Heres a bit of trivia

[bigguy]

If a hard drive spins a 10,000 rpm, How many times does it`s outer edge rotate every second.

 

[two4one]

accurately 166.66666666666666666666666666667 my calculator not going beyond that precision...lol

 

[deaddevil]

yes i agree with two4one

 

[bigguy]

yep ...ok, well that was an easy one. LOL

 

[majin3]

interesting question, I have another one though:

On a beach in Hawaii, there sits a small post sticking up out of the ground. The top of the pole is 80 cm from the ground. The water depth on this beach increases and decreases in a sinusoidal motion. The water depth is denoted by the equation d=40+60cos((pi/6)*t), where 't' is the number of hours after midnight. Let 'A' be the first value of t, t>0, to the nearest thousandth at which the water level just at the top of the post. Find the tenths digit of ln(A).

:nuke:

 

[bigguy]

yeah I`d say that was a bit harder. I suck at math so I`m not even going to attempt that LOL

 

[Corey]

I got lost at 't', that would be a good question for the trivia contest though

 

[bigguy]

yep it would ....I would lose on that one LOL

 

[majin3]

haha that's ok guys :fear: i'll post more problems soon!!!

 

[majin3]

hey you know what would be cool? if we kept posting problems and whoever would not be able to get the correct answer would have to increase the rep. bar of the person who originally posted the question!!!

 

[bigguy]

OK heres one more :

"what does CAS stand for"

a. cyclical adaptive services

b. column addressable stem

c. cycle adaptive stream

d. column address strobe
​

 

[Xempttt]

how did u come up witha question like this. y?

 

[two4one]

OK heres one more :

"what does CAS stand for"

a. cyclical adaptive services

b. column addressable stem

c. cycle adaptive stream

d. column address strobe
​

its Column address stobe right... ?

 

[two4one]

interesting question, I have another one though:

On a beach in Hawaii, there sits a small post sticking up out of the ground. The top of the pole is 80 cm from the ground. The water depth on this beach increases and decreases in a sinusoidal motion. The water depth is denoted by the equation d=40+60cos((pi/6)*t), where 't' is the number of hours after midnight. Let 'A' be the first value of t, t>0, to the nearest thousandth at which the water level just at the top of the post. Find the tenths digit of ln(A).

:nuke:

this is somewhat tough one for normal science students... unless he is familiar with physics and maths .....

i tried but failed.. i think in solving this we adopt sine wave functions and trigonometric equations in solving this mystery

 

[bigguy]

OK heres one more :

"what does CAS stand for"

a. cyclical adaptive services


b. column addressable stem

c. cycle adaptive stream

d. column address strobe

​

its Column address stobe right... ?

and you are correct that is what it stands for. That was another easy one LOL

 

[n4tec]

i like these trivia... My math is not that good...

*4*

 

[majin3]

actually, it is relatively simple. since you are given the equation and the height of the pole, we just need to find 't'. Since the question just states that the water height has to be 80cm to solve, using the equation, the water depth 'd' must equal 80cm. So, that would make the equation, 80cm=40+60cos((pi/6)*t). Now, we have to seperate 't' from the rest of the equation. So, (80cm-40)/(60)=cos((pi/6)*t). ((80cm-40)/(60)) equals (2/3). Therefore, (2/3)=cos((pi/6)*t). To get rid of the cosine ('cos' in the equation) we have to take the inverse of it. (This is the cos^(-1) key on your calculator.) And using basic algebra, you know that what you do to one side of the equal to sign, you also have to do to the other side. So, now the equation looks like (cos^(-1)[(2/3)])= (cos^(-1)[cos((pi/6)*t)]. wow, that is a lot of explaining. Anyways, Type (cos^(-1)[(2/3)]) into your calculator (you can do this on a scientific calculator.) and you will get something like: 48.18968511. (*Be sure that your calculator is in DEGREE mode unless you can directly convert radians*) 48.18968511= ((pi/6)*t) [cos^-1 and cos cancel on the right hand side]
now convert 48.189..... to radians (because (pi/6) is a radian angle) in order to convert degrees to radians, you have to multiply the degree measure by (pi/180) (that's just how it is done, dunno why) and you will get 48.189...*(pi/180)=.841066... now the equation reads 0.841066=((pi/6)*t). Therefore, t=0.841066/((pi/6)). that give the value of 't'. Now the value of t='A'. Type ln(A) into your calculator, and obtain the value of the tenths digit of the answer. THAT, my friends is your answer LOL!!!!! since none of you could answer, i think you should increase my rep. bar. If you can give me a problem that i can't solve, then i will increase your rep. bar. :chris: :nuke:
-majin3

interesting question, I have another one though:

On a beach in Hawaii, there sits a small post sticking up out of the ground. The top of the pole is 80 cm from the ground. The water depth on this beach increases and decreases in a sinusoidal motion. The water depth is denoted by the equation d=40+60cos((pi/6)*t), where 't' is the number of hours after midnight. Let 'A' be the first value of t, t>0, to the nearest thousandth at which the water level just at the top of the post. Find the tenths digit of ln(A).

:nuke:

this is somewhat tough one for normal science students... unless he is familiar with physics and maths .....

i tried but failed.. i think in solving this we adopt sine wave functions and trigonometric equations in solving this mystery

 

[Maurice]

And now in normal english please :noexpress :blink: nline2lo

 

[wly111]

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[ironcross77]

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