Sunday
May 29, 2016

Posts by raj

Total # Posts: 288

statistics
2. At a local university, a sample of 49 evening students was selected in order to determine whether the average age of the evening students is significantly different from 21. The average age of the students in the sample was 23 years. The population standard deviation is ...
May 24, 2016

physics
A body is moving with velocity of 10_1.If the motion is uniform; what will be its velocity after 10 second
May 18, 2016

Math
A plant 73cm tall.how many more centimetres does it have to grow before it is 1 metre tall?
April 30, 2016

physics
An elevator cable can withstand a maximum tension of 1.83×104 N before breaking. The elevator has a mass of 420 kg and a maximum acceleration of 2.27 m/s2 . Engineering safety standards require that the cable tension never exceed two-thirds of the breaking tension
April 21, 2016

Calculus
216pi
March 1, 2016

maths
A train 300 m long overtook a man walking along the line in the same directionat the rate of 3km/hr and passed him in 36seconds find the speed of the train.
February 4, 2016

maths
At an election, a candidate secures 40% of the total votes but is defeated by the only other candidate by 300 votes .find out the total number of votes polled.
February 4, 2016

Science
a man runs a distance of 197.5 km in 200 minutes and he reduced his speed by 5 kmph in every 30 minutes. how much distance he will cover in 1 hour of his journey
January 26, 2016

math
30 34 38
January 15, 2016

JNU
A two digit number is such that the product of the digits is 8. When 18 is added to the number, the digits are reversed. Find the number.
December 26, 2015

Chemistry
What is the ionic strength of 0.2 M Na2HPO4 in a solution?
December 21, 2015

math
5% profit
December 20, 2015

Rs argrwal
Bd is öne of the diagonal of quad. Abcd.if al | bd and cm| bd ,show that ar(quad.abcd)=1/2xbdx(al+cm)
December 1, 2015

math
Find the height of a cuboid whose volume is 168 cubic metre and the area of the base is 28 square metre. The length of a reservoir is 2.5m. It's width is 2 m and its height is 4 m. If it is half-filled with water, find the volume of the water in the reservoir. Pls consider...
November 22, 2015

math
Find two positive real numbers x and y such that they add to 120 and x^(2)y is as large as possible
November 21, 2015

Maths
find two positive real numbers x and y such that their product is 800 and x+2y is as small as possible
November 19, 2015

maths
The ratio of speed of A and B is 2:3 and A takes 10 minutes more than the time taken by B to reach a destination. If A had walked at triple the speed, and B at half the speed, the difference between time taken by A and B will be: a) 15 minutes b) 20 minutes c) 25 minutes d) 30...
October 2, 2015

soild
A piece of material subjected to three mutually perpendicular stresses of 70, 56 and 84 MPa. If E= 200 Gpa, Poissions ratio= 0.28 Determine 1) Principal strains 2) Shear modulus 3) Bulk modulus.
August 7, 2015

rd. math
Pl find out hcf using division method 180,252,576
July 29, 2015

Physics
A 14 g bullet is fired into the bob of a ballistic pendulum of mass 1.6 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet. ?m/s Any help is greatly appreciated. ...
July 21, 2015

math
I dont no
July 11, 2015

total pitches
#60 pitch chain moving 180" conveyor. if one pitch 3/4. how many pitches need.
June 9, 2015

need ratio
1 1/2:4 1/2 need ratio
June 9, 2015

MATH
cut the iron peace in to ten total is 4 5/8. calculate if cut 1/16
June 8, 2015

math
two 12" PULEY MOVING CONVAYOR. IF IN MIDDLE BELT LENGTH 3 FEET,CALCULATE TOTAL LENGTH.
June 8, 2015

electromagnetism
magnet A. The difference in fall times depends on the strength of the magnets.
April 14, 2015

chemistry
You have to prepare a pH 5.00 buffer, and you have the following 0.10M solutions available: HCOOH, HCOONa, CH3COOH, CH3COONa, HCN, and NaCN. Which solutions would you use? HCOOH HCOONa CH3COOH CH3COONa HCN NaCN
March 23, 2015

chemistry
Is sodium isotonic with Mg²+
January 23, 2015

chemistry
WHAT IS THE FORMULA FOR 5.97 X 10 TO THE 11TH POWER
December 31, 2014

Algebra
Tell whether the each statement is sometimes, always or never true 1) If n is zero then x^-n is 1 2) If n is negative integer then x^-n=1 3) If x is zero then x^-n is 1 4) If n is an integer then x^-n>1
December 12, 2014

Advanced math
Find the Fourier sine expansion of the function sin(x) - sin(4x)
November 17, 2014

Math
CAN-179 SUrE-354 I-2
October 29, 2014

physics
The figure below shows a plot of potential energy U versus position x of a 1.30 kg particle that can travel only along an x axis. (Nonconservative forces are not involved.) In the graphs, the potential energies are U1 = 10 J, U2 = 35 J, and U3 = 50 J.
October 22, 2014

calculus
Find the points of the paraboloid z=x^{2}+y^{2}-1 at which the normal line to the surface coincides with the line joining the origin to the point. What is the acute angle betwwen the normal and the z-axis at these points?
October 18, 2014

calculus
A cable runs along the wall from C to P at a cost of $3 per meter, and straight from P to M at a cost of $5 per meter. If M is 16 meters from the nearest point A on the wall where P lies, and A is 50 mters from C, find the distance from C to P such that the cost of installing ...
October 18, 2014

calculus
Find the points of the paraboloid z=x^{2}+y^{2}-1 at which the normal line to the surface coincides with the line joining the origin to the point. What is the acute angle betwwen the normal and the z-axis at these point
October 18, 2014

calculus
Will u please answer it with detailed
October 18, 2014

calculus
how would you represent the area outside given y= 4cos(2theta) but outside y=4 ?
October 18, 2014

Algebra
detremine whether the relation is a function or not 1)y=-15 2)x=5 3)((1,0),(1,4),(-1,1)) 4)((6,3),(5,-2),(2,3)) PLEASE EXPLAIN WITH DEETAILED
October 18, 2014

Algebra
CRITICAL THINKING Explain how you know that the slope of the line through (4, 5) and (4, 5) is positive without calculating.
October 18, 2014

algebra 1
Adding 3w-4 on both sides 3w-4+4=18-3w+3w-4 3w=14 dividing both sides by 3 3w/3=14/3 w=14/3
October 17, 2014

calculus
ind the point(s) on the cone z^2 = x^{2}+3y^{2} that are closest to the point (-1,-7,0)
October 17, 2014

calculus
A sample poll of 100 voters revealed the following information concerning three candidates A, B, and C who were running for three offices. 10 voted in favor of both A and B, 35 voted in favor of A or B but not C, 25 voted in favor of B but not A or C, 65 voted in favor of B or...
October 17, 2014

physics
A mass of 3.25 kg is attached to the end of a spring that is stretched 20 cm by a force of 14 N. It is set in motion with an initial position x_0 = 0 and initial velocity (in m/s) v_0 = -11. Find the amplitude, period, and frequency of the resulting motion. You should assume ...
October 17, 2014

calculus
Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=x^2y+3y^2-y subject to the constraintx^2+y^2less than or equal to 10
October 17, 2014

calculus
Given g(x) = (x + cosx)/(e^x - 2x^3 + 5). Find g'(x). Do not need to simplify.
October 17, 2014

calculus
Find the point on the surface z = 2x2+xy+3y2 where the tangent plane is parallel to the plane 8x-8y-z=5.
October 17, 2014

math
Solve the initial value problem 3(y-1)^2 = y'', with y(0) = 3 and y'(0) = 4. Assume y does not equal 1.
October 17, 2014

calculus
f(x)= 3+4xe^{-5x}complete the sentences concerning the function a) the function f is decresing on the iterval...... b) the function f is increacing on the interval c) the function f is concave down on the interval d) the function f is concave up on the interva
October 17, 2014

Algebra
Given the following piecewise function: Find the Given the following piecewise function: f(x)= {?(x+10 for -9 ?x<-2@3 for -2 ?x ?0@2x-6 for 0<x ?5 )? Find the domain. Find the range. Find the intercepts. Is f continuous on its domain? If not, state where f is ...
October 17, 2014

Algebra
Describe how projections play a role in the least squares solution?
October 17, 2014

math
determine the number of zeros at the end of 50! using prime factorization
October 16, 2014

algebra
John read 1/4 of pages of book on Saturday and another 2/3 of pages on Sunday. She read the last 5 pages on Monday . What was the total pages of book?
May 2, 2014

math
fedrick ordered a new sign for her store. The sign has 4 sides . It also has 2 right angles. 1 acute angle , and 1 obtuse angle . What is the shape of the sign. 1. Hexagon 2. Trapezoid 3. rhombus 4. parallelogram
April 10, 2014

math
john ordered a new sign for her store. The sign has 4 sides . It also has 2 right angles. 1 acute angle , and 1 obtuse angle . What is the shape of the sign. 1. Hexagon 2. Trapezoid 3. rhombus 4. parallelogram
April 10, 2014

MATH
Ella ordered 16 pizzas for a p. After the party,, there were 3 5/8 pizzas left. How much pizza was eaten? solve the problem
April 4, 2014

math
The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work . find how much they collected. ...
March 24, 2014

biology
In chickens, males have two Z sex chromosomes (ZZ) and females have one Z and one W sex chromosome (ZW). The mechanism for inheritance of the sex chromosomes is exactly the same as for X and Y sex chromosomes in other species. In chickens the character of ‘barred’ or...
March 19, 2014

Biology
A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding black chicken and found that 100% of ...
March 19, 2014

science
What type of prac do you think you need to use a filter funnel and filter paper. please help quickly
March 5, 2014

Computer Science
The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the first 50 words, and 8 cents per word for every word after that. Design Visual Logic Flowchart for a program that accepts data about an ad: customer ...
February 20, 2014

General Chemistry
How do the vapour pressure of two substance at the same temperature but with different strengths of the inter-molecular forces compare. Give a molecular explanation of why this is so.
February 5, 2014

Chem
Qc is the reaction quotient. And also, how would i solve this: Calculate the equilibrium concentration of each compound if 0.310 moles of H2 and 0.310 moles of I2 are placed in a 4.30 liter container at 520°C. Kc = 0.190 for the reaction at this temperature.
February 5, 2014

Chem
Calculate the value of Qc for the reaction above if 2.30 moles of NO2, 1.50 moles of NO, and 1.20 moles of O2 are placed in a 3.50 liter container at 30°C. Kc = 0.440 at this temperature.
February 5, 2014

Math
Assume that the rate of population growth of ants is given by the equation: dP/dt=.1P(1 - P/730)-(129000/7300) a. If P(0)=150, what happens to P as t gets very large? b. If P(0)=800, what happens to P as t gets very large? c. If P(0)=800, what happens to dP/dt as t gets very ...
December 11, 2013

Math
∫[dy/(y^2-1)] How do i solve this?
December 10, 2013

Calculus
Solve the differential and initial value problem: x(dy/dx) + 1 = y^2 y(1)=0 I tried using bernoulli and it didn't quite work.
December 10, 2013

Physics
An ocean liner is traveling at 5m/s. A passenger on deck walks towards the rear of the ship at a rate of 4m/s. After walking 30 meters, he turns right and walks at a rate of 4m/s to the rail, which is 12 meters from his turning point. What is his velocity relative to the water...
November 13, 2013

math
Ram Dubey recently purchased a chain of dry cleaners in North Uttar Pradesh. Although the business is making a modest profit now, Ram suspects that if he invests in a new press, he could recognize a substantial increase in profits. The new press costs $ 15,400 to purchase and ...
October 11, 2013

Chemistry 12
The original 10 ml (KIO3) solution is 0.020M is mixed with 10 mL of 0.0020M NaHSO3 which give a total volume of 20 mL. Calculate the concentration of KIO3 in the final mixture of the dilution.
October 2, 2013

English
need complex sentence with cordinate& subordinate
June 24, 2013

math
An electric pole touches the ground due to bending in a wind. It is found that standing part of pole is equal to the distance of end touching the ground. If the end touching the ground from the pole is at distance 4 m, what was the length of pole before bending ?
April 27, 2013

finance
Fashion Distributors Incorporated currently sells on terms of 2/10, net 30, with bad debt losses at 1% of gross sales. Of the 99% of the customers that pay, 50% take the discount and pay on Day l0; the remaining 50% pay on Day 30 (average collection period of 20 days). FDI'...
April 8, 2013

math
This question
March 21, 2013

math
for what value of k are the roots of the quadratic equation (k+4)x*x+(k+1)x+1=0?
March 14, 2013

Algebra
118
March 4, 2013

physics
The light from the sun is found to have a maximum intensity near the wave length of 470nm assuming the surface of the sun as a black body,the temperature of the sun is....
February 28, 2013

physics
You and a friend are going to a river, where they have a rope swing. Your friend, who has a mass of 60 kg, hops on the end of the rope. You tug horizontally on your friend with a force of 300 N, pulling them back until you can't move them any more. Then you let go and ...
February 21, 2013

physics
A cylindrical glass of radius r=3 cm is full of salt water of height h=10 cm with the water's refraction index changing linearly from the bottom n1=1.401 to the top n2=1.400. A flashlight is positioned so that light shines horizontally onto the glass. If we look at the ...
February 21, 2013

physics
Two protons and two positrons form a square as shown in the figure. All the particles are initially at rest. Due to Coulomb's repulsion, the particles fly off to infinity. Determine the ratio vp/ve where vp and ve are the final velocities of the protons and positrons, ...
February 21, 2013

maths
A man is visiting a village where each person either always tells the truth or always lies. There are 5 villagers standing in a row, and the man asks each of them how many of the 5 men standing in the row always tell the truth. Each villager gives an integer answer from 0 to 5...
February 19, 2013

maths
Find the number of triples of integers a<b<c with a≥−10, such that a(b−c)^3+b(c−a)^3+c(a−b)^3=0
February 19, 2013

science
A ski jumper launches from a ski jump that is oriented parallel to a hill. The jump has a vertical drop of 50 m and the coefficient of friction μ between the skier and the jump is 0.05. The launch point is 5 m above the hill and there is a small lip at the bottom of the ...
February 17, 2013

green lawns
With a chemical test differentiate between H2SO4 and H2SO3
February 3, 2013

fianance
can you check my answers if they are correct thank you 1.) A convertible bond is currently selling for $945. It is convertible into 15 shares of common which presently sell for $57 per share. What is the conversion premium? A. $90 B. $45 C. 57 shares D. 13 shares Answer c 2.) ...
January 5, 2013

new India
a number is greater than 3 but less than 8.Also,the number is greater than 6 but less than 10.What is the number?
December 28, 2012

maths --plse help me..
47.2506 = 40+7+.2+.05+.0006 COMPARING WE GET A= 10, D=1 C=.1 , D=100 , E= .0001
December 22, 2012

math
dicks had a 1 day sale. the original bike price was $325. on sale the same bike was $276.25. what is the percent reduction for this sale?? thxx
December 11, 2012

Math
A souvenir mug sells for 8 dollars. Kendra gives the clerk 9 dollars and recieves 56 cents. what is the sales tax rate? Thx!
December 11, 2012

Algebra
10 100 3
December 5, 2012

statistics
6.95 ± 1.96 (.352) =
December 5, 2012

Math
This is right answer but this step is wrong .
November 18, 2012

Human physiology
find effective osmotic pressure of normal saline.
September 25, 2012

AP Physics
A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he accidentally drops his rubber duckie from the gondola of the ballong. Seven seconds after it is dropped the duckie bounces off a roof at point A and hits the...
September 15, 2012

physics
to find the depth of the water surface in a well, a person drops a stone from the top of the well and simultaneously starts a stopwatch. The watch is stopped when the splash is heard, giving a reading of 3.65 s. The speed of sound is 340 m/s. Find the depth of the water ...
September 12, 2012

Physics
34.2 meters
September 11, 2012

Spanish writing
Spanish writing - SraJMcGin, Saturday, August 18, 2012 at 8:49pm Just because the directions say to use the Subjunctive, it does NOT mean to use it everywhere! Your first statement is FACT and therefor there is no Subjunctive! hay muchas, etc. The 2nd sentence says what you DO...
August 18, 2012

Spanish writing
Thanks for your input! I have made corrections and can you please verify if I have followed the rules correctly? Thanks! En los Estados Unidos hay muchas cuestiones políticas. Creo que hay tres cuestiones principales. Los tres cuestiones principales son: el control de ...
August 18, 2012

Spanish writing
Could you please check the grammar of my writing assignment. Thank you very much! Discuss your opinions and ideas about three different popular political issues. Include how you think things should be and what you wish certain people would do about it. Articulate your ideas on...
August 18, 2012

math
a car travels around a horizontal circular track of radius 45m. if the car increases its speed at a constant rate of 1.2m/s starting from rest, determine the time needed for it to reach an acceleration of 1.4m/s. What is its speed at this instant?
August 4, 2012

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