Physics
Chemistry
Math
Riddles
Common Sense
100
Q: Newton's Third Law of Motion
A: For every action, there is an equal and opposite reaction
100
Q: The chemical name for water
A: Hydrogen Monoxide (H2O) or Dihydrogen Monoxide (H2O)
100
Q: If tan(x) = y/5
What is sin(x) ?
sin(x) =
100
Q: “What is the creature that walks on four legs in the morning, two legs at noon, and three in the evening?”
A: Man's not hot
100
Q: Do they have a 4th of July in Great Britain?
A: Yes, of course they do - they use the same calendar, they just don't celebrate it the way it is celebrated in the USA.
200
Q: Momentum is found by multiplying the ____ and ____ of an object
A: velocity and mass
200
Q: On this scale, battery acid is listed as a 1, and liquid drain cleaner as a 14
A: The pH scale
200
Find the cross product:
( 1i + 2j + 3k ) x ( 4i - 5j - 6k) =
3i + 18j -13k
200
Q: What is so delicate that saying its name breaks it?
A: Silence
200
Q: A plane crashes on the border of Canada and the USA, 60 people die. Where do they bury the survivors?
(a) Canada (b) Split 50/50
(c) USA (d) Neither
A: Neither, you don't bury survivors!
300
Q:The resistance of any physical object to any change in its state of motion
A: Inertia
300
Q: Name three of the six recognized noble gases
A:
Helium (He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenon (Xe)
Radon (Rn)
300
Q: If the polynomial x5-1=0 can be factored into the form:
(x-1)(x-a)(x-b)(x-a*)(x-b*)=0 where * is complex conjugate operation.
What is the value of (1+a+a*+b+b*)?
A: (1+a+a*+b+b*)=0
300
Q: It’s shorter than the rest, but when you’re happy, you raise it up like it’s the best. What is it?
Thumb
300
Q: “If a doctor gives you three pills with instructions to take one every half hour, when will you take the last one?”
Q: One hour later!
You take the first pill, wait 30 minutes and take the second one. Thirty minutes more and you take the third one.
400
Q: The amount of power required to overcome aerodynamic drag at 2*v, if 10 horsepower is required to overcome aerodynamic drag at velocity v
A: 80 Horsepower
400
Q: Organic chemistry is primarily the study of compounds containing this element.
A: Carbon (C)
400
Q: Find: Int[cos(x)*(1+sin2(x))]
A: Int[y(x)]=sin(x)+1/3sin3(x)+C
400
Q: When it comes to me, you go on red and stop on green. What am I?
A: Watermelon 
400
Q: Assume you have an old fashioned analog alarm clock. If it is currently 6 pm and you want to wake up at 7 am tomorrow and you set your clock accordingly. The clock will go off 13 hours later. True or False?
A: False, with an analog clock, there is no way to differentiate between AM and PM, so the clock will go off 1 hour later.
500
Q: A motorist traveling at 10m/s was able to bring his car to rest in a distance of 10m. If he had been traveling at 30m/s, in what distance could he bring his cart to rest using the same breaking force?
A: 90 Meters
500
Q: This halogen element has the highest electron affinity.
A: Fluorine (F)
500
Q: The sum of the area of the purple squares:
A: Total Area = 1/3
(Geometric Series)
500
Q:
I am a five-letter word. I sound the same when you remove my first letter. I sound the same when you remove my third letter. I sound the same when you remove my last letter. I sound the same when you remove my first, third, and last letter.
Which word am I?
A:
Empty,
mpty,
emty,
emp-t,
m t.
500
Q: A man looks at a portrait and says, "Brothers and sisters, I have none. But that man's father is my father's son." Who am I?
A: That man's father is the grandfather. Therefore, I am the son of the grandfather.