Thursday
March 30, 2017

Total # Posts: 76

math
One third of seema,s pocket money is Rs 2.How much does she get?
February 18, 2017

math
Taking the speed of the radio signal as 3×108 m/s, calculate the time taken for a signal to reach a GPS receiver from a GPS satellite at a position 21 000 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path length. Express ...
December 6, 2016

??????
A 8.4-kg block is lifted vertically 9.0 m at constant speed by a boy. The work done by the boy is about:
November 23, 2016

Science
A 8.8-kg object is moving at 5.3 m/s. A 7.4-N force is applied in the direction of motion and then removed after the object has traveled 4.7 m. The work done by this force is:
November 23, 2016

chemistry
1.2E-4 mols/kg
November 5, 2016

Chemistry
Acid in vinegar has pka value of 1.85 x 10^-5 at 25oC find the pkb value of its conjugate base?
April 7, 2016

math
A bear was seen near a campground. Searchers were dispatched to the region to find the bear. A)Assume the bear can walk in any direction at a rate of 2 miles per hour. Suppose the bear was last seen 4 hours ago. How large an area must the searchers cover? Use 3.14 for pi. ...
January 8, 2016

physics
A disk with a rotational inertia of 1.4 kg×m2 and a radius of 0.8 m rotates on a frictionless fixed axis perpendicular to the disk faces and through its center. A force of 5.2 N is applied tangentially to the rim. The angular acceleration of the disk is:
December 31, 2015

Myerson borrowed \$8,500 at 9% ordinary interest for 200 days. After 120 days, he made a partial payment of \$4,000. What is the final amount due on the loan?
November 19, 2015

chemistry
draw a diagram showing the arrangement of the valency electrons in a molecule of the covalent compound arsine,ash3 use o to represent an electron from aresenic
November 14, 2015

Math
2 water pipe inlets pumping water into a tank. Pipe "A" fills up the tank in 30 minutes. Pipe "B" fills up the tank in 90 minutes. Assuming both pipes are on. How long it will take to fill up the tank.
September 18, 2015

Math
The volume of a block of a gold is 0.5 m sqare. if it is hammered into a sheet to cover an area of 1 hectare,find the thicness of the sheet.
August 31, 2015

Math
The parallel sider of a trapezium are 25 cm and 11 cm, while its nonparallel sides are 15 cm and 13 cm. find the area of the trapezium.
August 31, 2015

science
A hawk flies in a horizontal arc of radius 12.0 m at a constant speed of 5.4 m/s. It continues to fly along the same horizontal arc but increases its speed at the rate of 2.8 m/s2. Find the acceleration magnitude under these conditions.
August 6, 2015

physics
A ball is projected upward at time t = 0.0 s, from a point on a roof 40 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 15.4m/s. Consider all quantities as positive in the upward direction. The time when the ball ...
May 13, 2015

chemistry
value and formula Ksp Of : -PbI2 -CdS -Ca(OH)2 -Ag2CrO4 -Cu2S
March 26, 2015

science
home / homework help / questions and answers / science / physics / the temperature of an ideal gas at an initial pressure ... Question The temperature of an ideal gas at an initial pressure P1 and volume V1 is increased at constant volume until the pressure is doubled. The ...
January 8, 2015

maths
home / homework help / questions and answers / science / physics / the temperature of an ideal gas at an initial pressure ... Question The temperature of an ideal gas at an initial pressure P1 and volume V1 is increased at constant volume until the pressure is doubled. The ...
January 8, 2015

Mustapha
The oxidation number of kromium in k2Cr2O7
November 8, 2014

physics
A 22-N force, parallel to the incline, is required to push a certain crate at a velocity of 6.1 up a frictionless incline that is 55° above the horizontal. The mass of the crate is:
November 5, 2014

Physics
Two springs, each with spring constant 20 N/m, are connected in parallel, and the combination is hung vertically from one end. A 10-N weight is then suspended from the other end of the combined spring. How far does the combined spring stretch as it comes to equilibrium?
October 27, 2014

physics
A soccer ball rolling across a field with an acceleration of -0.5m/s/s rolls 12.5 m and then comes to a stop after 8 seconds. What was the ball's initial speed?
September 24, 2014

java
write a program thatprint on secreen the reselt of the following series: d=1+2/x^2+3/x^3+.....r/x^r . thanks
August 10, 2014

CHEMISTRY
18.75L
June 9, 2014

c++
Write a C++ program that reads the population of town A and its growth rate as well as the population of town B and its growth rate. It outputs after how many years the population of town A will be greater than that of town B and the values of their population at that time.
June 4, 2014

c++
Write a C++ program that reads the Capacity (in gallons)of an automobile fuel tank, and Miles per gallon this automobile can be driven. It outputs the number of miles this automobile is driven without refueling
May 17, 2014

UOS
Write a C++ program that reads the Capacity (in gallons)of an automobile fuel tank, and Miles per gallon this automobile can be driven. It outputs the number of miles this automobile is driven without refueling .
May 17, 2014

ans is bias-free language.
May 4, 2014

I or we is the answer.
May 4, 2014

chemistry
a compound contains only carbon hydrogen and oxygen analysis of a sample showed that it contained by mass 53.4% carbon and 11.1% hydrogen . what is the simplest formula for this compound .. step by step plese
February 19, 2014

Science (Physics)
Gravity on the surface of the moon is only 1 6 as strong as gravity on the Earth. What is the weight of a 30 kg object on the Earth? The acceleration of gravity is 10 m/s 2 . Answer in units of N What is the weight on the moon? Answer in units of N What is the mass on the ...
November 18, 2013

Finance
Consider the following information and calculate the required rate of return for the Winkler Investment Fund. The total investment fund is \$2 million. Stock Investment Beta ----- ---------- ---- A \$ 200,000 1.50 B 300,000 -0.50 C 500,000 1.25 D 1,000,000 0.75 The market ...
July 19, 2013

calculus (point me in the right direction please?)
f'= 3x2 + 8x f'(5)= 3(25) + 8 (5)= =75+40=115 so u replace x by 5 in fx and u substract
July 19, 2013

finance
r= 3.5+1.08(10-3.5)
July 7, 2013

chemistry
calculate the pH of a 0.50 m solution of HCN. Ka for HCN is 4.9*10^-10 (The chemical equation for this.)
April 9, 2013

physics
A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circle. Assume that the total energy of the ball-Earth system remains constant. (a) What is the tension in the string at the bottom? (Use the following ...
March 18, 2013

Chemistry
Thanks you Dr.Bob222. So the overall idea is that dissociation decreases molar mass and association does the opposite when a solute dissolves in a solvent. (How do you identify if either reaction occurs? Just wondering.)
February 2, 2013

Chemistry
So in this case, that a small amount of your unknown failed to dissolve in the t-butanol, it would effect the molar mass, just depending on the mass of both substances?
February 2, 2013

chemistry
Lab on Determining hard water Not sure if I answered this currently, not completely sure how to explain either. If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated [EDTA] be correct, too ...
January 18, 2013

chemistry
Lab on Determining hard water Not sure if I answered this currently, not completely sure how to explain either. If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated [EDTA] be correct, too ...
January 17, 2013

MSD
Pat and Kris are roommates. They spend most of their time studying (of course), but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2 hours to make a pizza. Kris takes 6 hours to brew a...
November 3, 2012

physics
1414.2
September 5, 2012

MATH
x/9 < or = -3 x times 1/9 < or = -3 x< or = -3/1/9 x< or = -27 sorry i don't have the symbols on my keyboad, but i hope this helped
April 25, 2012

Algebra 1
m= y2-21/x2-x1 m= -6-(-4)/4-6 m=-2/-2 therefore m= 1 the answer is b) good luck :)
April 25, 2012

Chemistry
Calculate the amount of heat required to take 3.00kg of ice at -10 degrees Celsius to 115 degrees celsius.
April 25, 2012

Mr. Hightower recorded the amount of each project that had been completed at the end of the week. The line plot describes the information he recorded. What fraction of the projects were complete?
April 19, 2012

physics
When driven by a 120 Hz vibrator, a string has transverse waves of 31 cm wavelength traveling along it. (a) What is the speed of the waves on the string& (b) Is the tension in the string is 1.2 N, what is the mass of 50 cm of the string?
April 17, 2012

physics
Two blocks with masses m1 = 7 kg and m2 = 4 kg are connected with a rope and move on two surfaces of a right-angled wedge as shown in Fig. 6.6 Given that θ1 = 37 °, θ= 53°, μ= 0.2, and μ= 0.1, find the acceleration of the blocks
April 1, 2012

Mechanics M1
A rabbit runs in a horizontal straight line ABC across a field (a)the rabbit runs from rest at A with a constant acceleration of 0.8 m/s^2 and reaches B after 3 seconds, find its speed at B
March 7, 2012

Physics
60 kg * 5 m/s + 40 kg * 0 m/s = (60 kg + 40 kg) * v_final 300 kg*m/s = 100 kg * v_final 3 m/s = v_final
February 21, 2012

math
The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
October 28, 2011

math
The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
October 28, 2011

geometry
if a measure of an angle is -2x^2+19x and the measure of it's supplement is 4x^2-6 what's the measure of angle and supplement
October 17, 2011

statistics
1. Use the following information about a group of college students: Fifty percent are taking Algebra. Sixty percent are taking Biology. Thirty percent are taking both Biology and Algebra. A student from the group is selected at random, calculate the following: a) The ...
September 18, 2011

physics
tell me
March 17, 2011

chm
Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride required to plate 195 of pure silver.
February 10, 2011

English
what is the meaning of the heaven were let loose
December 4, 2010

physics
I want the answer. Where is it ?
November 7, 2010

Physic
I am having trouble with some of this question. 'A student standing at the top of a cliff shoots an arrow from a height of 30.0 m at 25.0 m/s and an initial angle of 32.0 degrees above the horizontal. b. How high above the landscape under the cliff with arrow rise? assume ...
January 11, 2010

Art
Okay! Thank you so much
November 7, 2009

Art
I can see the motion which is the line for visual element and i can see the balance in design element... Am i right?
November 7, 2009

Art
Okay but what are the elements in it? i mean in that painting for visual element is it the color ? and for design element is it balance?
November 7, 2009

Art
Yes , what i mean is for 1.Visual element (line,shape and mass, color, light, texture and pattern, space,time and motion) 2.Design element ( unity and variety, balance, emphasis and subordination, scale and proportion, rhythm) So what i need is to find one painting that ...
November 7, 2009

Art
i need to choose a paint where design element and visual element in 1 paint could you help me to choose that paint and telling me what elements in it thank you
November 7, 2009

biochem
answer is 1,638,400 18 generations original is not included
September 24, 2009

science
How does a doorbell work?
May 20, 2009

Math - natural log
Express the given quantity as a single logarithm. ln(1+x^8)+ln(x)- ln(sin(x))
January 24, 2009

communications
comper btween informative, persuasive,and positive messages
November 6, 2007

AP CHEM!
ROFL YOU'RE STUPID we're doing this in class right now.... :/
April 3, 2007

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