with a coffee can rolling down a ramp. I'm asked to 'determine average torque' acting on the can while its rolling down the ramp. Then I'm asked to compare this value with I*alpha (angular acceleration) (I'm guessing because torque = I*alpha). So I need to calculate torque...

Homework Statement You drop a single coffee filter of mass 1.2 grams from a very tall building, and it takes 47 seconds to reach the ground. In a small fraction of that time the coffee filter reached terminal speed. (a) What was the upward force of the air resistance while the coffee...

You drop a single coffee filter of mass 1.4 grams from a very tall building, and it takes 47 seconds to reach the ground. In a small fraction of that time the coffee filter reached terminal speed. (a) What was the upward force of the air resistance while the coffee filter was falling at...

I found this on the internet and was wondering if there was an easier way to extract the caffeine from coffee because this takes more time and equipment than i care to use is there any way i could do this at room pressure because last time i worked with pressurized stuff a seal broke and it shot...

I had a glass coffee table, it was 12mm thick (approx 1/2 ") I had this table for approx 5 months when one night, it just gave off a bange and collapsed (I wasn't in the process of placing anything on it, etc, it had no chips). Some small fragments were embeded into my wife and my hands. The...

Homework Statement hi, i have a lab for thermal physics in which the cooling of coffee is monitored. The variable change is the amount of milk that is added once the coffee is brewed. My question is whether there is an equation that relates heat exchange between 2 liquids in a solution? (an...

It doesn't matter if it comes in the form of whole beans, ground beans, or instant coffee. What is your favourite coffee? Briefly describe what makes it so good :biggrin:. I have been drinking nescafe taster's choice for quite a while now and it is probably one of the best instant...

ok, this has me confused... everywhere I read I find completely different info. Some places say that coffee is bad for the heart, then there are studies last year that said that it was good for the heart... does anyone know which one it is? what about for blood pressure? I drink anywhere...

I have never heard of this happening to anyone before but everytime i drink coffee lately i have been getting extremely sick. WHAT KIND OF SICK JOKE IS THIS! I love coffee and now I can't drink it...evilness! :grumpy This is going to put me in a bad mood for awhile...good thing i like tea...so...

Homework Statement A coffee cup calorimeter can be used to investigate the process that occurs when solid ammonium nitrate dissolves in water: NH4NO3 (s) --> NH4+ (aq) + NO3 – (aq) 25.0 g of solid NH4NO3 at 23.0 degrees C is added to 250.0 mL of H2O at the same temperature...

Homework Statement An insulated Thermos contains 110 cm3 of hot coffee at 87.0°C. You put in a 15.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted? Treat the coffee as though it were pure water and neglect...

I have a question involving putting an ice cube in a thermos of coffee. I used c_{ice}m_{ice}(T_f-T_i) + c_{coffee}m_{coffee}(T_f-T_i)=0. Is this right? If so wouldn't the temperatures of the ice remain constant until it is all gone?It says that the ice is at 0'C.

[b]1. A 0.342- kg coffee mug rests on a table top 0.67 m above the floor. What is the potential energy of the mug with respect to the floor? Answer: 2.25J B. What is its potential energy with respect to a counter top 1.1 m above the floor? Answer:? Homework Equations P.E.=mgh The...

Question: When you walk with a cup of coffee (diameter 8cm) at just the right pace of about 1 step per second, the coffee sloshes more and more until eventually it starts to spill over the top. Estimate the speed of the waves of the coffee. Relevant Formulae: f= 1/T v= f * wavelength...

I don't know which mentor to address this question to so I'm trying it here. After I have stirred my coffee I always tap the spoon on the lip of the cup. As I do so the pitch keeps rising until the coffee is no longer moving. I've been curious about this for years and hope somebody can answer...

Coffee drains from a conical filter, with diameter of 15cm and a height of 15 cm into a cylindrical coffee pot, with a diameter of 15 cm at 2 cm^2/ sec. At a certain time, the coffee in the filter is 13 cm deep. a) How fast is the depth of coffee in the filter changing at that time? b) How...

[SOLVED] Is there potassium in coffee can the presence of potassium be determined with a chemical test? if so how? If potassium is heated in a bunsen burner flame , would the flame be yellow?

Yes 2 on one side and 2 on tother, the denist (sexy lady) gave me a right rolliking about eating sweet stuff and cleaning my teeth proper, thing is i do not like sweet stuff, and all ways clean my teeth with a high fluoride tooth paste, and now i have coffee all down my best shirt :mad: :mad: :mad:

I have a few questions for you. 1. Does coffee help you keep being awake? 2. How unhealthy is a cup of coffee? 3. How do you like coffee's taste? 4. How frequently do you drink coffee? 5. Have you ever functioned without getting a sleep? - awake by more than 36-48 hours? 6. If yes, how was...

This guy was telling me that fast food places serve 1/2 gallon cups of coffee in the US, i am sure he is pulling my leg as anyone would bust their bladder drinking that much.

This is the hardest brain teaser I could think of: ---------------- The solid angle of coffee is quite complicated. It involves some kind of resistance to change, and the density parameter for the brightness of stars is suprisingly inadequate. Unlike most people think, standard angular...

Few minutes ago I started a pot of coffee. The coffee maker makes deep sputtery noises. I walked into the other room for a second and suddenly heard what sounded like a kind of demon voice grumbling my first name. Got chills for a second till I realized it was a trick of the accoustics here...

One of the things i love to do at night is drink some coffee and work on some computer program or interesting problem. Coffee has a really strong effect on me. I can just think that much more clearly when I'm "under the influence" than when I'm not because I'm much more focused. The problem is...

...for tomorrow. The fumes were awful, I never realized how terrible coffee smells (I had noticed the taste). Fortunately I don't intend to drink any more today. It's very useful to make coffee for your self in the future, that way you don't have to bother with it first thing in the morning...

It's Good for you!

If I stir cream into my coffee, what prevents me from stirring counter-clockwise, and the cream seperating again?

Speed of waves in a cup of coffee that spills over, help please! "When you walk with a cup of coffee (diameter 9 cm) at just the right pace of about 1 step per second, the coffee builds up its "sloshing" until eventually, after a few steps, it starts to spill over the top. What is the speed of...

How much energy would it be necessary for me to compress my coffee mug into a black hole? Would i need less energy for an object with a fraction of the size of my coffee mug? How much energy would i need to collapse a single atom into a black hole, or is that not possible, and is a lot of matter...

i was wonderin in there was an eaisy way to extract caffeine from coffee or tea. i read aroun and there was 3 methods of doing this one of which involved water, but I am not too sure how i can get the caffine by it self? can anyone give me a step-by-step? thanks phr

Hi I was reading an article in the New Scientist, about how fusion can be created in a device no bigger than a coffee cup. It said that an electrically polarised piece of deuterium doped lithium tantilate (don't know if this is the right spelling) placed in a strong electomagnetic field...

Your coffee, that is. :smile: Check all that apply. I was going to add more, but 10 is the limit. So... Species: Arabica Robusta Other Roast: Light Medium Dark Body: Heavy/Full Medium Light/Thin Acidity: Tart Sharp Clean Bright Aroma: Floral Woody Nutty Spicy Brew...

So, I was recently informed that I make crappy coffee. :cry: We buy the Millstone French Roast and grind the beans, and the flavor is good, but after checking around a bit I decided that my know it all, X-hippy, artsy fartsy customer [really he's my good buddy but I know he checks in here from...

the title says it all...

Hola muchachos, I'm not addicted to coffee yet, but man, I sure do like the taste. I don't drink it regularly, but mainly because on weekdays I rarely have enough time in the morning to make coffee for myself. Once I get into College, I can see myself easily becoming addicted to coffee...

I was finishing my chamomile tea...which was very yummy :biggrin:. As I finished the last swallow, I wondered if chamomile has any health benefits to it. Ironically I was wondering the same thing about green tea (also very yummy... :wink: ). How is that tea has some components in it that provide...

I was wondering; can drinking coffee be good for you?

this was in a quiz i did ages ago and i never found out the answer. someone makes 2 cups of coffee. Cup 1 has coffee then water then milk added and is left to stand for 15mins. Cup 2 has coffee then water added then is left to stand for 15 mins, then milk is added. which one would be hottest...

A cup of coffee at 174 degrees is poured into a mug and left in a room at 76 degrees. After 5 minutes, the coffee is 134 degrees. Assume that the differential equation describing Newton's Law of Cooling is (in this case) dT/dt = k(T-76) here's what i done: y(0) = 98e^{kt} y(5) = 134-76...

Here's the question: I used Q=mc (delta)T. So Q + Q = 0. I put the properties of the coffee in one and the properties of the glass in another. Since I couldn't find a specific heat for coffee I just used that of water (I figure they're pretty similar?)... Anyway, for my final answer u...

hot coffee! i went with my friend and his wife to the coffee shop. the coffee was brought when my friend's wife was in the wash room. it was steaming hot while the milk was cold.we mixed the coffee and milk and started drinking. (considering the fact that i prefer my coffee without milk, take...

Youri takes a coffee and adds some milk at room temperature to it. Saku takes a black coffee and adds the same amount of milk but 10 minutes later. Which coffee is the hotter and why? I think that Youri's coffee would be hotter since the temperature variation is proportional to the...