Sunday

February 19, 2017
Total # Posts: 537

**math**

If tow sides of a triangular flag are content, which of the following words can not be used describe the shape of the flag? a. Obtuse b. Acute c. Scalene d. Equilateral

*March 7, 2011*

**Math**

1/46656 How to figure this out? Go to: google Type in: Rolling 6 dice, what is the probability of rolling six of a kind? click on the first link which should be: What are the odds of rolling 6 of a kind on a six sided die...

*March 4, 2011*

**Physics**

A = v^2/r A = (1.70*10^4)^2/(5.30*10^6) A = 54.53 A = G(m/r^2) m = A*r^2/G G = 6.67*10^-11 m = 54.53*(5.30*10^6)^2/6.67*10^-11 m = 2.30*10^25 ------------------------------------ A = G(m/r^2) A = 6.67*10^-11(2.30*10^25/(8.70*10^6)^2) A = 20.27 A = v^2/r (A*r)^(1/2) = v v = ...

*March 4, 2011*

**Physics**

Newton's law of universal gravitation: where force equals the universal constant of gravity multiplied by mass of the earth and mass of an object divided by the raduis squared F = G((m1*m2)/(r^2)) Force equals the mass of an object multiplied by the acceleration or 'g...

*February 24, 2011*

**world history**

what was the first hr on the titanic atmoshere like

*February 23, 2011*

**Physics**

A 37 kg child roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 17 degrees with the horizontal. If there's no friction, what is the kinetic energy of the child at the bottom of the incline?

*February 3, 2011*

**Physics**

A 37 kg child roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 17 degrees with the horizontal. If there's no friction, what is the kinetic energy of the child at the bottom of the incline?

*February 3, 2011*

**Physics**

What is the average power output of a weightlifter who can lift 260 kg to a height of 1.9 m in 1.8 seconds?

*February 3, 2011*

**Physics**

A 37 kg child roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 17 degrees with the horizontal. If there's no friction, what is the kinetic energy of the child at the bottom of the incline?

*February 3, 2011*

**algrebra 1**

The difference of 5 times a number is 27. Which equation below can be used to mind the unknown number?

*February 3, 2011*

**Math**

A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

*February 2, 2011*

**math**

A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

*February 2, 2011*

**Math- Please Help!!**

A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

*February 2, 2011*

**Math**

A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

*February 2, 2011*

**Math**

A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

*February 1, 2011*

**College Chem PLEASE HELP**

A 3.50 liter ballooncontains air at 65% relative humidity at 22 degrees C at 1.0 atm pressure. A small peice of Na metal is introduced to the balloon to remove all of the water vapor. What would the new volume be for the dry air in the balloon?

*January 31, 2011*

**chemistry**

e. copper ions, nitrate ions, and water. a and b are eliminated because copper and nitrate turn out to be aqueous due to solubility rules. that leaves you with b, c, and e. with these types of problems, you'll never end up with electrons as the answer, it'll only ask ...

*January 28, 2011*

**statistics**

what is average for the following numbers 65 49 24 15

*January 26, 2011*

**English**

What is the theme of "Abalone, Abalone, Abalone" by Toshio Mori?

*January 23, 2011*

**trig**

It is false. The smaller angle can have a greater value.

*January 20, 2011*

**physics**

Thanks!I get it now. I had gotten the normal force, but I wasn't sure how to get the force of friction, but this helps.

*January 20, 2011*

**physics**

A couch with a mass of 100 kg is placed on an adjustable ramp attached to a truck. As one end raises, the couch begins to move downward. If it sldes with an acceleration of .79 m/s^2 at 12 degrees, what is the coefficient of kinetic friction. I still am having troubles with ...

*January 20, 2011*

**Physics**

Ok, that's what I got but I wasn't sure if it was correct. Thanks so much!

*January 20, 2011*

**Physics**

Someone attaches a 27 kg bale of hay to one end of a rope passing over a frictionless pulley connected to a beam in a hay barn. Someone else pull down on the opposite en of the rope with a force of 397 N. Ignoring the mass of the rope, what will be the magnitude and directionf...

*January 20, 2011*

**Physics**

I don't think I did it correctly. I got a very very small number.

*January 20, 2011*

**Physics**

A coach with a mass of 100 kg is placed on an adjustable ramp attached to a truck. As one end raises, the couch begins to move downward. If it sldes with an acceleration of .79 m/s^2 at 12 degrees, what is the coefficient of kinetic friction. I think I found the normal force, ...

*January 20, 2011*

**english**

this is not unethical. There is no ethical boundary, per se, for advising another co-worker of their work practices. An ethical issue may arise however if I shared that information with that co-worker and I wasn’t supposed to know /share (ie. a supervisor told me in ...

*January 19, 2011*

**english**

Is it ethical telling an associate and close friend that she should pay more attention to her work responsibilities, or management will fire her please explain why?

*January 19, 2011*

**Math**

solve log(b4)x-log(b4)2=2 (b4)=base 4

*January 10, 2011*

**Pre-Calc**

Solve the equation. (tan^2)3x=3

*December 29, 2010*

**trigonometry**

solve: 2cosx-1=0

*December 15, 2010*

**maths**

find the area of a square ABCD 16 square meter.find the area of the area joining mid points of the side

*December 12, 2010*

**Math**

A bolt weights about 2/5 ounce. True or false The expresion 48 divided by 2/5 could be used to find the number of bolts in a 3 pound box

*December 2, 2010*

**Math**

A bolt weights about 2/5 ounce. True or false The expression 48 divided by 2/5 could be used to find the number of bolts in a 3-pound box

*December 2, 2010*

**Chemistry**

When determining boiling points, why would you need to repeat your experiment if your sample completely vaporized before you were able to obtain a constant temperature?

*December 1, 2010*

**Chemistry**

When determining boiling points, why would you need to repeat your experiment if your sample completely vaporized before you were able to obtain a constant temperature?

*December 1, 2010*

**Chemistry**

you were asked to determine the melting point of an unknown compound in order to identify at as one of the compounds you had previously examined. What else could you have done to make sure that your unknown was indeed the compound you believed it to be, and not just a compound...

*December 1, 2010*

**Chemistry**

In the determination of melting points, why cant you use water instead of mineral oil?

*December 1, 2010*

**Chemistry**

How will the boiling point of a substance be affected by increasing the atmospheric pressure? How will the boiling point of a substance be affected by decreasing the atmospheric pressure?

*December 1, 2010*

**Math**

actually i have a question is that 1 big problem or 4 different ones???

*November 30, 2010*

**art**

a positive bias

*November 24, 2010*

**Statistics**

hi i need help calculating the standard error using the central limit theorem. *a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11, there are 5x5=25 samples of the two scores (n=2)* i already calculated the standard deviation and mean. for the question my ...

*November 21, 2010*

**math**

hi i need help calculating the standard error using the central limit theorem. *a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11, there are 5x5=25 samples of the two scores (n=2)* i already calculated the standard deviation and mean. for the question my ...

*November 21, 2010*

**statistics**

hi, how would i calculate the standard deviation of the following sampling distribution of means. apparently this is the longhanded way of calculating standard error. *a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11 (2, 2) ... 2 (2, 3) ... 2.5 (2, 6) ... 4 (...

*November 21, 2010*

**statistics**

what is meant by the standard error of a statistic? what is it an index of? what is meant by the standard error of the mean? what it is an index of?

*November 21, 2010*

**statistics**

what is sampling distribution and sampling distribution of means?

*November 21, 2010*

**statistics**

what is random sampling and why is it important to statistical inference with reference to representativeness and error?

*November 21, 2010*

**Math**

i have a question regarding statistics. i just don't know how to do it and would really appreciate if someone could tell how i can solve it. the question is; a) compute the mean and the standard deviation of the population? ive looked through all my notes and my textbook ...

*November 21, 2010*

**statistics**

i have a question regarding statistics. i just don't know how to do it and would really appreciate if someone could tell how i can solve it. the question is; a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11 a) there are 5x5=25 different samples of two ...

*November 20, 2010*

**Chemistry**

If the pH of grapefruit is 3 and the pH of beer is 5, how many times more acidic is the grapefruit juice than the beer? According to the logarithmic scale

*November 10, 2010*

**Chemistry 110**

What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not figure out the general formula for the hydrated salt with a molecular mass of 258g/mol. please help

*November 9, 2010*

**Chemistry**

What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not figure out the general formula for the hydrated salt with a molecular mass of 258g/mol. please help

*November 9, 2010*

**accounting**

The gross pay is $3000 don't know the net pay

*November 9, 2010*

**math**

You would dothe commission divided by the percentage of the commission, so 6.48/.054

*November 8, 2010*

**accounting**

Earnings at regular rate (40hrs x $40) = $1600 Earnings at overtime rate 20hrs x $40 x 1.75 = 1400 1400+1600 = 3000

*November 5, 2010*

**chemistry**

A student performing the water of hydration experiment cant seem to get his hydrate to constant weight. Several times he heats the compound, allows it t cool, and weighs it. But each time he does, he obtains a different mass. can you suggest some possible causes for this dilemma?

*November 3, 2010*

**Chemistry**

A commercial for a well known cleaning powder says that it "shakes out white, then turns blue" what type of reaction os occuring? what compound can one use to produce this effect?

*November 3, 2010*

**Chemistry**

How is water of hydration related to measurement and how it is related to the law of definite composition?

*November 3, 2010*

**Chemistry**

calculate the empirical formula. A chemist heats 50.00g of sulfur under controlled conditions to produce a sulfer-oxygen compund.The mass of the sulfur-oxygen compound is 100.00g. What is the empirical formula of the sulfur-oxygen?

*October 20, 2010*

**Chemistry**

If you use a different mass of magensium metal in an experiment would the empirical formula of the compund be the same?

*October 20, 2010*

**college**

Defendant A was suspected of selling stolen property from his dorm room. An undercover campus police officer knocked on Defendant A’s door. And when answer, asked for an affordable radar detector. In response, defendant A said that he just got two new ones last night. ...

*October 11, 2010*

**crim j**

Should this evidence be excluded? What court case(s) justify your decision?

*October 11, 2010*

**crim j**

Defendant A was suspected of selling stolen property from his dorm room. An undercover campus police officer knocked on Defendant A’s door. And when answer, asked for an affordable radar detector. In response, defendant A said that he just got two new ones last night. ...

*October 11, 2010*

**Physics**

No..so is it 363+699+363 / 240s + 660s ?

*October 5, 2010*

**Phyiscs**

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.80 m/s. During the second part, she rides for 36 minutes at an average speed of 5.20 m...

*October 5, 2010*

**physics**

State the law of acceleration in its full form and give examples of how it works

*September 29, 2010*

**college**

During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 1.3 × 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the electron moves ...

*August 27, 2010*

**physic**

Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 4.5000 kg when weighed in air.

*August 8, 2010*

**math**

please help solve this- i cant do it either

*August 7, 2010*

**math fractions**

whats 1/8 of $84.00

*July 16, 2010*

**child care**

b) because im in middle school now so im kinda of an expert

*July 16, 2010*

**Economics**

Hsjaj7272

*July 13, 2010*

**Geometry**

B is the midpoint of Symbol for segment A C. . AB=5x+2 AC=12x-2 What is the value of BC? Show your work for credit. Line segment A C with point B on it.

*July 1, 2010*

**math**

As a restaurant owner there are many decisions that you need to make on a daily basis, such as where to keep inventory levels. You wish to replenish your stock of dishes by purchasing 250 sets for your restaurant. You have two dish design from which to choose. One design costs...

*June 21, 2010*

**chem**

Is the following true or false? The actual size of a measurement multiplied by a conversion factor remains the same, because the measurement being converted is multiplied by 1.

*June 11, 2010*

**algebra1**

what formula should i use to solve this quadratic formula? 2x2 + 4x + 2 = 0.

*June 7, 2010*

**statistics**

I need help for this question asap thanx

*May 3, 2010*

**statistics**

Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. Estimate the percentage of staff who in a week travel: 1. a)less than 80 miles b)more than 250 ...

*May 3, 2010*

**Chemistry**

i really don't know why it would be important

*March 31, 2010*

**Chemistry**

Why is it important for you to know how to separate solids from liquids?

*March 31, 2010*

**calculus**

for x is an element of [-11,11]the function defined by f(x)=x^7(x+3)^6. where does the function achieve its minimum?

*March 29, 2010*

**chemistry**

predict the pH of the solution obtained when a 1.0 M magnesium hydroxide solution is titrated with an equal amount of a 1.0 M solution of sodium chloride.

*March 29, 2010*

**Spanish**

Mi hermano quieren jugar al futbol.

*March 29, 2010*

**Chemistry**

What are some periodic trends among the following elements- carbon, silicon,germanium,tin, and lead?

*March 23, 2010*

**Chemistry**

yes but how is it compared

*March 23, 2010*

**Chemistry**

When you look up the atomic masses of Si and Sn and then find the average and then look up the atomic mass of Ge, what is discovered? does it lend supporting evidence to the periodicity of elements?

*March 23, 2010*

**Chemistry**

I need help describing some periodic trends in the periodic table

*March 23, 2010*

**Chemistry**

why do elements within a group have similar chemical properties?

*March 23, 2010*

**Chemistry**

What does the study of the periodic table have to do with classification and prediction?

*March 23, 2010*

**law of definite composition**

when performing an experiment using potassium chlorate and heating it to form potassium chloride what reasons can you offer for any differences between your results and another lab group in your class?

*March 10, 2010*

**chemistry**

why is the law of definite composition important?

*March 10, 2010*

**chemistry**

how could you determine whether all the potassium chlorate had been decomposed after heating it using the law of definite composition?

*March 10, 2010*

**Physics**

A bat flying in a cave sends out a sound wave to navigate. If the cave temperature is 10.8 C, and the sound the bats sends out takes 0.0679 s to echo back, how far away is the cave wall

*February 28, 2010*

**Physics**

If you are standing on the edge of a canyon and yell into the canyon, how long will it take the echo to return to you if the opposite canyon wall is 1060.4 m away and the air temperature is 25.2 C?

*February 28, 2010*

**Physics**

What is the fundamental frequency for tube resonating in water if the speed of sound was 343.5 and the tube was 0.274 m out of the water.

*February 28, 2010*

**Chemistry**

calculate the number of atoms in 31.5g of cadmium

*February 18, 2010*

**US Government**

Thank you Ms. Sue. Goodnight

*February 17, 2010*

**US Government**

Why was the separation of powers among the branches important to the founding fathers? Thanks so much! Ash

*February 17, 2010*

**US Federal Government**

thank you very much!

*February 17, 2010*

**US Federal Government**

How is popular sovereignty present in US Federal government? I know popular sovereignty means the people have the primary source of governmental authority (it also had to do with slaves states and how a state registered their vote as a slave state or not a slave state... HELP...

*February 17, 2010*