Questions Asked on
June 30, 2012

Essay
Essay: How I surprised my friend on her birthday part. A birthday party is the one day a year, which is very special and unique to everyone in their life. It is a day that should be celebrated with lots of joys and some surprises. Basically, I thought I
asked by Silika 
physics
1. A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can't hear sounds above 20 kHz. To test it, you ask a friend to blow the whistle and hop on their
asked by Emmy Davidson 
chemistry
the ph of a 1.00*10^2 M solution of cyanic acid (HOCN) is 2.77 at 25 C. Calculate Ka and pKa for HOCN from this result.
asked by FB1907 
Physical Geography PLEASE CHECK & HELP WITH #2!
The following questions are based on the “Mt. Dome, California,” quadrangle (Figure 332 found on page 228 of the Laboratory Manual; enlarged to scale 1:48,000; contour interval 40 feet) and the stereogram of the same region (Figure 333 found on page
asked by Sandra 
math
solve the following: ax + by = ab bx  ay = a+b find the value of x and y
asked by Mayank 
pre cal
verify each identity tan(x/2)=tanx/secx+1
asked by angel0 
chem
a steel cylinder holds 1.50 g of ethanol what is the pressure of an ethanol vapor if the cylinder has a volume of 251 cm3 and the teperature is 250 degrees celcius?
asked by meeh 
Chemistry
A 0.22caliber handgun fires a 27{\rm g} bullet at a velocity of 765 {\rm m}/{\rm s}. Part A Calculate the de Broglie wavelength of the bullet.
asked by Anonymous 
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
asked by meena 
chemistry
the dencity of 3 molal solution of NaOH is 1.110g/mL calculate the molarity of the solution
asked by anant 
math
A stationery retailer generally prices portable computers using a 30 percent markup. The retailer expects to sell 100 portable computers at the 30 percent markup. How many units would it have to sell at a 10 percent increase in price from the original
asked by briana 
Chemistry
Calculate the volume at s.t.p. occupied by a gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of at 287K is 12mm of Hg]
asked by Mayank 
maths
if one zero of the quadratic polynomial 4xsquare + 5x+ gama be reciprocal of another zero, find the value of gama.
asked by meren 
pre calculus
Name 3 different representations of the following (6, 3pi/4)
asked by lexis 
chemistry
Naturally occurring cobalt consists of only one isotope Co59 whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt Co60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8516 sample of cobalt has an
asked by Candace 
dynamic
A particle moves along a straight line with an acceleration of m/s2, where s is in meters. Determine the particle’s velocity when s = 2m, if it start from rest when s = 1m.
asked by Adel 
Probability
You have a sample space of 2 events called A and B. From your experimental observations you determine the probability of A or B {i.e. P(A or B)} to be 71%. You also conclusively determine that the probability of A is 30% and the joint probability of both
asked by DLCS 
english
emicolons, Colons, Dashes and Parentheses: Recall Exercise 2. Identify the correct sentence. a) Here's what I'd suggest—major in business; and minor in Spanish . b) Here's what I'd suggest; (major in business and minor in Spanish). c) Here's what I'd
asked by tee 
Chemistry
Calculate the volume at s.t.p. occupied by a dry gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of gas 'Q'at 287K is 12mm of Hg]
asked by Mayank 
economics
I do my classes online and my book is online and it doesn't talk about this at all and i have done called and told my school but they will not fix it please help. JeanBaptiste Say argued that entrepreneurs should be called the fourth factor of production
asked by Wayne 
RES/351
what is the difference between a research question and a hypothesis? I alos need one or more research question and then develop twop appropriate hypotheses?
asked by a 
algebra
Jennifer is on her daily run. After 25 minutes she has gone 1.5 miles. If she continues at the same pace, how long in minutes will her 8.4 mile run take?
asked by Anonymous 
physical science
does a sunken ship sitting on the ocean floor have a buoyant force on it.
asked by lora 
bio
Regulation of an enzyme's activity occurs
asked by Anonymous 
curriculum for early childhood education
the mirror image activity described in your textbook is an example of a/an
asked by Anonymous 
chemistry
How can you precipitate BaCrO4(s) from a solution of barium nitrate and potassium dichromate?
asked by FB1907 
introduction to university studies
how might you use mnemonics in college students and adult learners?
asked by anta 
pre cal
Verify each identity sin^x+siny/sinxsiny=tan(x+y/2) (times) cot(xy/2)
asked by angel 
pre cal
verify identity (sinxcosx)^2=1sin(2x)
asked by Joe 
math
if f'(x)=cos^2x and f(1)=0 then f(x)=
asked by bhavana 
business
identify and explain the objectives of a supplier
asked by melissa 
Algebras
themeanscore on a set of 24 tests in 71. what is thesumof all the test scores?
asked by Anonymous 
Bookkeepinng
I am given a critical thinking question and asked to do a balance sheet for a given month, but the owner put a question mark beside Truck and Accounts Payable in the assests column. How do I handle this part when I am given no other facts about these two
asked by Susan 
algebra1
factor: 64a^248a+9
asked by larry 
physical science
what generally happens to atmospheric pressure on a windy day
asked by lora 
math
In my math book i got a question that said 1/7 times 1/7. I got answer of 2 if my answer is not right can you show me how to do the problem.If my answer is correct still show me how to do the problem
asked by Americal 
maths
how to measure time with a tin can containing water
asked by sandra 
SOC120
what does moral and minima mean by Lenn Goodman
asked by Maryann 
Physics
A comet orbits the Sun with a period of 72.0 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.60 AU from the Sun at perihelion, what is its
asked by James 
Maths
I can't understand this math problem.... Please help me....  Problem: In a boys' school, 5/8 of the boys play football and 4/7 play rugby. If every boy plays at least one of the two games, find the fraction of the boys who play both
asked by John 
english
Hi, I Proofread for wording errors and grammar, but I need help to see if my grammar is proper now. I personally respect every religion, and I love reading holy books. Holy books inspire many people. Holy books taught me many morals and stories on our
asked by zee 
Calculus
Find an equation of the line that is tangent to the graph of f and parallel to the given line. Funtion: f(x)=1/sqrt(x1) Line: x+2y+7=0
asked by Liz 
math
How can i measure or get the correct size of a bicycle rim.
asked by jay 
Math
Im working on a math question and the answer is 2hr and 24min. I am getting 2.4 with my calculations how do i take 2.4 and get 2hr and 24min.???
asked by Becky 
english 121
I need help with my quiz in week 2
asked by colleen 
physics
A truck in driving up the interstate with a constant velocity. Is work being done by a net external force acting on the truck? Justify answer. Why doesn't the work done by the engine pushing it forward make its kenetic energy increase?
asked by Anonymous 
algebra
solve: (x+2)(x11)(x+1)>0
asked by shirley 
algebra
solve: 3/v = 6/v  1/5
asked by shirley 
Sci 230
I need serious help with week 7
asked by Yolanda 
maths
show tha minute hand of a clock gains 5 degree 30 minutes over the hour hand in one minute?
asked by divya 
math
How do you find the reciprocal of 5/3
asked by Cynthia 
math
How to find the reciprocal of 5/3?
asked by Cynthia 
Foreign languages
I urgently need you to check these few sentences, Writeacher. Thank you. 1) What did the U.S Immigration Restriction Act prohibit (Can you help me find a synonym?) It prohibited the immigration of those with hereditary illnesses and entire ethnic groups.ù
asked by John