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Re: The Educative Game by biolabee(m): 9:58pm On Nov 16, 2008
apocalypse:


@ fustina

I'll go with d , might as well admit that am ignorant of it

i go with the apocalypse on this,
spikedcylinder:

Correct.
Any two numbers next to each other will consist of an odd number and an even number. The sum of an odd number and an even number is always odd.


spiked, the q is not complete,,,,  there are 11 numbers if the numbers are paired up there will be one more number.

morenike im fine tx
Re: The Educative Game by spikedcylinder: 11:32am On Nov 17, 2008
An elf wrote the numbers 5 through 15 in a straight line. On adding any two numbers next to each other, the elf found the sum to be an odd number.

True or False?

That was the question

Correct.
Any two numbers next to each other will consist of an odd number and an even number. The sum of an odd number and an even number is always odd.

And that was the answer.


What part did you not get biolabee?
Re: The Educative Game by Nobody: 11:49am On Nov 17, 2008
@spike

There was this thread I made a few remarks which were , to say the least , derogatory but am happy you have taken it in good stride.

can you believe that I was actually waiting for your location to load. shocked shocked shocked
Re: The Educative Game by victor1(m): 9:40pm On Nov 17, 2008
Barrier constructed across a stream or river to hold water and raise its level is called?

a. Bridge

b. Lighthouse

c. Dam

d. Levee

Please does a bridge hold water and raise its level?
Re: The Educative Game by victor1(m): 9:42pm On Nov 17, 2008
The second question asked. the answer should be a dam.
Re: The Educative Game by RichyBlacK(m): 11:18pm On Nov 17, 2008
If f(0) = -1 and f(1) = 2, what is f(x)?

A. 2x

B. 2x - 1

C. (1/2)*2x

D. 3x - 1

E. -2x
Re: The Educative Game by DarkRxn(f): 12:08am On Nov 18, 2008
D. . . .right? grin
Re: The Educative Game by RichyBlacK(m): 12:22am On Nov 18, 2008
Dark_Rxn:

D. . . .right? grin

Correct!
Re: The Educative Game by RichyBlacK(m): 12:35am On Nov 18, 2008
Let,
I = increase
D = decrease
C = remain constant.
So, x=I,D,C means x increases, then remains constant and finally decreases.

Einstein's theory of relativity tells us that nothing can travel faster than the speed of light. From Newton's laws of motion, we know that applying a force F to a body of mass m will increase the acceleration a of the body. Imagine a situation where we apply a sustained amount of force on a given body.


Question 1:
Using the IDC notation given above, explain the effect of this sustained application of force on the body's mass m and acceleration a, given that the body is initially at rest.


Example solutions:
i. m=C and a=D implies that mass remains constant and acceleration decreases

ii. m=D,I,C and a=I,C implies that mass decreases, then increases and finally remains constant and acceleration increases and then remains constant.


Question 2:
Based on the IDC notation given above, what is the total possible number of explanations of the behavior of the body's mass m and acceleration a?
Re: The Educative Game by DarkRxn(f): 12:57am On Nov 18, 2008
R.B, will answer you later tongue

Elos Agos:

Answer is B. STROMA
Wrong! tongue
Light Rxn takes place in the thylakoids.
Dark Rxn takes place in the stroma wink
Re: The Educative Game by biolabee(m): 6:36pm On Nov 18, 2008
spikedcylinder:

That was the question

And that was the answer.


What part did you not get biolabee?


5n6 = 11 7n8 = 15 9n10 = 19 11n12 = 23 13n14 = 27 theres one number left 15?



richy

1)a = I,C

2) a) a = 0 the force is not enuff
` b) a = I,C increase from 0 and stay constant (inertia)
c) a = D decelerations occurs steadily
Re: The Educative Game by RichyBlacK(m): 6:59pm On Nov 18, 2008
biolabee:

5n6 = 11 7n8 = 15 9n10 = 19 11n12 = 23 13n14 = 27 theres one number left 15?



richy

1)a = I,C


a = I,C means acceleration increases and then remains constant.

This description for the acceleration is incorrect. In addition, you didn't outline a solution for mass, m, e.g. m = C which means mass will remain constant.


2) a) a = 0 the force is not enough
`   b) a = I,C increase from 0 and stay constant (inertia)
     c) a = D decelerations occurs steadily

You outline three possible solutions.

The number of possible solutions is much greater than that. Also, you didn't give any description for the mass m. There has to be a description for both acceleration and mass.

Good attempts!
Re: The Educative Game by Phemour: 2:32pm On Nov 19, 2008
Re: The Educative Game by RichyBlacK(m): 4:39pm On Nov 19, 2008
PHEMOUR:



I know grin. I'll post the solution later today. I hope someone will give a correct solution by then.
Re: The Educative Game by RichyBlacK(m): 4:49pm On Nov 19, 2008
RichyBlacK:

Let,
I = increase
D = decrease
C = remain constant.
So, x=I,D,C means x increases, then remains constant and finally decreases.

Einstein's theory of relativity tells us that nothing can travel faster than the speed of light. From Newton's laws of motion, we know that applying a force F to a body of mass m will increase the acceleration a of the body. Imagine a situation where we apply a sustained amount of force on a given body.


Question 1:
Using the IDC notation given above, explain the effect of this sustained application of force on the body's mass m and acceleration a, given that the body is initially at rest.


Example solutions:
i. m=C and a=D implies that mass remains constant and acceleration decreases

ii. m=D,I,C and a=I,C implies that mass decreases, then increases and finally remains constant and acceleration increases and then remains constant.


Question 2:
Based on the IDC notation given above, what is the total possible number of explanations of the behavior of the body's mass m and acceleration a?




Restrict the length of the explanation to three. So the following are valid explanations:
i. m = I,D and a = D,I,C
ii. m = I,C,D and a = C

Explanations of length greater than 3 are not valid, e.g.:
i. m = I,D,C,D,I and a = I,C,D,I
ii. m = D,I,D,I and a = D,C,D,I,C

This hint decreases the size of the set of possible explanations. Without restricting the length, the size of the set of all possible explanations using the IDC notation above would be infinite!
Re: The Educative Game by DavidDylan(m): 4:50pm On Nov 19, 2008
Richy don come with his hopelessly difficult math questions.
Re: The Educative Game by spikedcylinder: 4:56pm On Nov 19, 2008
apocalypse:


@spike

There was this thread I made a few remarks which were , to say the least , derogatory but am happy you have taken it in good stride.

can you believe that I was actually waiting for your location to load. shocked shocked shocked

Ah! I don't take anything on here seriously o. . . grin grin

You were waiting for it to load? shocked grin lipsrsealed
Re: The Educative Game by spikedcylinder: 5:03pm On Nov 19, 2008
biolabee:

5n6 = 11 7n8 = 15 9n10 = 19 11n12 = 23 13n14 = 27 theres one number left 15?


I didn't ask you to pair up the numbers. I only asked if on adding any two numbers next to each other, your resulting answer would be an odd number. Read the question well o. tongue
Re: The Educative Game by RichyBlacK(m): 5:06pm On Nov 19, 2008
DavidDylan:

Richy don come with his hopelessly difficult math questions.

David, you dey craze o! grin

But really, it's not that hard. Q1 is physics and Q2 is combinatorics (math).


More hints:

Assume F = ma (Newton's second law of motion)

So, whatever happens we want F to remain constant (very useful hint).

Using classical (Newtonian) physics, the solution is m = C and a = C.


But constant acceleration guarantees that the velocity will ultimately exceed the speed of light, which goes against the theory of relativity.
Re: The Educative Game by spikedcylinder: 5:16pm On Nov 19, 2008
There are 13 balloons in the red box, 39 balloons in the blue box, 25 balloons in the green box, and 50 balloons in the yellow box, children can decorate a party room for Christmas with 114 balloons from only three boxes.

True or False?
Re: The Educative Game by RichyBlacK(m): 5:39pm On Nov 19, 2008
spikedcylinder:

There are 13 balloons in the red box, 39 balloons in the blue box, 25 balloons in the green box, and 50 balloons in the yellow box, children can decorate a party room for Christmas with 114 balloons from only three boxes.   

True or False?

True, from the blue, green and yellow boxes (39 + 25 + 50 = 114).
Re: The Educative Game by spikedcylinder: 6:01pm On Nov 19, 2008
RichyBlacK:

True, from the blue, green and yellow boxes (39 + 25 + 50 = 114).

Correct.

No balloons are needed from the red box.
Re: The Educative Game by biolabee(m): 10:41pm On Nov 19, 2008
spiky i don hear
Re: The Educative Game by RichyBlacK(m): 11:20pm On Nov 20, 2008
RichyBlacK:

I know  grin. I'll post the solution later today. I hope someone will give a correct solution by then.

Solution

Q1

F = ma (Newton's 2nd law).

Applied force F is constant (given).

Initial velocity v of the body = 0 (given; body at rest).

Sustained F implies constant acceleration.

Constant acceleration increases v, the body's velocity.

From theory of relativity, the body's velocity v cannot be greater than the speed of light c.

So, v increase and asymptotically reaches c.

As v approaches c, the body's acceleration decreases and approaches zero (recall that at constant speed, acceleration is zero).

If applied force is sustained and the acceleration begins to decrease (so that v respects the bound placed by the speed of light), then the relativity theory predicts that the mass of the body increases!

Theoretically, if the speed of the body reaches the speed of light and remains constant at that speed, then the body will possess infinite mass! Also, at such a speed the body acquires the properties of a wave.

Solution: m = C,I and a = C,D  (if body does not reach the speed of light; this is the more likely scenario)
Re: The Educative Game by RichyBlacK(m): 12:31am On Nov 21, 2008
Q2

All possible explanations for mass m:

1. C
2. D
3. I
4. C,D
5. C,I
6. D,C
7. D,I
8. I,C
9. I,D
10. D,C,D
11. D,C,I
12. D,I,D
13. D,I,C
14. I,C,D
15. I,C,I
16. I,D,C
17. I,D,I
18. C,D,I
19. C,D,C
20. C,I,D
21. C,I,C


So, the number of possible explanations = 21 x 21 = 441
Re: The Educative Game by Gamine(f): 4:54pm On Nov 23, 2008
What Colour is the Amoeba?

A, Black

B, Brown
Re: The Educative Game by biolabee(m): 5:10pm On Nov 23, 2008
i think brown

gamine nice profile pix
Re: The Educative Game by Gamine(f): 5:37pm On Nov 23, 2008
You are still thinking! shocked

gamine nice profile pix

Thanks embarassed
Re: The Educative Game by ayobase(m): 4:03pm On Nov 24, 2008
Who is very good in
Control system here
I have some probs,

oK,let me shoot with this
to know who is who,

What is another name for
an open loop system?
Re: The Educative Game by jaybee3(m): 4:11pm On Nov 24, 2008
zero feedback system
Re: The Educative Game by thetruth90: 11:56am On Nov 25, 2008
what walks on three legs, jumps on four legs and stands on seven legs?
Re: The Educative Game by neowelsh(m): 12:11pm On Nov 25, 2008
oboy, that 1 hard o0o0o grin grin

hope i got it right shocked shocked

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