Saturday

April 30, 2016
Total # Posts: 1,091

**Physics**

R = 6378000 meters a₁ = R + (212 miles + 246 miles)/2 a₁ = 6746540 meters a₂ = R + 60 miles a₂ = 6474561 meters GMₑ = 3.986e14 m³ sec⁻² Energy per unit mass in present orbit. E₁/m = −GMₑ/(2a₁) E₁/m...
*December 28, 2011*

**american history**

3)king Ferdinand the second and queen Isabella 4)he's describing how theblabd is different from his and as hes seeing its different, he sees potential and how useful it could be for the queen. 5) "trees are different from those of our country as day is from night"...
*December 18, 2011*

**english, can you check over my answers? thanks!**

The coach pointed to the relief-pitcher. Th infinitive phrase is to the relief-pitcher It's a noun phrase?
*December 16, 2011*

**Math 109**

If an account has a 3.4% interest rate compounded monthly, how much money do you need to invest now to have $10,460 in 10 years?
*December 13, 2011*

**Math 109**

Your cousin has just won the lottery and wants to create an account that will have $100,000 in 16 years to help pay for their child's college tuition. If the account has a fixed interest rate of 4.6% compounded 3 times each year, how much money should they put into the ...
*December 13, 2011*

**math**

Wouldn't you do all the multiplication first, such as 4*2, and then divide that into 8 to =1; then 24-1+12=35? Where is my thinking faulty?
*December 7, 2011*

**math**

could you please solve and show steps for: 24-8/4*2+4(3)
*December 7, 2011*

**math**

could you please solve and show steps for: 24-8/4*2+4(3)
*December 7, 2011*

**Math!! Please help!!!**

Its not meant to represent a line. :/ Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate
*December 6, 2011*

**Math!! Please help!!! **

Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate.
*December 6, 2011*

**algebra**

ooh okay yeah that was so easy now that I look at it thank you so much..it was 10
*December 5, 2011*

**algebra**

ok I have a algebra question how do you find the missing number for 42-9=43-? how do I get the answer and I need to understand it? I think the answer might be 45
*December 5, 2011*

**physics**

please help: 2 horizontal forces, one 180.0 N and the other 200.0 N, are exerted in opposite directions on a boat on a lake. What is the net horizontal force on the boat? Thanks for your help.
*November 30, 2011*

**physics**

tow horizontal forces, one 180.0 N and the other 200.0 N, are exerted in opposite directions on a boat on a lake. What is the net horizontal force on the boat? Thanks for your help.
*November 30, 2011*

**English**

Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?
*November 29, 2011*

**Calculus AB/AP**

A tank with a rectangular base and rectangular sides is to be open at the top. It is to be constructed so that its width is 4 meters and its volume is 36 cubic meters. If building the tank costs $8 per square meter for the base and $4 per square meter for the sides, what is ...
*November 28, 2011*

**Math- Please Help!**

Can it even be solved?
*November 14, 2011*

**Math- Please Help!**

Lalph Rauren was famous for discovering potential models as he walked the streets of New York. One day he spotted four girls who later became top models: Amy, Mary, Kay, and Beth. One was discovered walking through an apartment building, one in a coffee shop, one in a shopping...
*November 14, 2011*

**statistics**

If there are 200 students in a sample, and the mean = 45 and the standard deviation = 4. How many of these students will have a score under 41?
*November 14, 2011*

**Math**

Lalph Rauren was famous for discovering potential models as he walked the streets of New York. One day he spotted four girls who later became top models: Amy, Mary, Kay, and Beth. One was discovered walking through an apartment building, one in a coffee shop, one in a shopping...
*November 13, 2011*

**algebraic expressions**

24/2*3-9*3
*November 8, 2011*

**geometry**

Thank you so much. I got confused when it said equilateral and it gave me two different units.
*November 8, 2011*

**geometry**

An equilateral triangle has sides that measure 5x+3 units and 7x-5 units. What is the perimeter of the triangle?
*November 8, 2011*

**computer**

On most Windows systems, where is the file location data stored? (Points: 5) a. Boot sectors b. DAT c. FAT d. Folders is it D
*November 4, 2011*

**computer**

Which of the following types of computers is considered a portable computer? (Points: 5) a. workstation b. mimicomputer c. server d. notebook is it D
*November 4, 2011*

** computers**

Which of the following types of memory contain data that cannot be modified by the user? (Points: 5) a. simm b. dimm c. RAM d. ROM is it D
*November 4, 2011*

**Statistics**

There is a formula which is n=(za/2)squared •^p•^q/E squared. when ^p and ^q is unknown, use both 0.5. za/2= 99% which is 2.575 ( Its at the chart A-2 at the bottom right). The margin of error is 0.03 which you also squared it. Looks like this: 2.575^2•0.5•...
*October 28, 2011*

**real estate law**

A tenancy at ______ may be terminated at any time by either party. a. leisure b. option c. necessity d. will is it A
*October 26, 2011*

**chem 105**

A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
*October 23, 2011*

**Chem 105**

A 1.5-L container of liquid nitrogen is kept in a closet measuring 1.3 m by 1.3 m by 1.8 m. Assuming that the container is completely full, that the temperature is 22.3 C, and that the atmospheric pressure is 1.2 atm , calculate the percent (by volume) of air that would be ...
*October 23, 2011*

**chemistry 105**

A 260-mL flask contains pure helium at a pressure of 743 torr. A second flask with a volume of 480 mL contains pure argon at a pressure of 715 torr. If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? in torr ...
*October 23, 2011*

**Chemistry 105**

Consider the following chemical reaction. 2H2O(l) -->2H2(g)+O2(g) What mass of H2O is required to form 1.6 L of O2 at a temperature of 330 K and a pressure of 0.954 atm?
*October 23, 2011*

**Chemistry 105**

thank you
*October 23, 2011*

**Chemistry 105**

An experiment shows that a 114 mL gas sample has a mass of 0.168 g at a pressure of 697mmHg and a temperature of 30 C. What is the molar mass of the gas? in g/mol
*October 23, 2011*

**Chemistry 105**

Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations: CF3Cl+UV light-->CF3+Cl Cl+O3-->ClO+O2 O3+UV light-->O2+O ClO+O-->Cl+O2 What total volume of ozone measured at a pressure of 22.0 mmHg and a temperature of 220...
*October 23, 2011*

**Chemistry 105**

A syringe containing 1.75 mL of oxygen gas is cooled from 96.4 C to 0.4 C. What is the final volume of oxygen gas? in mL
*October 23, 2011*

**Chemistry 105**

Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon dioxide gas at STP.
*October 23, 2011*

**Chemistry 105**

The air in a bicycle tire is bubbled through water and collected at 25 C. If the total volume of gas collected is 5.65 L at a temperature of 25 C and a pressure of 729 torr, how many moles of gas was in the bicycle tire?
*October 23, 2011*

**Chemistry 105**

A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123 mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas...
*October 23, 2011*

**Chemistry 105**

A sample of nitrogen gas in a 1.86-L container exerts a pressure of 1.32 atm at 20 C. What is the pressure if the volume of the container is maintained constant and the temperature is raised to 354 C?
*October 23, 2011*

**Chemistry 105**

A sample of N20 gas has a density of 2.65 g/L at 298 K. What must be the pressure of the gas (in mmHg )?
*October 23, 2011*

**Chemistry 105**

A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.3 atm?
*October 23, 2011*

**Chemistry 105**

A sample of gas has an initial volume of 33.0 L at a pressure of 1.1 atm. If the sample is compressed to a volume of 10.0 L, what will its pressure be? (Assume constant temperature.)
*October 23, 2011*

**chemistry 105**

Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)-->2LiN(s) What mass of lithium (in g ) is required to react completely with 59.9 mL of N2 gas at STP?
*October 23, 2011*

**Chemistry 105**

What is the pressure in a 10.0-L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K?
*October 23, 2011*

**5th Grade Science**

What are the 4 main causes of erosion?
*October 20, 2011*

**5th Grade Science**

What does weathering erosion and deposition do?
*October 20, 2011*

**5th Grade Science**

Prevention of erosion??
*October 20, 2011*

**5th Grade Science**

Creation of landforms??
*October 20, 2011*

**Healthcare professionals**

Hospitals frequently seek ways to ensure survival. Sometimes an adversarial climate cannot be avoided if the action that is being considered is controversial. For example, a hospital may seek to expand its market reach by opening an inpatient drug treatment facility in a small...
*October 20, 2011*

**math**

determine the maximum or the minimum value for each a)y=2x^2+12 b)y=-3x^2-12x+15 c)3x(x-2)+5
*October 16, 2011*

**Math( please help)**

thank you !!!
*October 16, 2011*

**Math( please help)**

a ball is kicked in the air from the top of a cliff. the path the ball travels is given by the equation h(t)=-5t^2+17t+22 where h(t) is the height in metres and t is the time in seconds a) what is the maximum height that the ball reaches b)when will the ball hit the ground
*October 16, 2011*

**Math( please help)**

a ball is kicked in the air from the top of a cliff. the path the ball travels is given by the equation h(t)=-5t^2+17t+22 where h(t) is the height in metres and t is the time in seconds a) what is the maximum height that the ball reaches b)when will the ball hit the ground
*October 16, 2011*

**arithmetic**

THE TOTAL AGE OF GROUP OF PARENTS IS 342.A NEW PARENT AGED 48 JOINS THE GROUP AND THE AVERAGE RISES BY 1. WHAT IS THE ORIGINAL AVERAGE.
*October 11, 2011*

**trig**

THE SIDE OF A RIGHT-ANGLED TRIANGLE ARE 3XCM,3X-1CM AND 4X PLUS 1CM ,THE LAST SIDE BEING THE HYPOTHENUS FIND X.
*October 11, 2011*

**chemistry 105**

Consider the following reaction: Li2S(aq)+Co(NO3)2(aq)-->2LiNO3(aq)+CoS(s) What volume of 0.150 M Li2S solution is required to completely react with 125 mL of 0.150 M Co(NO3)2?
*October 10, 2011*

**chemistry 105**

Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 14.7 g. What minimum mass of H2SO4(in g) would you need? What mass of H2 gas(in g) would be ...
*October 10, 2011*

**chemistry 105**

Complete and balance each of the following equations for gas-evolutions. Express answer as a chemical equation. Identify all the phases in your answer. HCl(aq)+K2SO3(aq)--> HCl(aq)+KHCO3(aq)--> HC2H3O2(aq)+NaHSO3(aq)--> (NH4)2SO4(aq)+KOH(aq)-->
*October 10, 2011*

**chemistry 105**

Complete and balance each of the following equations, some may have no reactions. NaNO3(aq)+KCl(aq)--> NaCl(aq)+Hg2(C2H3O2)2(aq)--> note that Hg(I)^+1 interacts with another Hg(I)^+1 ion to produce the cation Hg2^2+ (NH4)2SO4(aq)+CuCl2(aq)-->
*October 10, 2011*

**Chemistry 105**

Which of the following reactions are redox reactions? 1. Al(s)+3Ag^+(aq)-->Al^3+(aq)+3Ag(s) 2. SO3(g)+H2O(l)-->H2SO4(aq) 3. Ba(s)+Cl2(g)-->BaCl2(s) 4. Mg(s)+Br2(l)-->MgBr2(s)
*October 10, 2011*

**chemistry 105**

to what volume should you dilute 20 mL of a 10 M H2SO4 solution to obtain a 0.130 M H2SO4 solution?
*October 10, 2011*

**chemistry 105**

to what volume should you dilute 20 mL of a 10 M H2SO4 solution to obtain a 0.130 M H2SO4 solution?
*October 10, 2011*

**ap chem**

P4 + F2 = PF3 What mass of F2 is needed to produce 120 gm of PF3, if the reaction has 81.1 % yield?
*October 10, 2011*

**ARATMETICS**

THE ARITHMETIC PROGRESSION 2,5,8,11 AND 3,10,17,24... HAVE SOME COMMAN VALUES.WHAT IS THE LARGEST VALUE LESS THEN 500 THAT THEY HAVE IN COMMAN?
*October 6, 2011*

**Physics **

A puck of mass m = 1.10 kg slides in a circle of radius r = 24.0 cm on a frictionless table while attached to a hanging cylinder of mass M = 3.00 kg by a cord through a hole in the table. What speed (in m/s) keeps the cylinder at rest?
*October 2, 2011*

**math**

isnt it greater than 50?
*September 28, 2011*

**math**

Chris travels for a certain length of time at 40 miles per hour and Donny travels for the same length of time at 60 miles per hour. what is the average speed?
*September 28, 2011*

**Science**

Why is 100g of water and 1000g of water the same density?
*September 27, 2011*

**earth**

Find the ratio of the gravitational attraction between (a)a man of mass 100 kg and a woman of mass 50 kg who is 10 meters away from him and (b) the attraction between the woman and the Earth.
*September 26, 2011*

**nursing**

How do decision theory, probability theory, inference, and generalization relate to data analysis?
*September 23, 2011*

**nursing**

How do mean, median, mode, and standard deviation differ from one another? Support your answers with specific examples
*September 22, 2011*

**nursing**

What is the nurse’s role in data collection, patient privacy, and ethical treatment of human subjects?
*September 22, 2011*

**Word Problem**

A UPS employee, Davis, packs and labels three types of packages: basic packages, business packages, and oversized packages. Business packages take a priority over basic packages, and oversized packages because those customers paid a premium to have guaranteed two-day delivery...
*September 12, 2011*

**Math**

Eggplants in Thailand are 1.24 baht per kilogram, where one dollar is worth 1.37 baht. What is the price of eggplants in dollars per pound?
*September 11, 2011*

**chemistry**

How many milliliters of 1.4 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL
*September 11, 2011*

**statistics**

MEAN=80,SD=10, S=8, N=25 E(M)= SE(M)=
*September 9, 2011*

**math**

I need help multiply these 3 factors. (x+3)(x-3)(x-2)
*September 3, 2011*

**chemistry**

If there are 2.0 grams in 1 meter of copper wire, how many centimeters would be needed to provide .28 grams of copper?
*September 2, 2011*

**math**

if sue delivers 126 papers in a week but she delivers twice as many on saturday and sunday then how many does she deliver on sunday
*August 25, 2011*

**MATH**

Find the area of the parallelogram with vertices at...? (-6,-4), (0,-4), (3,4), and (-3,4) A) 14 B) 48 C) 24 D) PLEASE HELP A.S.A.P., beggers can't be choosers but maybe an explanation?
*August 11, 2011*

**English**

This questions can be asking many different things so hopefully this it what you are wanting.... If you are wanting to know the type of sentence it is a simile. If you wanting to know which part of the sentence makes it "Rhetorical sentence" I am 99% sure it is: (The...
*August 11, 2011*

**math**

The sinusoid y=3cos(x+3)-2 has which of the following? a. phase shift of 3 to the right b. phase shift of 3 to the left c. vertical shift up of 2 d. horizontal stretch by factor of 3
*August 4, 2011*

**college algebra**

e^(-3-x)+22=0 e^(-3-x)=22 ln(e^(-3-x))=ln(22) -3-x=ln(22) -x=ln22+3 x=-(ln(22)+3) x=-6.091
*July 25, 2011*

**college algebra**

Horizontal asymptotes occur when the numerator is equal to 0, vertical when denominator is equal to 0 therefore, in this problem, both asymptotes are 0.
*July 25, 2011*

**Algebra**

The negative sign is misplaced, and must go before the 6x instead of the 5, making the correct factor: 7x(4x^2-6x+5)
*July 25, 2011*

**madical**

You’re reviewing reimbursement for a Medicare surgical craniotomy case. The case falls into a DRG1. Which has a relative weight of 3.0970 and a geometric mean length of stay of 6.3. The hospital’s current standard reimbursement rate is $1500. Calculate the DRG ...
*July 24, 2011*

**Calculus**

A stone is dropped from the edge of a roof, and hits the ground with a velocity of -145 feet per second. How high (in feet) is the roof
*July 22, 2011*

**Calculus**

The circumference of a sphere was measured to be 74.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area
*July 20, 2011*

**GRAMMAR - MT**

Perforation of the tympantic membrane was beleived to be the cause of the patient's vertigoe and myringitis.
*July 16, 2011*

**math**

when you cross multiply how do you get 36y?
*July 10, 2011*

**Juvenile Delinquency**

Do people really change or do they stay the same but appear to be different because their life circumstances have changed?
*July 7, 2011*

**economics- free trade.**

What are the advantages and disadvantages of free trade?
*July 5, 2011*

**Algebra**

In a paragraph, describe how to simplify this expression ã100
*June 15, 2011*

**Physics**

A golf ball is given an initial speed of 20 m/s and returns to ground level. Which launch angle above level ground results in the ball traveling the greatest horizontal distance? Neglect friction. 1. 60 degrees 2. 45 3. 30 4. 15 The answer is 45 but I was wondering how to get ...
*June 15, 2011*

**Physics**

Also: Given that A+B+C=0, find the magnitudes of A and B.
*June 12, 2011*

**Physics**

Vector A points in the negative direction. Vector B points at an angle of 35.0 above the positive x axis. Vector has a magnitude of 10 and points in a direction 46.0 below the positive x axis.
*June 12, 2011*

**Algebra please help**

f(x)=1/3(x+7)^2+4 find the vertex,the line of symmetry, and the max or min. value of the f(x) graph the function. thank you in advance :)
*June 8, 2011*

**world geography**

What are the "many islands" people also called?
*June 5, 2011*

**probability and statistics I NEED HELP**

A six-sided die is rolled 20 times and a 5 is rolled 9 times. a) State a null and alternative hypothesis for the die being fair. b) Can the null hypothesis be rejected at the .01 significance level?
*May 31, 2011*