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Posts by abc

Total # Posts: 115

Physics
2 charge of 10 microcoulomb and 40 microcoulomb respectively 12cm apart find the position of a point where electric field is zero

Math
Olivia is three times as old as her sister.After three years,she is two years more than twice of her sister age.Then what is Olivia present age?

math
a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen.

123
plz halp on hw quik

math
A long wire of some length is cut into small pieces of 216 cm, leaves a small piece of length of 89 cm. if this part were cut into equal pieces each of 18 cm, the length of the of the leftover wire would be:

english
what are the factors that causes diversity in language?

FINANCE
Six years ago the Singleton Company issued 20-year bonds with a 14% annual coupon rate at their $1,000 par value. The bonds had a 9% call premium, with 5 years of call protection. Today Singleton called the bonds. Compute the realized rate of return for an investor who ...

Math
The probability that it rains tomorrow is 0.14. What is the probability that it doesn't rain tomorrow?

Science
2 racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that each makes a complete circle in same time t. The ratio of Angular speed of the first car to the second car is?

Science
a tank 2m high is half filled with water and then filled to the top with oil of density 0.8 g/cc . what is the pressure at the bottom of the tank? g= 10m/s2

english
story on talented boy

physics
A ball is projected horizontally from the top of a building 19.6m high.if the line joining the point of projection to the point where it hits the ground makes an angle of 45° to the horizontal what is the initial velocity of the ball

geography
why are weddings usually planned in summers in villages?(beacause of the earth's revolution).

chemistry
Xyz

physics
A tank of compressed helium for inflating balloons is advertised as containing helium at a pressure of 2374 psi, which, when allowed to expand at atmospheric pressure, will occupy a volume of 194 ft3. Assuming no temperature change takes place during the expansion, what is the...

Mechanical Behavior of Materials
-(P*l_AB^3)/(3*E*I)

Mechanical Behavior of Materials
answer is 1.393

Mechanical Behavior of Materials
answer is 600000

Mechanical Behavior of Materials
600000

2 Math Questions
Sorry about the long name

Finance
Honey well international zero coupon bonds par value $1000 mature on April 21, 2012. Calculate the yield to maturity if an investor purchased one of these bonds on April 21, 2006, at a price of $650.

Thermodynamics
-180 69 C 563.5 550 550 b)

Map Rectangle
The scale of the map is 1:1000. What are the actual dimensions of a rectangle which appears as 4cm by 3cm on the map? What is the area on the map in cm2. What is the actual area in m2.

Map to sacle
The 17th hole at the famous St Andrews golf course is 420m in length. how long will it appear on a plan of course of scale 1:8000?

math
The 17th hole at the famous St Andrews golf course is 420m in length. how long will it appear on a plan of course of scale 1:8000?

Astronomy
1. 10^12 2. 30

physic
A cylindrical conductor of length l and uniform area of cross-section A has resistance R. What is area of cross section of Another conductor of the same material of length 2l and resistance R ?

Maths Probability
Ans for 3, 5 and 6? Anyone?

Maths Probability
3. 1.5 is incorrect :(

Astronomy
2.089*10^28

Probability
Let Zi=13Xi+23Xi+1 for i=1,2,…, and let Mn=1n∑i=1nZi for n=1,2,…. What value does the sequence Mn converge to in probability? Ans: 2

Math
When fX(x) = {2e−2x,if x>0, 0, otherwise, we have fY(y) = {g(y),if a<y, 0, otherwise. Give a formula for g(y) and the value of a using the standard notation. g(y)= a=

Math
When fX(x) = {1/3, if −2<x≤1, 0, otherwise, we have fY(y) = {g(y),if a<y≤b, 0,otherwise. Give a formula for g(y) and the values of a and b using standard notation. (In your answers, you may use the symbol 'e' to denote the base of the natural ...

Math
P(X>0.75)= 0.2266 P(X≤−1.25)= 0.1056 Can't figure out these: E[Z]= var(Z)= P(−1≤Y≤2)= anyone?

Math
Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let Z=(Y−3)/4...

Probability
Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let Z=(Y−3)/4...

probability
anyone know the answers to this?

Probability
has anyone figured out the answer for (c)??

chemistry
use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10M Na2CO3.(Ka=5.6x10^-11). how would you prepare NaHCO3-Na2CO3 buffer solution that has the pH of 10.40.

Calculus
¡ìdx/(x^2-1)^2

Calculus
¡ì(up:1 down:0) (x^3 dx)/(x^2+2x+1)

Calculus
y"-y'=sin x solve in undetermined coefficients

probability
Before leaving for work, Victor checks the weather report in order to decide whether to carry an umbrella. The forecast is “rain" with probability 20% and “no rain" with probability 80%. If the forecast is “rain", the probability of actually ...

probability
P(A) = 4/9 P(C) = 0 P(D) = 3/4 Anyone know the solution for the below?: P(B) P(A∩B) P(A∩D)

probability
P(D) = 0.75

Physics Classical Mechanics Help ASAP
fred for temp of 5 degrees celsius b) 55465.76 c) 24 percent

Physics Classical Mechanics Help ASAP
c) 24 percent

chemistry
Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) is 104 kJ, determine the vacancy density (nv/cm3) in Cu at 1085 K. Assume the pre-exponential factor is one. unanswered

chemistry
A p-n junction is obtained at a depth of 3 x 10-3 cm below the surface by diffusion of antimony (Sb) into p-type germanium. What is the donor concentration in the bulk germanium if the diffusion is carried out for three hours at 790 C? Express your answer in number of donor ...

chemistry
The Young's modulus for a material is 15.0 x 10^10 N/m2. The material is stretched to a strain of 6.0 x 10^-3. How much elastic energy will be expended? (Express your answer in J/m3)

chemistry
The Young's modulus for a material is 15.0 x 1010 N/m2. The material is stretched to a strain of 6.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3)

chemistry
Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) is 104 kJ, determine the vacancy density (nv/cm3) in Cu at 1284 K. Assume the pre-exponential factor is one. unanswered

Physics Classical Mechanics
have you got answer of any one of your questions????? :p

Quantum Physics
what about others, please help rs and others..........

Quantum Physics
Q7 and 8 please

indian springs
plzzzz answer this question

Math
Five weeks is how many seventy-thirds of a year

math calculus (please help me)
The marginal cost of a product is modeled by dC/dx= 16/cube root 16x + 3 where x is the number of units. When x = 17, C = 120. (a) Find the cost function. (Round your constant term to two decimal places.) c= (b) Find the cost of producing 90 units. (Round your answer to two ...

eonomics
c. market forces

math 160(buss calculus)
The demand function for a product is given by p = 10,000 [1 − (5/5 + e^−0.001x)] where p is the price per unit (in dollars) and x is the number of units sold. Find the numbers of units sold for prices of p = $1000 and p = $1500. (Round your answers to the nearest ...

physics
its wrong!!!! tell the correct answer

physics
you son of bitc h go in your mother`s slit!!!!!11

physics
its wrong,,,,,,, tell the correct answer

Maths
thanxxxx

Quantum Physics
@abc did you got question 8D?

Quantum Physics
Anonymous, did you get all solutions for Q 7 and 8 except 8(D). If yes then please share......

physical
An electric field with a magnitude of 3.50 kN/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.7 m long assuming that (a) the plane is parallel to the yz plane; (b) the plane is parallel to the xy plane; (c) the plane ...

physics
A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..??

Maths-Query
abc

lab
How much 38%Hcl will be used to prepare N/3.05 solution in 2litre water.

Biology
bacteria

Algebra- Check Please
that isn't the answer, use substitution replacing y to the left of the equation 9/7x=-3x+12 solve this for x. then multiply the x you find by 9/7 to get the y

Math
x=green marbles y=blue marbles x+y=57 x+13=y b/c there are 13 more blue marbles substitute in to other equation x+(x+13)=57 then solve for x, then for y add 13 to x

math
you take the prize of the bag and divide that by the number of ounces, the lower of the outcomes gives you your answer

math
to AVG at least a 60 his total test scores must add up to 420 b/c 420/7=60. therefore you can add his current test scores and then subtract that number from 420 to find the minimum he can receive on the 7th test

Physics
On a frictionless table, a 3kg block moving 4m/s to the right collides with an 8kg block moving 1.5m/s to the left. If the blocks stick together, what is the final velocity? How much mechanical energy is dissipate in the collision?

discrete structure
Assume that Adam has 4 books to be bought. For each book, Adam can buy it from 3 different shops. Further assume each shop is unique. Using graph/tree graph,show the possible ways to buy all books starting from book 1 to book 4 in sequence.

linear programming math
A man owns two building supply stores, one on the east side and one on the west side of the city. Two customers order some 1/2 inch plywood. Customer A needs 50 sheets and customer B needs 70 sheets. The east side store has 80 sheets and the west side store has 45 sheets of ...

AP WORLD HISTORY
Increased the use of slavery: using it as a payment for slaves. Violence: people got drunk and violent

PHY
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. 1360 m/s correct answer. (b) If an ...

Science
1. b 2. a 3. d 4. d

statistics
in 1000 tosses of a coin, 560 heads & 440 tails appear. is it reasonable to assume that coin is fair.

PHYSICS
A 30.0 KG LOAD IS BEING RAISED BY A FORCE OF 180N USING THE IDEAL PULLEY ARRANGEMENT SHOWN IN FIG, WHAT IS THE ACCELERATION OF THE LOAD? PLEASE HELP

PHYSICS
A 30.0 KG LOAD IS BEING RAISED BY A FORCE OF 180N USING THE IDEAL PULLEY ARRANGEMENT SHOWN IN FIG, WHAT IS THE ACCELERATION OF THE LOAD? PLEASE HELP

Finance
help the marketing manager decide which product promotion to implement

Finance
help the marketing manager decide which product promotion to implement

Corporate Finance
) A typical use of managerial accounting is to: help the marketing manager decide which product promotion to implement

spanish
please unscramble this spanish word: REGTARLNIA

chemistry
d = m/v = 16.3/85.2 = 0.191

math
If 2^x=3^y=12^z then show that 1/z = 1/y + 2/x

geometry
In the figure shown, NK and ML are parallel, JN=10 feet, NK=14 feet, JL=22 feet, and ML=24. Find KL.

algerba..plz help
A 400 g solution is 25% salt. How much salt must be added to produce a solution that is 40% salt?

math
Yup!

math
You just do 1/8 to find the percentage.

Grammar
Do your parents come from El Salvador?

geometry
a=46c

Physics
200

cpu
lim x infnitive (4x-1/2x+9)

math
lim x infinitive (4x-1/2x+9)

Math
lim x infnitive (4x-1/2x+9)

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