Tuesday
September 2, 2014

Posts by anil


Total # Posts: 60

math
4( x-2) metres of rope is used to fence this rectangular enclosure.Find x
July 23, 2013

Statistics - Please help
Here are the monsoon rains (in millimeters) for the 23 strong El Nino years between 1871 and 2004: 628 669 740 651 710 717 698 653 604 781 784 790 811 830 858 896 806 790 792 957 872 a. To make the stemplot of these rainfall amounts, round the data to the nearest 10, so that ...
January 14, 2013

statistics
El Nino and the mosoon. The earth is interconnected. For example, it appears that El Nino, the periodic warming of the Pacific Ocean west of South America, affects that the monsoon rains that are essential for agriculture in India. Here are the monsoon rains (in millimeters) ...
January 14, 2013

Math
If52 men can do a piece of work in 35days in how many days 28 men will do it?
December 14, 2012

Math - 8th grade
65 days
December 12, 2012

physics
If M and m are particles connected by light inextensible string. M is held at center and rotated about horizontal axis as M is in equilibrium.What is torque ABOUT ITS CENTER
October 5, 2012

physics
Two tugboats are towing a ship.Each exerts a force of 6000 N and the angle between two ropes is 60 degrees.What is the resultant force on the ship?
September 26, 2012

Science Dr. Bob222
I don't know how to find the specific heat in q1. I have q1 = 320 (specific heat) #2) How do I find heat vaporitzation for q2?
September 3, 2012

Science
Ten pounds of liquid water is at a temperature of 180 degrees F at standard atmospheric conditions. Determine the energy required to convert this to water vapor (steam) at a temperature of 212 degrees F.
September 3, 2012

math
A lawn sprinkler covers a rectangular pattern of 20ft x 30ft. 1)If the flow rate of the sprinkler is 2.5 gpm, derive a formula for calculating the time (hours) to apply D inches of water over one 20ft x 30ft area. 2)What are the units on the constant?
March 31, 2012

math - help please
A lawn sprinkler covers a rectangular pattern of 20ft x 30ft. If the flow rate of the sprinkler is 2.5 gpm, derive a formula for calculating the time (hours) to apply D inches of water over one 20ft x 30ft area. 2)What are the units on the constant?
March 30, 2012

math
A lawn sprinkler covers a rectangular pattern of 20ft x 30ft. 1)If the flow rate of the sprinkler is 2.5 gpm, derive a formula for calculating the time (hours) to apply D inches of water over one 20ft x 30ft area. 2)What are the units on the constant?
March 30, 2012

algebra
solve e^x / 3 = 5^x using logs.
December 3, 2011

math
A triangle has an angle whose sine is equal to sq rt 2/2. The angle is larger than 52 degrees in measure. Find the EXACT measure (in degrees) of the angle.
November 25, 2011

Econ more help please
See question below at **** Suppose local govt decides that a tax is the best way to address the inefficiency created by outdoor concerts. Assuming the social cost curve and the private cost curve are parallel to each other, how much does the tax on concerts have to be to ...
November 14, 2011

Econ - urgent please help
Suppose local govt decides that a tax is the best way to address the inefficiency created by outdoor concerts. Assuming the social cost curve and the private cost curve are parallel to each other, how much does the tax on concerts have to be to achieve the socially optimal ...
November 14, 2011

Econ please help
Suppose local govt decides that a tax is the best way to address the inefficiency created by outdoor concerts. Assuming the social cost curve and the private cost curve are parallel to each other, how much does the tax on concerts have to be to achieve the socially optimal ...
November 13, 2011

algebra
Town has popultion of 5,000.Number of people infected after t days with a disease is N(t) = 5000/1 + 21.7e^-0.4t Find number initially infected find number infected after 12 days
November 6, 2011

algebra
Pa^t and Pe^rt are two forms of the same exponential function. One would expect to obtain the same answer for f(18). Explain why you may not get the same answer for f(18) in practice.
November 5, 2011

math - another ? - exponentials
The two formulas f(t) = Pa^t and f(t) = Pe^rt provide two models for the same exponential growth or decay function. How are the exact values of a and r related? (Hint: Find a formula for a as a function of r)
November 4, 2011

algebra - exponentials
Pa^t and Pe^rt are two forms of the same exponential function. One would expect to obtain the same answer for f(18) (after finding P and a and P and r). Explain why you may not get the same answer for f(18) in practice.
November 4, 2011

algebra
$7,000 is invested into two accounts: 4,000 into an account paying 5% interest compounded monthly and $3,000 into an account paying 4.1% interest compounded continuously. compute the total interest earned at the end of 2 years.
October 31, 2011

Math - logs
I need help solving this because it involves 2 bases: log (base 2) [log (base 5) 25]= ???
October 29, 2011

algebra
rectangular open-topped box is made from a 9 x 16 piece of cardboard by cutting x-inch squares out of each corner and folding up the sides. What size square should be cut out to produce a volume of 120 cubic inches?? I set it up with 120 = (16-2x)(9-2x)(x) I get to y = 2x^3 - ...
October 16, 2011

Geometry
2. This cone bottom tank is the perfect solution for transporting chemicals such as pesticides around to various locations. The cone shape of this plastic tank equips it not only for easy draining of materials, but also provides an easy cleaning process. a. What is the volume ...
October 13, 2011

Geometry
An engineer designed a 620 ft long water canal to drain a rainwater detention pond. It is to have a trapezoid cross-section that is 8 ft deep, 15 ft across the bottom, with walls sloping outward at an angle of 40. (a)Calculate the volume of earth that needs to be ...
October 12, 2011

Maths
The fuel rods for a certain type of nuclear reactor are bundled into a cylindrical shell. Consider this cross-section showing 19 identical fuel rods: a) If the diameter of the one rod is 2.8cm, calculate the shaded area of the cross-section. b) If the length of the cylindrical...
October 12, 2011

algebra
So if the distance and height are reachable, why are these equations poor models of hitting a baseball: y = -0.5x^2 + 216x + 3 y = -0.002x^2 + 0.879x + 3.981 y = -0.002x^2 + 0.8732x - 3.981
October 8, 2011

algebra
why are these equations poor models of hitting a baseball: y= -0.002x(x-433.1) I get maximums of (216,93). Other problems' maximums are in the (220, 100)range. So are they poor models because the distance and heights are unreasonable? 2) Why is the constant a in y=ax^2 + ...
October 8, 2011

algebra
In a real-life situation, to model the distance x and the height of hitting a baseball y as in: y = ax^2 + bx + c 1. When dealing with the initial height of the ball, what is happening when x = 0? Is it that the ball has not yet traveled any distance? 2. What are the possible ...
October 8, 2011

mba
Find the maximum and minimum values of the following function. 8x3 – 75x2 + 150x
October 8, 2011

physics
What happens to the size of a hole in a metal plate when the plate is heated / cooled
October 4, 2011

physics
How do we compensate for thermal expansion /contraction in the construction of railway tracks? How do we compensate for thermal expansion /contraction in the construction of steel bridges? How do we compensate for thermal expansion /contraction in the construction of metal ...
October 4, 2011

physics
Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum
October 4, 2011

physics
At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)
October 4, 2011

physics
A liquid expands on heating. Explain briefly how its density will change with rise in temperature
October 4, 2011

physics
liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found to first fall and then rise why ?
October 4, 2011

physics
Name Two solid materials having very low linear expansivity ?
October 4, 2011

MBA I/ Semester I math
Differentiate following with respect to x f(x) = (3x^2 – 5ax + a^2)^4
October 4, 2011

physics
What happens to the size of a hole in a metal plate when the plate is heated / cooled
October 4, 2011

physics
How do we compensate for thermal expansion /contraction in the construction of metal pipes for carrying steam?
October 4, 2011

physics
How do we compensate for thermal expansion /contraction in the construction of steel bridges?
October 4, 2011

physics
How do we compensate for thermal expansion /contraction in the construction of railway tracks?
October 4, 2011

physics
Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum
October 4, 2011

physics
At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)
October 4, 2011

physics
A liquid expands on heating. Explain briefly how its density will change with rise in temperature
October 4, 2011

physics
Name Two solid materials having very low linear expansivity ?
October 4, 2011

physics
liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found to first fall and then rise. why?
October 4, 2011

MBA I/ Semester I math
Differentiate following with respect to x. (3x2 – 5ax + a2)4
October 4, 2011

mba
Differentiate following with respect to x. (3x2 – 5ax + a2)4
October 4, 2011

physics
If velocity v of particle moving in straight line is related with distance travelled S as v=2(1+S)^1/2. Find the acceleration of the particle.
July 20, 2011

physics
A partical is projected vertically upward with speed 20 m/s. What will be the time after particle is at a height 15m above the ground( g=15 m/s*s)
July 20, 2011

physics
A non stop bus goes from one station to another at a speed of 54 km/h. The bus returns from the second station to first station at a speed of 36 km/h. Find the average speed of the bus.
July 3, 2011

geometry
find the equation to the plane through the point (-1,3,2) and perpendicular to the plane (x+2y+2z=5) and (3x+3y+2z=8)
February 24, 2011

math
first of all multiply 11 by 3 we get 33 now we add 1 to 33 , we get 34 so the result is - 34 / 3 the negative sign is with the whole term so it will remain with the whole fraction
February 23, 2011

physics
2.5 kg rifle fires a 20 g bullet at 400 m/s. Find magnitude of the recoil velocity of the rifle.
February 7, 2011

physics
Star Z has 1/5 the radius of Earth and 1000 times the Earth's mass. If a mass weighs 1.0 N on Earth, what does it weight on Star Z? Thank you.
January 25, 2011

physics
A chain of length l and mass ë per unit length is fully open and is held on a high frictionless table with y1 of its length hanging from the side of the table as shown in figure. When released, it starts slipping off the table. By calculating the speed of the chain as it ...
October 29, 2010

physics
A small stone of mass m is stuck on the periphery of a wheel of radius R rolling along the x-axis with a constant speed v. The centre of the wheel was at x = 0 at time t = 0, and stone was on the ground at that time. Find the angular momentum of the stone and its rate of ...
October 23, 2010

social studies
1-b,2-c,3-c,4-d, 5-a, 6-b, 7-a
October 8, 2010

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