# Posts by pooja

Total # Posts: 81

Science
Write the balanced chemical reactions using the appropriate symbols?

integrated science
what is soil profile?

Physics
Three particles have charges +20?C each.They are fixed at the corners of an equilateral triangle of side 0.5m .The force on each of particle has magnitude

math
A solid wooden cube is painted blue on the outside. The cube is then cut into 27 smaller cubes of equal size. What fraction of the total surface area of these new cubes is blue?

Biology
If gene frequency for PTC nontaster is 0.4, then what will be the number of heterozygotes tasters in a population?

Math
Find area of rectangle whose length is 3 cm and 1 diagnal is 5 cm

science
What is the balanced molecular equation for titration of oxalic acid?

physics
Whn sand is poured on a rotatory disc what happens to its angular velocity. Explain

Maths
The circumference of a given circular park is 55m.it is surrounded by a path of uniform width 3.5m.find the area of the path

science
SIO2

Math
I am a 3 digit number whose tens place is 5 more than the ones and hundreds place is 8 less than the tens place. Who am i

If alpha
If alpha& beta are the zeroes of the polynomial 2x2-7x+3. Find the sum of the reciprocal of its zeroes

physics
what will be the speed of a 500 kilogram satellite if we apply 100N force on it after each second till 10 hours.the current velocity of this satellite is 16,800 miles per hour?

maths
Determine the value of log 18/12 + log 8/12?

Math
first you must go and watch ur face in the mirror and then tell ur self that

maths
IF the sum of areas of two squares is 610msquare and the difference of their perimeters is 32m,then find the lengths of their sides?

maths
Show that log(1+2+3)=log 1 + log 2 + log 3( with the formula)?

maths
in d given figure,AB=12cm and pt=8cm.if PAxPB=PTsquare(square is only for PT), then write a quadratic equation for finding the length of PA?

Chemistry
Show that the reaction caco3 ->cao+co2 is not a redox reaction

math
If there are two farmers who have grown grass in the circular field then what should be length of rope so that equal crop is distributed to both if rope is tied at the center of the circular field if r is radius of the circle

programming
Write a Java application that computes and prints the grade of a student according to the following algorithm: 1) It should read from the user TMA score and MTA score. 2a) If their sum is less than 15, the grade "FC" should be printed and the program will stop. 2b) ...

Chemistry
A biochemical engineer isolates a bacterial gene fragment and dissolves a 15.1 mg sample of the material in enough water to make 32.7 mL of solution. The osmotic pressure of the solution is 0.340 torr at 25°C. a) What is the molar mass of the gene fragment? b) If the ...

maths
An isosceles right triangle has a hypotenuse of 18m. Find the other two sides?

chemistry
26calk/mol

probability
consider the experiment of the rolling a pair of fair dyes 1white and the other red are the events (a)doubles is rolled (b)The red is shown two or three,independ

Science
How do I draw a particle diagram to show how ear defenders work?

science
A Boy of mass 25 kg climbs atop a playground slide of height h= 3 m. When the boy slides down the inclined board, the work done to overcome friction is 550 Joule. What is the boy’s speed before he touches the ground.

chemistry
1.64 L of a 4.95 M solution is diluted to form a 2.58 M solution. (Rounded to 3 sig figs) there are __________ L of the 2.58 M solution formed.

chemistry
concentrated aqueous sulphuric acid is 98% sulphuric acid by mass and has a density of 1.80 g/l. Volume of acid required to make one litre of 0.1M sulphuric acid solution is

physics
a 125 cm long string has a mass 2.0g and it is stretched with a tension of 7.0 IN between fixed support

6th math
3.250kilogram

math
what is the common ratio for this geometric series? 15 11 7 3 .5

chemistry
1.what is meant by atomic number of an element? 2.the mass number of an element is 18,it contains 7 electrons.what is the number of protons and neutrons in it?what is the atomic number of the element? 3.an element has an atomic number of 11 and its mass number is 23?what is ...

chemistry
this questions are related to class9 and the academic sessions hasn't started but since i'm n IIT student we have been given a lot of assignment for the holidays and the portion has to be done. so it would be alot of help if you help me. PLEASE HELP ME I NEED IT

chemistry
1. name the three fundamental particles present in an atom? mention the masses of the particles in M.K.S. system? 2.what is a proton? stste its relative mass and charge? 3.how many times a proton is heavier than an electron? 4.what important information are furnished about the...

chemistry
1 the mass of one mole of electron is ...... mg. 2 copper(I) ions contains .......... electrons in its 3rd orbitals 3 if both K and L shells of an atom are full,what is the total number of electrons contained in them? 4 what is maximum number of electrons which can be ...

chemistry
1state relative mass and charge of an electron 2 an atom of an element X may be written as 4X^9 (a)What does the figure 9 indicate? (b)what is the number of protons in an atom X? (c)what is the number of electrons in an atoms X? (d)what does the number 4 indicate? 3 describe ...

english
whole history from early man to indus valley civilization.

chemistry
1 The size of cation is ...... and the anion is ........ than atom. 2 The removal of an electron from an atom results in the formation of a ....... the size of which is ........ than that of the atom.

chemistry
what is the shape of p-orbital.........

chemistry
Mg+2 is isoelectronic species with ................ (give 2 species)

Physics
In its own frame the average pi meson lives 2.60 x 10^-8s. Suppose it moves at 0.985c relative to the Earth. According to us, on Earth, what is a pi meson's average lifetime? (b) according to us, what is the pi meson;s average travel distance before decaying? (c) If time ...

maths-probability
The diagram shows a spinner with six numbered sections.(where it has number 2 twice, # 1 triple & # 6 once ) Some of the sections are shaded. Each time the spinner is spun it stops on one of the six sections. It is equally likely that it stops on any one of the sections. (a)...

biology:plz someone help
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine during such an ...

biology:plz help
state the name for the action of two oppposing miscles, such as the biceps and the triceps.

biology
humans have a double circulation system. there is a low pressure circulation and a high pressure circulation. (a) explain how the structure of the heart enables it to pump blood into two circulations at different pressures

biology
The heart lung machine is used so that surgeons can oprate on the arteries supplying heart muscle.the arteries may be diseased. (a) Name these arteries and explain how they may become diseased (b) suggest why a patient is put on a heart lung machine during such an operation.

biology
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine during such an ...

physics
Why is Tangential acceleration equal to alpha*Radius?

maths
from the top of a light house the angle of depression of a ship sailing towards it was found to be 30 degrees . after 10 seconds the angle of depresion changes to 60 degrees. assuming that the ship is sailing at uniform speed. find how much time it will take to reach the light...

geometry
In Triangle ABC, AD is median. If AB is 8, BC is 18, AD is 7, find AC

science
how far a science satellite should be from the earth's surface.

maths
cos(a+b)=m(cos(a-b) then tan a=?

Intro to chem
Thank you SO MUCH!

Intro to chem
What is the volume of 19.7g of oxygen at STP? Heres what i got but did not get the same answer..pls tell me where i am wrong! (grams to moles) 19.7g x 1 mol/ 16.00 = 1.23 mol Oxygen (Pv=nRT) looking for V 1.23 mol x 0.0821 x 273K / 1.00 atm = 27.57 CORRECT ANSWER is 13.8L!

US History
What are proposals for new laws called?

math
DRAW a line l construct a line p such that lparallel ro p is at a distance of 3.5cm from l

First we have to calculate the seconds ... 34min*60s=2040s therefore, 2040s/9.8m= its may be about 208.16m . They walked...

Physics
How do the initial and final horizontal velocities of a projectile compare?

Physics
What factors affect the period of a pendulum?

Physics
Thank You!!

Physics
How do you determine the average velocity on a position-time graph?

Physics
Thanks!

Physics
Lisa drops a stone from a wall that is 7.00m from the ground. How long is the stone in the air?

chemistry
When 10.g of NaCl is reacted completely with 65g of Pb(NO3)2 according to the following reaction? How much (grams) of PbCl2 can be produced? 2 NaCl + Pb(NO3)2 ----> PbCl2 + 2 NaNO3

english
i have to write on a topic for about 300-400 words . topic is 'IS HOMEWORK HARMFUL OR HELPFUL'

English
start with the word cage.make a new,two syllable word by replacing one le1tter with a different letter.

Math
It is a 5 digit no. ,palindrome,divisible by 4,10 digit is cube root of 1 digit,product of 100 digit and 1 digit is 54 ,sum of hundred and ones digit is 15.what is the number?

3x 6=2x 13 3x-2x=13-6 1x=7 x=7/1 x=7

maths
a floor is 5m long and 4m wide. a square carpet of 3m is laid on the floor. find the area of the floor that is not carpeted

Physics
Hi guys, Im a bit stumped on how to solve an online physics homework problem and it's really bothering me. I have no idea how to come up with the angles or even attempt the problem and neither do my friends. We'd all really appreciate it if someone could help us. Many ...

Math
A bag contains 2 red, 2 blue, and 2 green marbles, Sue takes one marble at a time from this bag without looking. What is the least number of marbles Sue must take from this bag to be sure that she has taken 2 marbles of the same color? A) 2 B)3 C)4 D)6

Math
The product of 1000 whole numbers is 1000. What is the largest possible value the sum of these numbers can have? A)1000 B)1992 C)1993 D)1999

Math
In the list of numbers 1,2,3,4,5,6,7,8,9, how many of the numbers in the list are exactly 2 more than some other number in the list? A)2 B)7 C)9 D)11

Math
In a list of the numbers 1,2,3,4,5,6,7,8,9 how many of the numbers in the list are exactly 2 more then some other number in the list?

Math
What is the largest number which is both less than 2*3*5*7 and also a divisor of 2*3*5*7

science
what is brain

science
why do plants bear fruit?what are plant tissues?