Thursday
June 30, 2016

Posts by ANONYMOUS

Total # Posts: 98,011

physics
A motorcycle/rider combination has a center of mass that is half a meter diagonally upward and in front of the point of contact between the wheel and the road at an angle of 30 degrees when the bike is level. What acceleration is necessary to keep the bike tilted up stably ...
June 29, 2016

Chemistry
What will the pH of a solution be when 0.5447 L of NaOH (pH = 14.436) is added to 0.357 L of 2.01 M ascorbic acid (H2C6H6O6)? Not sure how to do this.
June 29, 2016

Algebra
My question is related to this algebra question. Could you kindly explain how did you get the father's age? Pls.
June 29, 2016

U.S History
How much did the availability of resources aid in industrialization? Why?
June 29, 2016

Math
Workers in a certain company are required to 8% of their salary into a social security fund. Mr Doe has a monthly salary of GH¢22.00 . How much does he pay into the fund every month? And every year?
June 29, 2016

Algebra
car a leaves phoenix heading north at a constant speed of 40mph car b leaves two hours later and follows car a at a constant speed of 54 mph how many hours does it take car b to catch up to car a? algebra
June 29, 2016

math
grassland-29% wilderness-9% urban-2% wetlands-3% forest-30% cropland-17% if humans use half of forest and grassland plus all cropland and urban areas how much land is used by humans. is it 48.5%
June 28, 2016

math
if 2sinx=1,π÷2<x<π and √2cosy=1, 3π÷2<y<2π, find the value of tanx + tany÷ cosx - cosy
June 28, 2016

maths
A projectile is thrown with a velocity of 2om/s at an elevation 30°.Find the greatest height attained and the horizontal range.
June 28, 2016

math
i have four hundreds. i have one more tens than i have hundreds. i have eight ones. what number am i?
June 28, 2016

Physics
How much kinetic energy does the electron gain?
June 28, 2016

Calculus
11522122020
June 28, 2016

Calculus
Use implicit differentiation to find the derivative of y with reapect to x x^2y-y^2+ln(xy)=1
June 28, 2016

rio hondo
f(x)=7x2+x+2
June 27, 2016

english
No one has ever seen me, nor ever will. I never was, but am always to be. Yet everyone waits for me, either in hope or in terror, for they always know I will come. What am I?
June 27, 2016

chemistry
sorry,for the mistake. To 200mL of a 0.1M solution of a CH3COOH (Ka=1.8 x 10-5) 70mL of a 0.2M solution of NaOH have been added.calculate the pH before and after the NaOH addition.
June 27, 2016

literature and the arts
thanks Sue :)
June 27, 2016

Bio
Which of the following best describes the influence of latitude on climate? A. Temperate regions receive more solar energy and heat per unit area than tropical regions. B. Polar regions receive less solar energy and heat per unit area than tropical regions. C. Earth's ...
June 27, 2016

language arts
Which sentences are punctuated correctly? Check all that apply. The cake (that I made for my mother’s birthday) was dark chocolate. The nurse, who was kind and compassionate, bandaged my thumb. F. Scott Fitzgerald was a famous writer—who inspired many great films. ...
June 27, 2016

Math
The nutritionistof FLC Foods, Inc. designed a new product for everybody's consumption and believes that the variable cost in producing the said product is Php950.00 per unit and the fixed cost is Php60,000. Write the total cost as function of the product sold. If the ...
June 27, 2016

yogi science
HOW are all living things alike ?
June 27, 2016

hindi
vigyapan on paints, new hospital opened in your town, musical instruments
June 27, 2016

physics
a car travelling at 60km/h uniformly retards for 10s and reaches a velocity of 45km/h. find the retardation.
June 27, 2016

physics
an object undergoes an acceleration of 10m/s2 starting from rest. find the distance travelled by it in seconds
June 27, 2016

write a paragraph
produce,reproduce,process,production,assembly line,lead actor,animation,hire
June 27, 2016

math
if 359=sum 17 how can the unknown next number be 966=sum 21
June 26, 2016

music art
The renaissance concided with Van eycks paintings lack any refrencesto this
June 26, 2016

Algebra help
Please help me compute how to draw a graph after I receive the answer. The problem I have is physically connection the graph.
June 26, 2016

Maths
The measure if one angle of a parallelogram is 25 degree . Find the measures of the other 3 angles
June 26, 2016

chemestry
To 400mL of a 0.1 M CH3COOH solution(Ka=1.8 x 10-5),two subsequent additions of 100mL of 0.2 M NaOH solution have been done.determine the solution pH after each addition. Drbob,I don't understand this problem how to solve.Can you help me and give me the full calculation.
June 26, 2016

Math
When the teacher buys tennis rackets for his gym class, he must buy five more than three times as many tennis balls. Rackets cost $20 each and ball cost $1.50 each. How much does the teacher spend if he needs 17 tennis rackets?
June 25, 2016

biology
31. A student conducts an investigation in which she dissolves 1 gram (g) each of several substances in 50 milliliters (ml) of water. She has 12 identical plastic cups of water. She places 1 g of salt in three cups, 1 g of sugar in three cups, and 1 g of baking soda in three ...
June 25, 2016

Chemistry
64g of oxygen reacts completely with methane gas to form 44g of carbon dioxide gas and 36 g of water vapour. Calculate the amount of methane that takes part in the reaction .
June 25, 2016

Math
If 2 times the square of a number is equal to the 6 times the number,find the number
June 25, 2016

chemestry
calculate the pH of the 120mL of a 0.12 M HCOONa,Ka=1.8*10^-5,solution are added to 50mL of a 0.05 M H2SO4 solution.Determine the pH of the sodium formate solution before and after the H2SO4 addition. please someone help me!
June 25, 2016

pysics
128 km/hr * 1 hr/3600 s * 1000 m/km 128 km/hr * 0.62137119224 mi/km
June 25, 2016

physics
work done against gravity = 50*9.81 *20 total work done, add 200 J to above efficiency = 100 * work against gravity/total work I do not know tension in line because I do not know how your five blocks are arranged.
June 25, 2016

physics
v = total v - watr v vx = 3 - -3 = 6 vy = 4 - -4 = 8 so 6 i + 8 j
June 25, 2016

Physics
What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?
June 25, 2016

algebra
Ryan throws a tennis ball straight up into the air. The ball reaches its maximum height at 2 seconds. The approximate height of the ball x seconds after being thrown is shown in the table. Which equation models the motion of the ball?
June 24, 2016

math
Your car gets 21 miles to the gallon and your friends car gets 28 miles to the gallon? you decide to go on a road trip to UVA, which is 175 miles away. if gas costs $4 per gallon and you decide to split the gas money, how much money will each of you save in gas by driving your...
June 24, 2016

math
is it 1.0038x10^2
June 24, 2016

math
a 1 million sq mile d\forest is how many hectares?
June 24, 2016

math
how much would $500 invested at 4% interest compounded continuously be worth after 7 years? Round your answer to the nearest cent. Do not include units in the answer.
June 24, 2016

math
Dimensional Analysis 8.9x10^5 tons=_____ kg i need to show my work but I don't understand where to start.
June 24, 2016

math
3.7x10^3 x 2.9x10^2 =1.073x10^4
June 24, 2016

math
0.0012x10^-13 - 1.5x10^-10 is it 1.2x10^-9
June 24, 2016

math
3.7x10^13 - 2.9x10^11 so we change it to .29x10^12 but what else do u do so exponents are the same?
June 24, 2016

math
4.67x10^4 + 323x10^3 = 4.993x10^4
June 24, 2016

math
26.3 x 10^3 + 4x10^3 = 26.3+4= =30.3x10^3
June 24, 2016

Math
How much milliliters must be added to 40 ml of a 10% acid solution to reduce its concentration to 4%?
June 24, 2016

Math
How much water in mL must be added to 40mL of a 10% acid solution to reduce its concentration to 4%?
June 24, 2016

Physics
On a day that is 30°c, you drop a rock from the top of a well. You hear the sound of the rock hitting the bottom 0.6s after you drop it. How deep is the well?
June 23, 2016

Language
Which words can be used to describe Jonas's father
June 23, 2016

matyh
80% of your employees work in production. What fraction of the employees work in production?
June 23, 2016

Math
Greates number can be rounded to 6000
June 23, 2016

Chemistry
I got ba-137 ti-48 si-28 and o-16. Now to get mol mass I understand I need to add these up but am I suppose to be multiplying o by 9 and si by 3 based on the formula for mol mass or just o times 3 and si by 3 after?
June 23, 2016

Chemistry
I'm having a hard time setting it up to figure out the answer
June 23, 2016

Chemistry
In 1985 benitoite became the California “state gemstone.” Found only in a tiny mine near Coalinga, California, it is a silicate of barium and titanium with trace impurities that cause a range of hues from colorless to blue to pink. Its general formula is BaTi(SiO3)3...
June 23, 2016

Calculus
Related rates: The volume of a cube is increasing at the rate of 40 mm^3/s. How fast is the surface area of the cube increasing when each edge is 10 mm?
June 23, 2016

Algebra
I deposit 2,500.00for 7months and make 19.76in interest. What. Rate of interest an i receiving?
June 23, 2016

Chemistry
The amount of energy released by the combustiom of 100 g of C2H2 (g) is ______ MJ. 2CH2 + 5O2 ----> 4CO2(g) + 2H2O(g) ΔH= -2511.0 kJ Do I use ΔH = Hproducts - Hreactants? And if so how would that help me solve for the energy released?
June 22, 2016

Science
you are correct
June 22, 2016

math
Kyle buys last year's best-selling novel, in hardcover, for $19.50. This is with a 25% discount from the original price. What was the original price of the novel?
June 22, 2016

math
Sales at a certain department store follow the model 4072-01-02-03-00_files/i0100000.jpg where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below $50,000?
June 22, 2016

Math
100X100X100,bases 2 and 5
June 22, 2016

maths
I am a 7 digit number My tens place is 3 My lakhs place is 2 My hundreds place is twice the lakhs place My thousands place is thrice the tens place My ten lakhs place is 3 less than the thousands place My ones place is 2 less than the thousands place My tens thousands place is...
June 22, 2016

chemestry
PLEASE,COULD ANYONE HELP ME to balance this redox reaction : Cr2S3 PbO2 + H2SO4 + -------> PbSO4 H2Cr2O7+H20
June 22, 2016

physics
A car accelerates from rest for ten seconds with a linearly increasing speed of 3 m/s every second. If the diameter of the tires is 2/3 m and they roll without slipping, find their final angular velocity in radians per second.
June 21, 2016

maths
See: Google "division by zero", then look at the "Math is Fun" entry for the subject.
June 21, 2016

maths
Division by zero is "undefined". In other words, the answer is neither.
June 21, 2016

math
On Tuesday and Wednesday, cab fare cost $7.75 total. On Monday and Thursday, cab fare cost $6.30 on each day. On Friday, cab fare cost $7.00. What was the average daily cost
June 21, 2016

Math/Conversions
I'm sorry if this is a ridiculous question, but how would I figure out how many L she consumed? Yes, Steve. I did read it wrong.
June 21, 2016

Math/Conversions
Good afternoon, could someone please help me with this? The answer is 22 1/2 oz. Doctor instructs pt to drink 1 L (33 4/5oz) of water. An hour later you find 1/3 L left. How many ounces did Ms. White consume? This is what I keep getting. I think I may be doing the wrong ...
June 21, 2016

science
The occurrence of earthquakes along plate boundaries indicates that the 1) plates are stationary 2) earth will eventually break apart 3) earth is shrinking 4) coast of California will break off and slide into the ocean 5) plates are moving
June 21, 2016

Math
The 3 digit number in which the ones digit is three times the tens digit and the tens digit is three times the hundred digit.
June 21, 2016

Maths
The area at the bottom of the pool floor is 20 meters squared and the pool is 1.5 meters deep. The hose is filling up the pool at a rate of 50 Liters per minute. How long will it take to fill the pool?
June 21, 2016

maths
BD is the bisector of angle ABC . prove that the perpendicular distances from BD to AB and CB are equal.
June 20, 2016

Math
8÷100×22=1.76 Monthly payment =22-1.76=20.24 so therefore he pay 20.24 in the fund every month. In every year =20.24×12=240
June 20, 2016

Math
Workers in a certain company are required to 8% of their salary into a social security fund.Mr Doe has a monthly sarary of GH¢22.00 How much does he pay into the fund every month? And every year?
June 20, 2016

Math
(6×10)-(3×3) 60-9=51 so, the part of the compound that is uncovered by the carpet is 51 square meters.
June 20, 2016

Math
(6*10)-(3*3)=60-9=51 51 square
June 20, 2016

Math
A rectangular compound has the dimensions 6m by 10m A square carpet is laid in the centre of the compound. the carpet is 3m by 3m. Find the part of the compound that is uncovered by the carpet.
June 20, 2016

Calculus
The position, p(t), of an object at time t is given. Find the instantaneous velocity at the indicated time c. Also determine whether it is moving forward, backward, or neither at time c. p(t)=2-1/t at c=3
June 20, 2016

physics
A body is moving with uniform acceleration of 10m per second square.lf it start from rest calculate its displacement afrer 5s
June 20, 2016

math
The gestation period of humans(266 days) is_________ percent longer than the gestation period of grizzly bears (220 days).
June 19, 2016

chemestry
i don't know how to solve this problem,could anyone is here to give me the correct solution.It will be good for me. In a reactor of 1.5 L the same amount of C and H2O was introduced. When the reaction: C(s) + H2O ⇄ CO + H2 reaches the equilibrium at 1273 K, the ...
June 19, 2016

chemestry
At 100 °C the reaction: SO2Cl2(g) ⇄ SO2(g) + Cl2(g) has Kp = 2.4. Calculate the equilibrium composition of the mixture when 1.2 atm of SO2Cl2 are mixed with 0.8 atm of Cl2 at 100 °C.
June 19, 2016

chemestry
Calculate the pH of a solution obtained dissolving 10 g of NH3 and 15 g of NH4Cl in 300 ml of water (Kb NH3 = 1.8 x10-5).
June 19, 2016

Physical Science
The A note has a frequency of 880 Hz. What is the wavelength if the speed of sound is 343 m/s? 0.39 m 2.57 m 537 m 301,000 m Which speed(s) is/are below the sound barrier in air? A. 257 m/s B. 1,030 m/s C. 10 m/s
June 19, 2016

Maths
A cliff on the bank of a river is 250m high if the angle of depression of the point of the opposite side of the river is 50 degree,find the width of the river
June 19, 2016

chemestry
1. Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.
June 19, 2016

Math
For the function f(x)=sinx, show with the formula sin^2A=1/2(1-cos2A) that f(x+y)-f(x)=cosxsiny-2sinxsin^2(1/2y)
June 19, 2016

Marketing
1. What forces in the marketing environment represent possible opportunities for Danone's Activia brand? What forces represent potential threats to the Activia brand? 2. How might a customer assess the value of activia yogurt? Be as specific as possible in your answer.
June 19, 2016

physics
the length of an aluminium bar of length 80cm increases by 1mm on heating.what is the final temperature of the bar if it was initially at temperature 20 degree celsius?(given:coefficient of linear expansion of aluminium=25×10^-6
June 19, 2016

chemestry
Please could anyone help me to give me solution of this problem: Calculate the pH of a solution obtained by mixing 50 mL of NH3 0.1 M (Kb = 1.8•10–5 mol/L) and 25 mL of HCl 0.2 M
June 19, 2016

physic mechanic
that means dv/dt = F/m - (b/m)v or (b/m) v + dv/dt = F/m let v = c (1-e^-kt) then dv/dt = cke^-kt and (b/m)c -(b/m)ce^-kt +cke^-kt = F/m when t --> oo, F = bc so c = F/b when t = 0, c k = F/m so Fk/b =F/m so k = b/m now v = (F/b)( 1-e^-(bt/m) ) a = dv/dt = (F/b)(b/m)e^-(bt/...
June 19, 2016

physic mechanic
F - bv = m a a = (F-bv)/m
June 19, 2016

chemestry
calculate the concentration of acetic acid in a 0.85 m sodium acetate solution,when ph=7,knowing that for the acetic acid,ka= 1.76 x 10-6.
June 19, 2016

English
Choose the correct form of the possessive for the underlined word in the following sentence: “A YEARS worth of hard work has finally paid off.” ( "years" is underlined) should it be: year years years' year's
June 18, 2016

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