Sunday

April 20, 2014

April 20, 2014

Total # Posts: 70

**stats**

To estimate the mean score of those who took the Medical College Admission Test on your campus, you will obtain the scores of an SRS of students. From published information you know that the scores are approximately Normal with standard deviation about 6.4. You want your ...

**Chemistry**

CuCl2+2NH4OH=2NH4Cl+Cu(OH)2

**uni physics **

A balloon of radius 30.0 cm is sprayed with a metallic coating so that the surface is conducting. A charge of 8.85×10−8 C is placed on the surface. What is the potential on the balloon's surface? 2.65×10^3 V Suppose that the some air is let out of the bal...

**Chemistry stoch1**

Calculate mass of iron, which will be converted into (Fe3O4) by the action of 18g of steam on it.

**Algebra **

(62+15)+38=62+(15+38)

**Math**

d/e for d = -6 and e= 3

**Math**

(A+b) for a=and b=-8

**Algebra**

Find the a-b if a =3 and b =5

**Math**

5[2(8+5)-15]

**Math **

8(5+30/5)

**Math **

-30/(-5)

**Math**

2x+3=15

**Chemistry**

0.6

**Chemistry**

The normality of 0.3 M phosphorus acid (H3PO3) is.......

**Chemistry stochimetry2**

The volume strength of 1.5 N H2O2 is.......

**Chemistry, stochiometry2**

The no. Of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is.......

**Chemistry**

The maximum molecular mass ............ Atoms.

**Chemistry**

Calculate the molarity of 1 lit solution of 93% H2SO4 by weight by volume even the density of solution is 1.84 g/ml

**Math**

5050

**Physics**

50/3N

**Physics**

Two blocks of mass 3kg and 2 kg are jointed with a massless and inextensible string. If breaking tension of string is 10N find the maximum horizontal force with two blocks can be pulled on the surface.

**Chemistry**

The molarity of amonia in aqueous solution is 11.8 mole/dmc calculate the amount of fraction of amonia in solution density of solution is 0.916 g/cc

**Chemistry**

An aqueous solution is 1.33 molality in method determine the amount fraction of methenal and water

**Physics**

What would happen when a dipole is placed in uniform electric field making an angle theta with the direction of electric field ?

**math **

which of the following lines is not parallel to y=2x+1 1)4x-2y=-4 2)2y-x=4 3)y-2x=6 4)2x-y=4

**algebra **

which of the following lines is not parallel y=2x=1 1)4x-2y=-4 2)2y-x=-4 3)y-2x=6 4)2x-y=-4

**math**

find the pair own parallel lines 1)-12y+15x=-4 2)4y=-5x-4 3)15+12y=-4

**math**

which of the following equations has a graph that is parallel to the graph of 4x-2y=7? 1)4x+2y=2 2)-2y=4x+2 3)7-4x=2y 4)2y=4x+7 5)-4x-2y=-7

**algebra **

find the pair of parallel lines 1)-12y+15x=4 2)4y=-5x-4 3)15x=12y=-4

**statistics**

from a normally distributed infinite number of iron bars lengths with a mean and standard deviation as 4 ft. and 0.6 ft. respectively, a sample of 100 bars is taken. if the sample mean is 4.2 ft., can the sample be called a truely random sample?

**Science**

Name the two forms of oxygen element found in atmosphere. Which one among them grievuing depleted?state and explain the reason?

**equation inequality and graph**

(9x+5)(x-3)=0

**Physics**

A placekicker kicks a football at an angle of 60°. At what angle will the football hit the ground.

**english**

Similarities between The Storm by Mcknight & Once upon a time by Nadine Gordimer?

**English 12**

David Suzuki uses examples that include his daughters. Why do you think he does this? Support your answer by incorporating a quotation into your response.

**arithmetic**

if tanx+cotx=2 then the value of tan^5x + cot^10x is

**History**

what are the related phases of revolutionary development until 1781 For the American Revolution and 1795 for the French Revolution?

**English**

A paragraph described your experiences regarding the arrival of new year

**algebra**

Find the angles between the following pairs of vectors (1)3i+2j-6k,4i-3j+k (2)2i-3j+k,3i-j-2k

**algebra**

Find the angles between the following pairs of vectors (1)3i+2j-6k,4i-3j+k (2)2i-3j+k,3i-j-2k

**science**

what is black hole form?

**physics**

WHEN TWO BODIES A AND B INTERACT WITH EACH OTHER,A EXERTS a FORCE OF 10 N ON B,TOWARDS EAST.WHAT IS THE FORCE EXERTED BY B ON A?

**Chemistry**

answer is d

**physics**

Why does cross sectional area of a liquid stream reduces while falling vertically??

**Commerse**

What is the difference between private and public sector bank

**Geometry**

D is the mid-point of side AB of the triangle ABC, E is mid-point of CD and F is mid-point of AE. Prove that: Area (triangle AFD) =Area (triangle ABC).

**algebra**

9x+6y=3 (1) 3x-7y=-26 (2) using substitution method in (1) we get 9x+6y=3 dividing by 3 both side we get 3x+2y=1 taking 2y to the other side (here 2y in + so when we change its side it will be -) 3x=1-2y (here 3 is multiply with x so when it goes other side sign will change in...

**History**

Hi, i neeed some help with Canadian history, would you be able to help?

**Physics**

1) The vector sum of three vectors gives a resultant equal to zero. what can you say about the vectors? 2) Vector is 3.00 units in length and points along the positive x-axis. Vector is 4.00 units in length and points along the negative y-axis.Use graphical methods to find the...

**PHYSICS!!**

i have the same question but you could you give the equation because i am confused

**math**

A bacteria culture starts with 260 bacteria and grows at a rate proportional to its size. After 4 hours there will be 1040 bacteria. (a) Express the population after t hours as a function of t. this is what i put as my answer but i guess its not right do i replace the four wit...

**math**

If f(x)=5cos(2ln(x)), find f'(x). My answer is (-5sinx)(2lnx)+(5cosx)(1/x) I just did the product rule can you verify if this is correct please!

**physics**

what is reason for saturation current in reversed biased diodes

**PHYSICS**

An electric dipole has its dipole moment paligned with a uniform external electric field E(a)Is the equalibrium stable or unstable ?(b)Discuss the nature of the equilibrium if Pand E point in opposite directions?

**physics**

An atom is normally electrically neutral .Why then should an alpha particle be deflected by the atom under any circumstances?

**physics**

If an electron is localized in space ,its momentum becoms uncertain.If it is localized in time ,its energy becomes uncertain.explain this statement.

**physics**

which will be more effective in knocking a bear down (a)A RUBER BULLET OR (b)a lead bullet of the same momentum.

**physics**

what is the effect on the speed of a fighter plane chasing another when it opens fire?what happens to the speed of pursuid plan when it returns the fire?

**physics**

In thrill machine rides at amusement parks ,there can be an acceleration of 3g or more .But without head rests ,acceleration like this would not be safe.think why not?

**Principles of Math 11**

i need help with chapter 4

**English**

David Suzuki uses examples that include his daughters. Why do you think he does this? Support your answer by incorporating a quotation into your response.

**Chem**

How would I prepare 25mL each of the dilute solutions of 5mL, 10mL and 20mL and is it possible to dilute it too much?

**Chem Urgent**

What do you mean? I know the equation is %T=It/Io*100 A=log(Io/It)=-logT I don't know how to use it and plug in the information I have.

**Chem Urgent**

If for a. the concentration is 2.02E-6, Wavelength at 630, Absorbance is .216, how would I find the %T.

**Chem Urgent**

Its Molar. Thanks

**Chem Urgent**

Volume of stock solution a. 5.0mL b.10.0mL c.15.0mL d.20.0mL Prepare 25mL of each of the four different dilute solution Concentration of stock- 1.01E-5 Calculate molarity for a,b,c,d Molarity=m1V1/V2 for a would the answer be 2.02E6????? (1.01E-5)(5.0)/(25.0)

**Math**

Responding back as requested: This is all I was provided Solve the folowing system of linear inequalities by graphing. x + 2y is less than or equal to 3 2x - 3y is less than or equal to 6 I would change the inequality into slope intercept form and treat it like an equation. y ...

**Math**

I have been asked to solve the following system of linear inequalities by graphing. I tried replacing with various numbers but even though the they work in the equations my graphs change from consistent to inconsistent. Please help.

**maths**

5 m : 140 cm = ???????? ratio and proportion 5 m is 500cm. Does that help?

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