Saturday

February 13, 2016
Total # Posts: 363

**Cosmology**

Comparison of emissions from elliptical galaxies in x-ray and optical bands
*March 1, 2013*

**chemistry**

Iwish to prepare 3% NH3 from 20ml strong NH4OH and 180ml H2O.Can you help me?
*February 7, 2013*

**S.S**

dis is funny
*January 30, 2013*

**Chemistry**

tyr-trp-phe-val-lie
*January 27, 2013*

**Binomial Math**

.2150
*January 27, 2013*

**Math**

Need help with 4th grade fractions.
*January 24, 2013*

**Math**

Jeramie has a jar of nickels and dimes. There are 200 coins worth $14.00. How many of each type of coin are in the jar. :)
*January 23, 2013*

**economics**

Mary earns $100/day at a flower shop. She will take 2 days off without pay to attend an out of town wedding. Transportation will cost $180 round trip. Hotel $99/day for 2 nights. What is the opprotunity cost?
*January 13, 2013*

**geometry**

angle xoz (5m-5) angle yoz (7m+29) these are supplementary angles. How do you solve?
*January 4, 2013*

**Chemistry**

What preperation produces a 2.0 Mole solution of C6H12O6? a) 90.0 grams of C6H12O6 dissolved in 500.0 mL of solution b) 180.0 grams of C6H12O6 dissolved in 1000mL of solution c) 90 Grams of C6H12O6 dissolved in 1000mL of solution D) 180.0 Grams of C6H12O6 dissolved in 500.0mL ...
*December 19, 2012*

**English**

yes it is C
*December 17, 2012*

**The Age Of Jefferson To The American Expansion**

18 is not D because i got it wrong when i answer the questions
*December 7, 2012*

**Finance**

questo
*December 2, 2012*

**CHEMISTRY**

What is oxygen extensive properties?
*November 30, 2012*

**chemistry**

Rate Constant * Concentration^2
*November 29, 2012*

**Math**

12 over 7 simplified
*November 29, 2012*

**Math**

-5 over 8 times -3
*November 29, 2012*

**Math**

10x and 45x to the power of 4
*November 29, 2012*

**chemistry**

Rate Constant * Concentration^2
*November 29, 2012*

**chemistry**

Rate Constant * Concentration^2
*November 29, 2012*

**Chemistry**

thanks
*November 29, 2012*

**Chemistry**

Rate Constant * Concentration^2
*November 29, 2012*

**Chemistry**

it is wrong
*November 29, 2012*

**Chemistry**

thanks
*November 24, 2012*

**Chemistry**

Thanks
*November 24, 2012*

**Chemistry**

thanks
*November 22, 2012*

**Chemistry**

thanks
*November 22, 2012*

**Chemistry**

thanks
*November 22, 2012*

**Chemistry**

thanks
*November 22, 2012*

**Physics**

What is the max speed a car can go on a race track with a radius of 80 meters, the coefficient of friction between the tires and the road is .30
*November 19, 2012*

**Physics**

A baseball (m = 135 g) approaches a bat horizontally at a speed of 40.4 m/s (90 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the ball by the bat? Neglect the...
*November 18, 2012*

**Math**

C. Circumference
*November 14, 2012*

**Statisitcs**

The mean height of fully grown birch trees are 18 feet with a standard deviation of 1.2 feet, normally distributed. Random samples of size 9 are drawn from this population and the mean of each sample is determined. Find that mean and the standard error of the mean, and the ...
*November 14, 2012*

**Physics**

An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit. During the space walk, the unit ejects some gas with a ...
*November 13, 2012*

**Physics**

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the skateboarder on the ...
*November 12, 2012*

**physics**

A hockey goalie is standing on ice. Another player fires a puck (m = 0.22 kg) at the goalie with a velocity of +63 m/s (a) If the goalie catches the puck with his glove in a time of 7.0 10-3 s, what is the average force (magnitude and direction) exerted on the goalie by the ...
*November 12, 2012*

**Physics**

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 26.0 m. She pushes in a direction 22.0° below the horizontal. A 38.0-N frictional force opposes the motion of the cart.
*November 11, 2012*

**physics**

The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which ...
*November 7, 2012*

**Physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 115 m, while the largest has a radius 165 m, as the drawing illustrates. The height of the outer wall is 18 m.
*November 7, 2012*

**7th grade science Ms. Sue pleae only 1 question**

fdf
*November 2, 2012*

**Physics**

The drawing shows a circus clown who weighs 710 N. The coefficient of static friction between the clown's feet and the ground is 0.49. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force ...
*October 25, 2012*

**Physics**

Well, hard to imagine the picture, but by the description the wires each side are at 16 deg. back on each side of the tooth, i.e. each at 16 deg. to the face of the tooth. Each has 18N. tension. (sin 16) x 18 = 4.9608N. Double it (2 wires), = 9.9216N. back on the tooth.
*October 25, 2012*

**phyics**

A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of ...
*October 10, 2012*

**Math**

A room has dimensions 2.24 m (height) × 5.30 m × 6.55 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (b) If the fly walks rather than flies, what is the length of the ...
*October 9, 2012*

**math (calculus)**

A room has dimensions 2.24 m (height) × 5.30 m × 6.55 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (b) If the fly walks rather than flies, what is the length of the ...
*October 9, 2012*

**Math**

(2.0)t^2/2 = (9.5)t t=????
*October 9, 2012*

**Physics**

A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of ...
*October 9, 2012*

**physic**

f(t)=ct
*October 4, 2012*

**physics**

A 5.9-kg rock and a 3.0 10-4-kg pebble are held near the surface of the earth. (a) Determine the magnitude of the gravitational force exerted on each by the earth.(b) Calculate the magnitude of the acceleration of each object when released.
*October 3, 2012*

**Algebra,Geometry**

You could actually set "X"=0 to find Y, and then plug in a "0" for Y to get X.
*September 30, 2012*

**Math**

Thank you!
*September 24, 2012*

**Math**

I think. I am honestly not sure what to do.
*September 24, 2012*

**Math**

The volleyball court -if it id 80 ft long and 50 ft wide, how would you find the dimensions of the court? Explain please! Remember that I am a 6th grader. Please don't give me a 10-12th grade answer.
*September 24, 2012*

**grade 9 science**

a student wants to estimate the population size and density of birch trees in a woodlot measuring 100 m by 100 m. On a diagram of the woodlot, she splits the area into a 10 by 10 grid and randomly selects 10 sample quadrants - (0,0), (1,4), (2,6), (3,9), (4,3), (5,5), (6,1), (...
*September 10, 2012*

**d**

the school auditorium has 8 rows of seats, divided in three rows. Each section has 15 seats. How many seats are there in total?
*September 5, 2012*

**health**

The lower thigh muscles are rectus femoris, vastus lateralis and medialis. Located in the back of your leg are the hamstrings. These muscles help you run, jump, and walk!
*August 22, 2012*

**Macroeconomics**

D Marginal Cost
*July 10, 2012*

**statistics**

In a survey of 400 college students, 40 were left-handed. Treating the sample as if it were random and using 0.015 as the standard deviation of the sampling distribution of the sample proportion, what is the lower bound of a 95% confidence interval for the population proportion?
*May 18, 2012*

**marketing**

Unit 5 Individual Project Deliverable Length: 4-5 body pages, 1 PERT chart, 1 Gantt chart Details: Using your current work organization (or an organization of interest) as the subject matter, research the elements of business and prepare an APA formatted paper that: Analyzes ...
*April 22, 2012*

**Calculus**

2) 2*x*e^(-4) 3) 2*x*e^(sin(x))+x^2*cos(x)*e^(sin(x)) 1) e^(x)*sin(x)^2+2*e^(x)*sin(x)*cos(x)
*April 20, 2012*

**maths**

a) 1/6,1/7,1/8,...
*April 20, 2012*

**Science**

idk!!
*April 8, 2012*

**simple subject**

What is the simple subject in: The black and white Schnauzer barked all day long.
*March 27, 2012*

**math**

0.009615
*March 26, 2012*

**chemistry**

Yeah volumes at the bottom of the page are switched
*March 12, 2012*

**biology**

Why is a denaturing solution used in the Southern blotting technique?
*March 9, 2012*

**physics**

DOnt know
*February 29, 2012*

**chemistry**

32.2
*February 29, 2012*

**math**

how many line segments are in the word FAME?
*February 28, 2012*

**physics**

I HATE YOU
*February 20, 2012*

**physics**

adfs
*February 20, 2012*

**physics**

dsgbv
*February 20, 2012*

**physics**

fuk u
*February 20, 2012*

**algebra**

how do you solve -x+2y=2
*February 8, 2012*

**Physics C**

A point charge of 5.5 µC is located at the center of a spherical shell of radius 30 cm, which has a charge −5.5 µC uniformly distributed on its surface. Given: ke = 8.98755 × 10^9 Find the electric ﬁeld for a point inside the shell a distance 12 ...
*February 1, 2012*

**World Civ**

What were the social and administrative foundations of the absolute power of Ming Quing emperors?
*February 1, 2012*

**World Civ**

What were the social and administrative foundations of the absolute power of Ming Quing emperors?
*February 1, 2012*

**World Civ**

How did advances in military technology change warfare in 16th century Japan? How was the strategic balance of power reflected in the government created by Tokugawa leyasu?
*February 1, 2012*

**World Civ**

Why were so many people living in the European countryside dependent on aristocracy? (during and before the agricultural revolution in Europe)
*February 1, 2012*

**geometry**

Quadrilateral QRST is a square. If the measure of QR is 3x – 6 and TS is 6 - x. Find the area of the square.
*January 20, 2012*

**english**

Actually, can you just post your email address, and then we can figure stuff out through email?
*January 9, 2012*

**english**

When you get the answers to the final....please post them!
*January 9, 2012*

**english**

Explain your changes?
*January 3, 2012*

**home economics**

When were the Home Economics Courses dropped or greatly reduced by the school system in Ontario.
*November 27, 2011*

**Calculus 1**

If you have 280 meters of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?
*November 22, 2011*

**Physics**

Air in a balloon does 25 J of work while absorbing 81 J of heat. What is the change in internal energy?
*November 19, 2011*

**Ashford**

Beth gives Megan $2 allowance a week. Then she takes Megan shopping and allows her to select what she wants to buy. If the item desired costs more than $2, Megan's mother suggests she save her money until she has enough saved to pay for the desired item. When Megan ...
*November 1, 2011*

**Maths Grade 8**

fart
*October 26, 2011*

**Algebra**

Rewrite -81/(-88) as multipulcation
*October 23, 2011*

**Algebra**

whats the answer for 14(3-7x)=-(9+2x) with simple steps on how to do it
*October 16, 2011*

**specific heat capacity**

figured it out.
*September 26, 2011*

**specific heat capacity**

How much heat would be required to heat 1 gram of pure liquid water from 10C to 20C? How would i approach this problem?
*September 26, 2011*

**math**

how do yo convert hte ratio 120:200 to a fraction in simpliest form
*September 24, 2011*

**Math**

Jake says that adding 0 does not change a sum. Is he correct? explain.
*September 20, 2011*

**Chemistry**

662.5
*September 14, 2011*

**Math**

Ms. Poole, my PE teacher, asked the 100 seventh in my school if they could swim. Half the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?
*September 13, 2011*

**Chemistry**

When 1.0 g of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mL a) How many megajoules are released when 3.0 of gasoline burns? b) If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 3.0 gal ...
*September 12, 2011*