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Posts by Meena

Total # Posts: 37

maths
of 3 numbers average of first and second number is greaterthan average of second and third number by 39 then what is difference between first and third number

maths
a tank is 3/5 empty when 26 liters of water added it becomes 12/17 full what is capacity of tank

math
the digit at the tens place of a 3 digit number is 4 more than the digit at its once place

Algebra
A worker drops a hammer from a second story roof that is 10m above the ground. Choose the appropriate formula to use where t represents time in seconds after the hammer is dropped. h(t) = -16t2 +v0 (Initial Velocity) + h0 (Initial Height) or h(t) = -4.9t2+v0t (Initial Velocity...

education
What support structures do you think need to be in place for junior's to succeed at Reardan? what does this question mean? thank you

maths
a ladder 12 m long rests aganist a wall if it reaches the wall at a height of root 63m then find the angle of elevation

Math
All right Cone has the volume of 333 yd.³ if a right cylinder had the same height and base what would be the volume off the cylinder?

science
what is the change in momentum when a body dropped from a height of 20 m and hits the ground and rebounds with the same speed?

Physics College
A heat engine operates in a Carnot cycle between 78.0°C and 340°C. It absorbs 22,000 J of energy per cycle from the hot reservoir. The duration of each cycle is 3.00 s. (a) What is the mechanical power output of this engine? (answer in kW) (b) How much energy does it ...

Math
Angela and Doreen each want to by the same comb. Angela still needs 58cents to by the comb and Doreen still needs6cents. If they were to combine their money, they still do not have enough. What is the most the comb could cost?

Chemistry
C3H8 = Propane. C3H6O = Acetone Propane. I'm not sure if it is the same...

Chemistry
What is the number of double or triple bonds in the formula C3H8? What is the number of lone pairs Around each atom? And what is the number of single covalent bonds? I also need help with the formula C3H6O with the same questions! For C3H8 I got 10 single covalent bonds. And ...

maths, social studies, english, geography, histroy, agri-science,
What job could I get

English 3
They seem right? Even the 3rd one :0

English 3
thank you 1) the third choice? 2)the first one? 3)the first one one or the last one? 4)the last one? 5)the first one?

English 3
Question 1 “When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of ...

Science
You are given 10 µL of a DNA stock solution that has 1.0 µg target DNA/µL. The target DNA molecule is 2.9 kb in length. Describe a set of serial dilutions that would yield a standard curve with the following concentrations: 2 x10^7 copies/µL, 2x10^6 ...

physics
two points of charge values Q and q are placed of x and x/2 respectively from third charge of value 4q, all charges being in the same straight line. calculate the magnitude and nature of charge Q such that the net force experienced by the charge q is zero?

English ASAP
Can you please explain exactly the meaning. What does this poem mean and how does it relates to people decision. I need to write an essay about it. Whatever we do, whether we light strangers’ cigarettes—it may turn out to be a detective wanting to know who is free ...

English Please help ASAP
What does this poem mean and how does it relates to people decision. I need to write an essay about it. Whatever we do, whether we light strangers’ cigarettes—it may turn out to be a detective wanting to know who is free with a light on a lonely street nights— ...

chemisrty
how to prepare 40% of Nitric acid from 70% of the Nitric acid solution

chemistry
how to prepare 24 μL of 5% H3BO3

science
how to prepare 24 μL of 5% H3BO3

physics
a rubber ball of mass 50g falls from a height of 10 cm and rebounds to a height of 50 cm .determine the change in the linear momentum and average force between the ball and the ground taking time of contact as 0.1 sec

Statistics
Test a claim p=0.5 with the significance level of 0.05 and n=49 calculate beta when the true probability porportion is 0.7.

maths
a)-5/12-(-7/12) -5/12+7/12 2/12 1/6 b) -5/12-0 -5/12 c) -5/9-7/9 -12/9 -4/3

statistics
in a batch of 15 students failed in a test. the marks of 10 who have passed were 9,6,7,8,8,9,6,5,4,7.find the median of all 15 students.

Pre-Calculus-Trig
tan x=h/¡Ì3h tan x=1/¡Ì3 tan x=30¡ã the angle of elevation is 30¡ã

speech
it is not the trophy won but the race run that matters-SPORTSMANSHIP

history
we are doing this debate. i am on the history team. why is history more important than math, art (lit included), social sciences, natural sciences. and what are those subjects' flaws

Religion
Thanks

Religion
& when is The Hail Mary usually used?

Religion
I`m not catholic so I need some help. I need a quick catholic prayer. A well known one that's kinda short, I need to include it in my essay. If you could help me out that would be great.

Chemistry
how would i calculate the H+?

Chemistry
Calculate the percent dissociation of acetic acid (Ka = 1.8 x 10-5) in a solution containing 0.00973 M CH3COOH and 0.0124 M K(CH3COO). Report your answer to 2 significant figures. Thanks!

Chemistry
nope, the equation given is all aqueous.

Chemistry
3Ca(CH3COO)2(aq) + 2H3PO4(aq) ¨ Ca3(PO4)2(aq) + 6CH3COOH (aq) reduce in net ionic form... how do you know what to separate? for example, how would i know to separate Ca and PO4 or to keep it together??

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