# Search:

Type: Posts; User: Celine91

1. ## Question: Accounting

by Celine91
1
Views
1,198

### The veryy basic rule of annual compounding: F...

The veryy basic rule of annual compounding:

F = P (1 + r )^n

P: original amount invested = \$11,600,
r: interest rate = 10%,
F: Future value of P = \$30,052 (don't get misled with terms,...
2. ## Question: How long will it take the sun to burn off the fog if it can supply Q =40 J s-1 to the

by Celine91
1
Views
2,725

### q = 113 joules (energy required to evaporate all...

q = 113 joules (energy required to evaporate all liquid water in 1m3 of fog)

* refer to your other post on how we calculated this energy.

if it is given that sun can supply Q =40 J s-1, then...
3. ## Question: How much energy is required to evaporate all of the liquid water in 1 m3 of the fog?

by Celine91
1
Views
2,862

### first thing is to calculate how much liquid water...

first thing is to calculate how much liquid water is there in 1m3 of fog. Fog has 0.05 g/m3 liquid water density => in 1m3 of fog there is 0.05 g of water.

and q = m Hv,
Heat of Vaporization of...
4. ## Question: Physics

by Celine91
1
Views
436

### you have to draw the geometry of this problem...

you have to draw the geometry of this problem first, starting point of eye of hurricane is O with coordinates (0,0), moves 18 deg. north of west, this makes line A 18 deg. up of the negative x-axis...

by Celine91
8
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3,645

6. ## Question: A deck of cards is shuffled, and I choose one at random, observe its color, and repla

by Celine91
1
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1,601

### This is a geometric distribution (experiment...

This is a geometric distribution (experiment performed repeatedly until particular outcome is observed). A sequence of independent Bernoulli trials, each with probability of success p, and X number...
7. ## Question: What's that movie called?

by Celine91
2
Views
510

### Kate & Leopold ?

Kate & Leopold ?
8. ## Question: Cubic feet calculation

by Celine91
1
Views
611

### 43 inches of circumference and 1 feet length. ...

43 inches of circumference and 1 feet length.

circumference: 2*pi*r = 43 inches ---> r = 6.847 inches
area = pi * r^2 = 147.275 (inches)^2
volume = area * height = 147.275 * 12 = 1767.29...
9. ## Question: Probability Help!

by Celine91
1
Views
943

### a) ok so first you have to suggest a sampling...

a) ok so first you have to suggest a sampling method for the car manufacturer, since its given that he randomly decides to test 200 ignition equipment then best strategy is simple random sampling...
10. ## Question: Math story problem answers

by Celine91
3
Views
2,238

### newland2010, your comprehension was wrong! 30...

newland2010, your comprehension was wrong! 30 swam in deep and shallow ends (BOTH). The question clearly asks for the number of people who swam in deep end ONLY and shallow end ONLY. my answer was...

by Celine91
30
Views
30,230

12. ## Question: [Computer Engineering ] Need help understanding logic gates and how to make them?

by Celine91
14
Views
1,687

good luck again.
13. ## Question: [Computer Engineering ] Need help understanding logic gates and how to make them?

by Celine91
14
Views
1,687

### You use transistors to design logic gates, given...

You use transistors to design logic gates, given the gates, what is it that you don't understand?

if you don't know where to place the components:
LEDs and current limiting resistors should be...
14. ## Question: [Computer Engineering ] Need help understanding logic gates and how to make them?

by Celine91
14
Views
1,687

### -logic diagram is your choice, its correct as...

-logic diagram is your choice, its correct as long as you satisfy the conditions (use AND, OR, NOR at least once, and at least three different inputs). so yes its correct according to the...
15. ## Question: Answer my maths problems

by Celine91
2
Views
948

### let x: bank account before first withdrawal,...

let x: bank account before first withdrawal,
Monday: withdrawn (800), left (x-800)
Tuesday: withdrawn (0.5 * (x-800)), left (0.5 * (x-800))
Wednesday: left (0.5 *(x-800)) + 1650
Friday: account...
16. ## Question: Pheripheral velocity.

by Celine91
1
Views
747

### 1 revolution = 2 pi radians and pi = 3.14 so 4...

1 revolution = 2 pi radians
and pi = 3.14
so 4 revolutions = 4 * 2 * 3.14 radians
dont have a calculator, rest is very obvious.
17. ## Question: Demonstrable

by Celine91
1
Views
482

### first step is to determine which side to...

first step is to determine which side to simplify, first obvious thing to do is to relate to this: (a^4 - b^4) = (a^2 - b^2) * (a^2 + b^2),
so we have to...
18. ## Question: Using the trigonometric identities, prove the educatiuon

by Celine91
1
Views
549

### simply use the formula: cos(A+B) = cos(A)cos(B) -...

simply use the formula: cos(A+B) = cos(A)cos(B) - sin(A)sin(B)

in your question let A = 5x and B = -2x (because 5x - 2x = 3x)

so cos (5x+ (-2x)) = cos(5x)cos(-2x) - sin(5x)sin(-2x)
where,...
19. ## Question: Energy and area of water balloon' splatter?

by Celine91
1
Views
792

### I would try to apply first the principle of...

I would try to apply first the principle of conservation of energy from the point it falls from, until it hits the ground (IMMEDIATELY AFTER).

m: mass of water balloon
V: speed with which it hits...

by Celine91
1
Views
532

### Final amount = original amount + interest -F:...

Final amount = original amount + interest
-F: final value
-P: present value
-r: interest rate (per year)
-t: time in years
F = P * (1 + r * t )
F = 18800 (1+0.08(3)) = \$ 23,312.
21. ## Question: the sum of four numbers is 60

by Celine91
1
Views
487

### The given is not really clear! What I...

The given is not really clear!

What I understood..
(a+4) + (b-4) + (c*4) + (d/4) = 60
a+b+4*c+0.25*d = 60
then you have many solutions for a, b, c, and d.
one can be:
a = 10
b= 12
c = 4
22. ## Question: Instant Math Answers Free

by Celine91
1
Views
2,827

### let x = number of animals with two legs and y =...

let x = number of animals with two legs
and y = number of animals with four legs

The total number of legs is 46, this can make a simple equation:

2*x + 4*y = 46 , there are many possible...
23. ## Question: Fractions

by Celine91
4
Views
1,005

### Seven sheep make up 1/12 of a flock of sheep on a...

Seven sheep make up 1/12 of a flock of sheep on a farm. Sheep make up 2/7 of all the animals on the farm.

just rewrite the above statement in equations form and you will get the answer very simply...
24. ## Question: Physics

by Celine91
3
Views
643

### yeah sorry forgot the time variable! (m/t) =...

yeah sorry forgot the time variable!

(m/t) = ρ*V*A... right side kg/sec (kg/m^3 * m/sec * m^2 = kg/sec)

and V=gt so t can be replaced with V/g
this makes the formula (m*g/V) = ρ*V*A......
25. ## Question: Nernst Equation Question (voltage)

by Celine91
1
Views
715

### The Nernst Equation: Ecell = Estandard -...

The Nernst Equation: Ecell = Estandard - (RT/nF)lnQ
at 298 k ( assuming T = 25 deg. ) : Ecell= Estandard - (0.05916 /n)ln Q

n: number of electrons in half cell and Q is reaction quotient of...
26. ## Question: Physics

by Celine91
3
Views
643

### m = ρ*V*A V = m / ( ρ* A ) V = 500 / (1.3 *...

m = ρ*V*A

V = m / ( ρ* A )
V = 500 / (1.3 * 30 ) = 12.8205 m/sec
27. ## Question: Complete this statement

by Celine91
2
Views
576

### you are confused if the answer is 4*10 or 10/4 ...

you are confused if the answer is 4*10 or 10/4

The statement clearly says: Blank is 4 times the 10 = 4*10 = 40

The other way around would be: 10 is 4 times as many as blank (in this case...
28. ## Question: Vectors

by Celine91
1
Views
465

### V cos 12 (horizontal component) = 14.6722 i...

V cos 12 (horizontal component) = 14.6722 i (vector)
V sin 12 (vertical component) = 3.1186 j (vector)
29. ## Question: Vectors

by Celine91
1
Views
457

### free fall (cuz we are ignoring the wind...

free fall (cuz we are ignoring the wind resistance )

summation of forces = m * a
m*g = m * a (weight is the only acting force during free fall)

=> a = 9.8

x = 0.5 * a * t^2... solve for t...
30. ## Question: Simple pendulum

by Celine91
2
Views
672

### initial energy = final energy (principle of...

initial energy = final energy (principle of conservation of energy)
(kinetic E + potential E) initial = (kinetic E + potential E) final
0.5*m*Vi^2 + m*g*hi = 0.5*m*Vf^2 + m*g*hf

Take the ground...
31. ## Question: Sum

by Celine91
1
Views
903

### you can simply solve this with 'trial and error',...

you can simply solve this with 'trial and error', but I am not sure this is the kind of answer you are looking for...
I would think of factoring 144 as a first step
2*72
3*48
4*36
6*24
8*18...
32. ## Question: Quadratric equations that are expressed in the form of ax ^ 2 + bx + c = 0.

by Celine91
1
Views
865

### ax ^ 2 + bx + c = 0 1- if b²>4ac There are...

ax ^ 2 + bx + c = 0

1- if b²>4ac
There are two solutions.

2- If b²=4ac
There is one solution.

3-if b²<4ac
There are no real solutions (not real numbers)
33. ## Question: Finding the average of random numbers a user inputs

by Celine91
1
Views
634

### This can be the c++ version of your code, it...

This can be the c++ version of your code, it successfully calculates the average of random numbers the user inputs and terminates for -1 * as specified in your code*...
34. ## Question: Algorithm

by Celine91
1
Views
899

### A very simple c++ code can be : #include...

A very simple c++ code can be :

#include <iostream>
using namespace std;
int main()
{

for (int i =0; i<49; i ++)
{
cout<<i<<" ";
35. ## Question: Thermometer sterilisation

by Celine91
1
Views
418

### Mercury at boiling temperature of water (100 deg....

Mercury at boiling temperature of water (100 deg. Celsius) will eventually heat up and expand thus making high pressure and thermometer would burst!
36. ## Question: Finding the zeros of a quadratic function:

by Celine91
2
Views
746

### For the first case: t1 = 1/v.. hr For the second...

For the first case: t1 = 1/v.. hr
For the second case (speed increase): t2 = 1/(v+8.4)... hr

The time difference is 14 sec = 14/3600 hr

t1-t2 = 14/3600 hr
1/v - 1/(v+8.4) = 14/3600 hr... Work...
37. ## Question: average speed = distance /time

by Celine91
3
Views
1,139

### let D be the distance of the path (same out and...

let D be the distance of the path (same out and back )
Vout is the average speed of the journey out
and Vback is the average speed of the journey back
Tout = D / Vout
and Tback = D / Vback
...
38. ## Question: average speed = distance /time

by Celine91
3
Views
1,139

### let D be the distance of the path (same out and...

let D be the distance of the path (same out and back )
Vout is the average speed of the journey out
and Vback is the average speed of the journey back
Tout = D / Vout
and Tback = D / Vback
...
39. ## Question: Math story problem answers

by Celine91
3
Views
2,238

### let s = number of people who swam in the shallow...

let s = number of people who swam in the shallow end only
let d = number of people who swam in the deep end only

since 30 swam in both deep and shallow ends then we eliminate them from the total....
40. ## Question: Engineering Management Masters or MBA?

by Celine91
5
Views
1,673

### Thank you all! I am an electrical and computer...

Thank you all! I am an electrical and computer engineer and got accepted for a technical job with a very good company, I will wait few years before I decide, I still have much to learn..

Good...
41. ## Question: Engineering Management Masters or MBA?

by Celine91
5
Views
1,673

### Engineering Management Masters or MBA?

Engineering fresh graduate, and I still can't decide which is better engineering management masters or MBA?
Sometimes I hear it's the same, others say MBA is better

Well, not looking for a...
42. ## Question: Tell me the reduced form please

by Celine91
1
Views
458

### Man! Just use a calculator , 153/64

Man! Just use a calculator , 153/64
43. ## Question: Lightening black hair

by Celine91
1
Views
583

### Lightening black hair

Please someone advise me! I want to remove color buildup on my hair! Its black and tried to lift its level with market dye box but the black doesn't seem to lighten except from the roots! Any advice...
44. ## Question: Physics

by Celine91
1
Views
482

### F = ma let P = pulling force ( + x-axis) and...

F = ma

let P = pulling force ( + x-axis)
and Fr = friction force (- x-axis)

P - Fr = ma
P - 0.1 = 200 * 1.5
P = 300 - 0.1 = 299.9 N

P is the force of pulling of the 8 dogs, for each dog...
45. ## Question: How can I make program in java that convert capital letter to small letter

by Celine91
2
Views
1,186

### public static void average( char [] letter ) { ...

public static void average( char [] letter ) {

for (int I = 0; I < letter.length; I++) {
letter[i] = Character.toLowerCase(letter);
}

...
46. ## Question: What is the formula for

by Celine91
1
Views
456

### Not sure what you exactly mean ! But refer to...

Not sure what you exactly mean ! But refer to this it may help..

How to prove 1*1!+2*2!+3*3!...n*n!=(n+1)! -1 using mathematical induction? plz help? - Yahoo! Answers
47. ## Question: Uniform acceleration

by Celine91
1
Views
438

### to get Vfinal of the first 5 sec. use V = a * t ...

to get Vfinal of the first 5 sec. use V = a * t
then we get Vf = 50 m/sec

and use (Vf) ^2 - (Vi)^2 = 2 * a * d
we get 2500 - 0 = 2 * 10 * d
and d = 125 m or simply could have reached this...
48. ## Question: Draw circuit

by Celine91
1
Views
386

### Current will be passing through his hands to his...

Current will be passing through his hands to his body down to his feet, you can consider any simple circuit consisting of a voltage source and a resistor, human body is the resistor with hands being...
49. ## Question: Hair coloring!

by Celine91
2
Views
634

### Well, yes you were right! I dyed it at home again...

Well, yes you were right! I dyed it at home again (only 3 weeks gap) and nothing changed, actually color only shows on roots and in light, but not good looking! So yes, I will take care of my hair...

by Celine91