Monday

October 20, 2014

October 20, 2014

Total # Posts: 21

**physics**

The resistance of a coil copper wire at 20 degree celsius is 2.21 ohms. After a current of 10 amperes has been flowing in wire for two hours, the resistance of the coil was found o be 2.59 ohms. What is the temperature rise?
*October 9, 2014*

**math**

how many people casn equally share 2 1/2 pizzas?if each will get 1/4 pizza?
*November 4, 2013*

**Math**

Two circles C1 and C2 touch externally at A. The tangent to C1 drawn at a point B on the circumference of C1 meets C2 in P and Q so that P is between B and Q. QA is produced and meets C1 at X. Prove that angle XAB = angle PAB.
*September 19, 2012*

**Math**

let AB and CD be perpendicular diameters of a circle. two chords AE and AF, which lie in the two different semicircles determined by the diameter AB are cut by the diameter CD in the points X and Y respectively. prove that angle EXF = angle EYF
*September 19, 2012*

**Math**

2 circles C1 and C2 meet at the points A and B. Points C and Dare points on the circumferences of C1 and C2 respectively such that angle CAB = angle DAB. CD cuts C1 and C2 at the points Y and X respectively. if Z is the foot of the perpendicular from X to BY, prove that angle ...
*September 19, 2012*

**Math**

in a quadrilateral ABCD, BC is parallel to AD. AB = BC, 13CD = 20BC and 34AB = 13AD. H is a point on AD such that CH is perpendicular to AD. Prove that 5CH = 3CD
*September 19, 2012*

**physics**

I got... Torque (by radiation) = F dot R = A*P dot R = A*P cos(theta) R P = 0.5 * (electric constant) * E^2 Torque (by gravity) = -mg sin(theta) Torque (by radiation) + Torque (by gravity) = 0 Then i solved for E. Which gives me a wrong answer. I don't know why.
*May 14, 2012*

**MATH gr10**

9(n+3)=7n-3
*June 14, 2011*

**math**

a 30 b 20 c 40
*May 6, 2011*

**physics**

a 65 kg object is pulled at a constant velocity up an incline w/ a force of 95 N parallel to the incline. Assuming that the difference between the work output and input is work required to overcome friction, what is the force of friction along the incline (the length of the ...
*April 8, 2011*

**Chemistry**

because CH4 and 4F_2 ratio is 1:4
*March 28, 2011*

**phisics**

1. 8000 m/s^2 east
*February 15, 2011*

**Geometry**

list the sides in order from shortest to longest in angle ABC,with A=80 ,Q =3x+5 , and C =5x-1
*January 31, 2011*

**Geometry**

list the sides in order from shortest to longest in angle PQR,with P=45,Q=10x+30,and R=5x
*January 31, 2011*

**Geometry**

A study draws triangle with a perimeter 36cm.the study says that the longest side measures 18cm. how do you know that the student is incorrect?
*January 31, 2011*

**math**

With regards to question J: The variables x and y are connected by the equation y = x2 - x - 5. Some corresponding values of x and y are given in the table below. x -4 -3 -2 -1 0 1 2 3 4 5 y 15 7 a -3 -5 b -3 1 7 15 (a) Calculate the values of a and b (b) Use 2 cm to represent...
*January 24, 2011*

**Internatinal Relations**

Five of the most serious international problems facing the world today are: 1) the proliferation of WMD 2) international terrorism 3) economic development in impoverished countries 4) international financial stability 5) climate change In which of these five areas do you ...
*March 9, 2010*

**Internatinal Relations**

So I was thinking either 1 or 5 for most progress. 1 because it is a problem that has a very real feel of life and death. Increased in WMD increases likelihood of nuclear warfare. Esp with Iran and N. Korea taking up the headlines of today. But then, this issue has been around...
*March 9, 2010*

**Internatinal Relations**

Five of the most serious international problems facing the world today are: 1) the proliferation of WMD 2) international terrorism 3) economic development in impoverished countries 4) international financial stability 5) climate change In which of these five areas do you ...
*March 9, 2010*

**science**

Gallium has an atomic mass of 69.7 amu. In a typical sample, 60.4% of Ga exxists as a Ga-69 (68.9257 amu). What isa the identity and the atomic mass of the other isotope?
*September 21, 2009*

Pages: **1**