Monday

March 30, 2015

March 30, 2015

Total # Posts: 79,538

**Health**

Thank you!
*February 17, 2015*

**Health**

our society. us.
*February 17, 2015*

**Health**

What has the society done concerning the current problems with teen pregnancy?
*February 17, 2015*

**AP Chemistry**

OH- + HC2H3O2 --> H20 + C2H3O2- 0.0025 mol 0.0025 mol - 0 -0.0025 -0.0025 - +0.0025 0 0 - 0.0025 0.0025 mol/0.050 L = 0.050 M C2H3O2- + H20 <--> HC2H3O2 + OH- 0.050 M - 0 0 -x - +x +x 0.050-x - x x Kb = 10^(-14)/(1.8x10^(-5) = 5.56x10^(-8) = x^2/(0.050-x) x = 5.27x10...
*February 17, 2015*

**AP Chemistry**

A student titrates 25.0 mL of a 0.100 M solution of acetic acid with a 0.100 solution of sodium hydroxide. Calculate the pH at the equivalence point.
*February 17, 2015*

**GEOMETRY**

What is the value of p? A right triangle with angles measuring 45, 45 and 90 and a leg measuring P and hypotenuse measuring 44 22 22 sqrt 2 44 44 sqrt 3 It always helps to know how...thanks
*February 17, 2015*

**SS**

What are the similarities between Africa north of the equator and south of the equator?
*February 17, 2015*

**Physics**

(a) Fnet = ma = 0 Fnet = Fapp - Ff Fapp - Ff = 0 Fapp = Ff F = (Fn)(μs) F = (Fg)(0.1) F = (9.8m)(0.1) F = (9.8)(59)(0.1) F = 57.82 N (b) Fnet = Fapp - Ff F = 57.82 - (Fn)(μk) F = 57.82 - (Fg)(0.03) F = 57.82 - (9.8m)(0.03) F = 57.82 - (9.8)(59)(0.03) F = 57.82 - 17....
*February 17, 2015*

**math**

Gary measured the middle school and made a scale drawing. He used the scale 1 inch = 5 feet. The gym is 85 feet long in real life. How long is the gym in the drawing?
*February 17, 2015*

**physics**

Ft = Fc = (mv²)/r 59 = [m(20²)]/2.55 59(2.55) = 400m 150.45 = 400m m = 0.376125 kg Ft = Fc = (mv²)/r Ft = [(0.376125)(52.5²)]/2.55 Ft = 406.546875 N
*February 17, 2015*

**physics**

A string under a tension of 59.0 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.0 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string on the table is 1.00 m...
*February 17, 2015*

**algebra**

What do you get if you drop a grand piano down a mine shaft
*February 17, 2015*

**GEOMETRY**

Thanks much
*February 17, 2015*

**GEOMETRY**

What are the angle measures of the triangle? A right triangle with a hypotenuse measuring 14sqrt3 and legs measuring 7sqrt3 and 21 30°, 60°, and 90° 45°, 45°, and 90° 60°, 60°, and 60° They cannot be determined.
*February 17, 2015*

**life orientation**

distinguishe between intrapersonal and interpersonal conflict
*February 17, 2015*

**life orientation**

distinguishe between intrapersonal and interpersonal conflict
*February 17, 2015*

**Physics**

suppose you had a circuit with three resistors in series and you measured I=7.0 milliamps; V = 14.7 volts; V1= 3.5 volts and V2 = 1.4 volts. What would be the voltage across the third resistor? What would its resistance be?
*February 17, 2015*

**math**

so there are how many pages
*February 17, 2015*

**math**

good advice
*February 17, 2015*

**math**

good advice
*February 17, 2015*

**math**

every container of fruit salad contains 1/3 of an apple. how many whole apples are there in 6 containers or fruit salad what should i do
*February 17, 2015*

**life orientation**

To what extent can intrapersonal conflict affect the choice of a career
*February 17, 2015*

**Chem**

The pairs with similar colours were Ba2+ and Cu2+, and Sr2+ and Li+. Ba and Cu had light green-ish colours, and Sr and Li had red colours. I don't know why they produced similar colour though, the question says to use the periodic table
*February 17, 2015*

**life orientation**

*February 17, 2015*

**physics SOS**

a 62.8 kg astronaut is floating toawrd the front of her ship at .16 m/s relative to the ship. she wishes to throw away the 2.9 kg book she was carrying. what should the speed of the book be to achive her goal?
*February 17, 2015*

**maths**

2 / 7 + 1 / 5 = 2 * 5 / ( 7 * 5 ) + 1 * 7 / ( 5 * 7 ) = 10 / 35 + 7 / 35 = 17 / 35
*February 17, 2015*

**Math**

Frank paid very well finance rate of 1.5% on the first $500 and 1% at any amount above $500 how much did he pay at the unpaid balance was $741.23
*February 17, 2015*

**kayli**

why did a portion of the tabletop get cold when natasha placed her drink on the table?
*February 17, 2015*

**Math**

I am asked to graph a triangle with the vertices (-3, 2), (5, 6), and (6, -4) after performing a dilation about the origin of scale factor 4. What does "about the origin" mean? Is this the same as just multiplying the ordered pairs by 4? Are the new vertices (-12, 8...
*February 17, 2015*

**Society**

What are the individual and social implications of teenage pregnancy?
*February 17, 2015*

**math**

Jamar is trying to fit his encyclopedia on a shelf. Each book is 2 1/4 inch thick. The shelf is 2 1/4 feet wide. How many books will Jamar be able to fit
*February 16, 2015*

**chemistry - dilution factor**

Wouldn't it be the concentration on the graph multipled by 4/5 rather than 5/4 for the concentration in the original sample ?
*February 16, 2015*

**chemistry - dilution factor **

I have 4 ml of eluent from SPE and I brought the volume up to 5 ml using the solvent. The eluent was ran in UV for Quant analysis. Is the dilution factor 0.8 because it would be "4 in 5"?
*February 16, 2015*

**Life orientation**

Explain clearly how intrapersonal conflict can be addressed through engaging in physical exercises.
*February 16, 2015*

**Life orientation**

the link between intrapersonal conflict and initiating relationship is dat if you have a conflict between SHOULD and WANT you get it hard to start an initiating positive relationship for many different reasons, because there are common behaviours that encourage people to ...
*February 16, 2015*

**physics**

A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 5 rotations in 20.7 seconds when twirled.
*February 16, 2015*

**math**

the cost of admission for adults is $12 and children under 12 are charged $8.00. If 20% of the total ticket sales were for children how much more money could they have made if all the tickets had been sold to adults?
*February 16, 2015*

**SS**

What might be the impact on a country when the oldest people are in their 40s?
*February 16, 2015*

**Argumentative essay check please!!!**

I forgot that, thanks!
*February 16, 2015*

**Algebra 1**

thank you
*February 16, 2015*

**transcription**

ABDOMEN: Soft without masses
*February 16, 2015*

**GEOMETRY**

What is the value of W? A triangle with hypotenuse W and with a leg with length 7sqrt3 and angles measuring 90 degrees and 30 degrees. 7 3.5 7 sqrt3 14
*February 16, 2015*

**physics**

A charge of +355 μC is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +7.9 μC is moved from one corner of the square to any other empty corner?
*February 16, 2015*

**physics**

A police officer investigating an accident estimates that a moving car hit a stationary car at 24km/h . If the moving car left skid marks 45m long, and if the coefficient of kinetic friction is 0.71, what was the initial speed of the moving car? Express your answer using two ...
*February 16, 2015*

**physics**

Starting from rest, a skier slides 100 m down a 28 ∘ slope. How much longer does the run take if the coefficient of kinetic friction is 0.17 instead of 0? Express your answer using two significant figures.
*February 16, 2015*

**physics**

The handle of a 27kg lawnmower makes a 36∘ angle with the horizontal. If the coefficient of friction between lawnmower and ground is 0.66, what magnitude of force, applied in the direction of the handle, is required to push the mower at constant velocity? Express your ...
*February 16, 2015*

**physics**

A skier of mass m = 55kg glides down a slope at angle theta = 32∘, as shown in the figure below. The snow is so slippery that you can neglect friction. Find the skier's acceleration. Express your answer using two significant figures. Find the force the snow exerts on...
*February 16, 2015*

**physics**

Children sled down a 44m -long hill inclined at 27∘ . At the bottom, the slope levels out. If the coefficient of friction is 0.11, how far do the children slide on the level ground? Express your answer using two significant figures.
*February 16, 2015*

**Criminal Justice/Judicial Process**

should be B, to me. I dunno exactly, though...
*February 16, 2015*

**Accelerated Science**

Are you in 6th Grade because I might know you from school.
*February 16, 2015*

**Accelerated Science**

Radiation is the heating throught electromagnetic waves Conduction is the heating through touch convection is the heating through hot liquid or gas
*February 16, 2015*

**Accelerated Science**

Match each situation with the correct method of heat transfer: a. radiation b. conduction c. convection __A_ 1) The inside of a car gets very hot when that car is parked on a parking lot in the middle of August. __A_ 2) During the winter when the furnace is running in a two-...
*February 16, 2015*

**life orientation**

If a person is in a period of depression. Axiety and low self esteem
*February 16, 2015*

**I am so lost**

The freezing point of pure cyclohexane is 6.60°C and the freezing point depression constant is 20.00°C/m. The freezing point of a solution containing 0.161 g of an unknown nonelectrolyte solute and 5.818 g of cyclohexane was 3.98°C. What is the molar mass of the ...
*February 16, 2015*

**science**

A girl drops a stone into a mineshaft 122.5m deep. how soon after she throws does she here the striking of the stone at the bottom of the shaft?
*February 16, 2015*

**Physics**

A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 12 rotations in 20.7 seconds when twirled. Calculate the centripetal acceleration of the wooden block: Calculate the tension in the string acting on the ...
*February 16, 2015*

**Physics**

A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 8 rotations in 20.7 seconds when twirled. What is the block's tangential (linear) speed? What is the block's angular speed?
*February 16, 2015*

**physics**

Two forces of the same magnitude act at a point.the square of their resultant is 3 times the product of their magnitudes.the angle between them is?
*February 16, 2015*

**costs**

if 4 pencils sell for .59 cents how much will 25 pencils cost?
*February 16, 2015*

**Chemistry**

How much potassium chloride in grams is needed to prepare 1500ml solution of 3% kcl solution? This is my answer: 3x1500=4500 4500÷100=45 Answer is 45gm
*February 16, 2015*

**I am so lost**

The freezing point of pure cyclohexane is 6.60°C and the freezing point depression constant is 20.00°C/m. The freezing point of a solution containing 0.161 g of an unknown nonelectrolyte solute and 5.818 g of cyclohexane was 3.98°C. What is the molar mass of the ...
*February 16, 2015*

**physics**

An unknown object with mass M slides on a smooth frictionless surface with a speed of 35.0 m/s along the x-axis. Suddenly it explodes into two pieces, P and Q, which move in different directions as shown in the figure below. Determine the final velocity of both fragments if ...
*February 16, 2015*

**math**

how many inches in a foot
*February 15, 2015*

**Physics**

What is the difference in blood pressure (mm−Hg) between the top of the head and bottom of the feet of a 1.82m tall person standing vertically?
*February 15, 2015*

**business managment**

creating a slide that will have a large and a number of bullet points below it. what slide format should she use? A.)comparison B.)title and content C.)title only D.)two content
*February 15, 2015*

**life orientation**

Unable to quit
*February 15, 2015*

**stats**

7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.
*February 15, 2015*

**Physics**

You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -40.0 units
*February 15, 2015*

**Life orientation**

Link between intrapersonal conflict and initiating
*February 15, 2015*

**Life orientation**

Link between intrapersonal conflict and initiating
*February 15, 2015*

**Life orientation**

Link between intrapersonal conflict and initiating
*February 15, 2015*

**math**

If a United States dollar is worth $1.41 in Canadian money, how much is $100 in Canadian money worth in the united state money, to the nearest cent
*February 15, 2015*

**math**

Joe drank 4 liters of water on Monday and 4 deciliters of water on Tuesday. How much more water did he drink on Monday than on Tuesday?
*February 15, 2015*

**maths**

An open bucket is in the form of a frustum of a cone,whose radii of bottom and top are 7 and 28cm.If the capacity of the bucket is 21560cmcube,then find the cost of metal sheet used in making the bucket at the rate of Rs. 1per10cmsq.
*February 15, 2015*

**maths **

The top of a T.V tower casts a shadow of 35 metres long when the angle of elevation of the sun 57°40'.How high is the top of the tower?
*February 15, 2015*

**Math**

So far john has run 1/4 of the way to school and walked 3/8 of the way.What fraction of the distance to school does john have left?
*February 14, 2015*

**Physics**

If the rifle is stopped by the hunter’s shoulder in a distance of 3.16 cm, what is the magnitude of the average force exerted on the shoulder by the rifle? Answer in units of N. mass of bullet= 0.0137 kg velocity of bullet= 546 m/s to the right mass of rifle= 3.82 kg ...
*February 14, 2015*

**French**

But my textbook has an example of à midi et demi. If it is right to use à for midi et demi, then why can't I do the same for matin?
*February 14, 2015*

**French**

Which sentence is correct? 1. J'ai anglais de matin. 2. J'ai anglais à matin.
*February 14, 2015*

**Physics **

How does the energy stored in a capacitor change if (a) the potential difference is doubled, and (b) the charge on each plate is doubled, as the capacitor remains connected to a battery?
*February 14, 2015*

**Science**

Thank you
*February 14, 2015*

**math**

on a test of 50 question jill answered 47 correctly.how many percent did she answered correctly
*February 13, 2015*

**math**

The annual interest rate for a customer’s loan of $425 is 15.75%. What is the total dollar amount to be repaid on the loan, including principle and interest, for the entire year?
*February 13, 2015*

**Physics **

How does the energy stored in a capacitor change if (a) the potential difference is doubled, and (b) the charge on each plate is doubled, as the capacitor remains connected to a battery?
*February 13, 2015*

**math**

why it become 42?
*February 13, 2015*

**kayli**

Thermal energy is caused by the motion of
*February 13, 2015*

**pre- calculus**

In how many ways can a family of six be seated at a round table if the mother and father must sit together?
*February 13, 2015*

**GEOMETRY**

Thank you
*February 13, 2015*

**GEOMETRY**

Find the exact length of the altitude drawn to the hypotenuse. Do not round. The triangle is not drawn to scale. A triangle with base measures of 9 & 17. Draw a diagram. Using similar triangles, we know that h/9 = 17/ã370 I need more help with this. Thank you
*February 13, 2015*

**Calculus**

Let f(x)=cosxsqrt(1+sinx). A. Let F(x)=the integral of f(x)dx and F(0)=5/3, find F(pi/2). I got 3.386 with U-substitution B. If G(x)=the integral of f(x)sinxdx and G(0)=1/3, find G(x). I got a reply to this but I did not understand the explanation. How would I solve this with ...
*February 13, 2015*

**health**

If older adults are at risk of falling ,they should do exercises that maintain or improve
*February 13, 2015*

**maths**

A and B can finish a piece of work in 16 days and 12 days respectively. A started the work and worked at it for 2 days.He was then joined by B.Find the total time taken to finish the work.
*February 13, 2015*

**Calculus**

The integral of sin(7x)cos(7x)dx
*February 13, 2015*

**Calculus**

Integration with substitution The integral of f'(g(5x))g'(5x)dx
*February 13, 2015*

**physics**

Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2
*February 13, 2015*

**Calculus**

I don't understand your explanation. How would you go about it with u-substitution?
*February 13, 2015*

**Calculus**

Let f(x)=cosxsqrt(1+sinx) A. If F(x)=the integral of f(x)dx and F(0)=5/3, find F(pi/2). B. If G(x)=the integral of f(x)sinx dx and G(0)=1/3, find G(x).
*February 13, 2015*

**Calculus**

f'(x) if x is less than or greater than 1 Let F'(x)={ g'(x) if x>1 Where f'(x)=x/(x^2-2)^2 and g'(x)=3x-4 A. If f(1)=3/2, find f(x) B. If F(x) is continuous at x=1, find g(x). C. Express F(x). D. If F(x) is continuous at x=1, determine if F(x) is ...
*February 13, 2015*

**Calculus**

Integration with trig functions Integral of [(1-sinx)/cos^2x] dx
*February 12, 2015*

**Geometry**

What is the value of x, given PQ || BC? Triangle: A, B, C with bisector PQ AP = 8 PB = x AQ = 12 QC = 18
*February 12, 2015*

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