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Posts by CASSANDRA

Total # Posts: 272

physics
convert an acceleration of 4.1 mi/h/s to m/s^2

physics
a 21.2 kg mass attached to a spring scale rests on a smooth, horizontal surface. the spring scale, attached to the front end of a boxcar, reads T=35.6N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the acceleration of the car, ...

physics
If a seagull flies to a height of 22.5 meters, how long will the clam take to fall? The acceleration of gravity is 9.8m/s. answer in units of sec

math
(exponents and roots) Michael wants to fence in a new garden so that the garden has an area of 625 square feet. If his garden is in the shape of a square, what is the length of each side?

Social Studies
To survive in different areas, native people had to learn to?

Health
C. Environment and genetic factors

algebra1
A rule of thumb states that the ideal weight (in ounces) of a baseball bat for a high school player is 5 ounces more than one third of the player's height (in inches). Write an expression that describes the ideal weight in ounces of a bat for a high school player who is h ...

Math
The Pew Research Center recently polled n= 1048 U.S drivers andfound that 69% enjoyed driving their automobiles. (a) Construct a 95% confidence interval for the proportion of U.S.drivers who enjoy driving their automobiles. (b) In 1991, Gallup Poll reported this percent to be ...

physics
State how the centripetal force is provided in the case of a satelite orbiting the earth

Chemsitry
Starting out with 50 mL of 0.20 M NaHCO3, calculate how many mL of 0.50 M NaOH solution to add to make 100 mL of approximately 0.10 M (total) buffer solution with a pH of 10.35. By adding NaOH, some of the NaHCO3 gets converted to the conjugate Na2CO3. This conjugate acid/base...

Chemsitry
A chemist needs to make 50 mL buffer solution with a pH value of 7.25 using the acid/conjugate base pair of KH2PO4 and Na2HPO4 (which has an effective pKa = 6.86). The buffer solution needs to be made so that the total concentration of buffer is 0.10 M (that is, [acid] + [base...

Chemsitry
Tris is an abbreviation for tris (hydroxymethyl) aminomethane, which is a weak base. Calculate how many grams of tris (mw=121.14g/mol) are needed to make 25mL of 0.10M tris solution. Calculate how many mL of 0.25M HCl are needed to convert half of the moles of tris present in ...

pre-algebra
oh you don't have to worry about it.

pre-algebra
thomas borrowed $4800 to buy a new car. he will be paying $96 each month for the next 60 months. find the simple interest rate for his car loan.

Pre-algebra
thank you!

Pre-algebra
i got 216 would that be right?

Pre-algebra
$1200 at 6% for 36 months

Chemistry
A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the endpoint. 1. How ...

Chemistry
in step 2 aren't you supposed to divide by the molar mass of vitamin C (176.12)?

Chemistry
would 5.61x10^-5 make sense for the molarity for the original unknown sample of vit C solution prior to dilution?

Chemistry
Nevermind. i figure it out. Thank you so much for your help!

Chemistry
to find the molarity of the original vit C do you just divide the moles found in 1 divided by 0.001 L or 1.0 mL?

Chemistry
to find the total moles of iodine, do you just multiple 8.5x10^-4 by .00660 L?

Chemistry
we are not given the molar mass of the vit. C. how are we supposed to find the milligrams of vit C are in the orginal sample?

Chemistry
A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the endpoint. 1. How ...

physics
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.60 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point located 2.34 m from ...

Chemistry
Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL. Chemical reaction: Blue dye + ClO^- -->...

Chemistry
Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Chemical reaction: Blue dye + ClO^- -->oxidized dye +Cl^- Reaction #1: 5.0 mL or diluted bleach solution, 15.0mL of distilled water, 10.0 mL of diluted blue dye Reaction #2: 10.0mL of diluted...

Chemistry
Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL.

Chemistry
Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL.

physics
An object is thrown upwards and after 2 seconds is 78 m above where it was initially thrown. Assume no air resistance, and determine the initial speed the object was thrown at.

math
7k-8k=1 how would you do this?

math
thank you

math
3(x+ -5)+7(x+2)

math
after i looked at it a couple times i figured it out how you did it thank you(:

math
can you please explain this..

math
4+9c+3(c+2)

media
Huge corporations own every television network and most other media outlets. How does this affect their news coverage? How much influence do you think these corporations have on the public? Do you think the public is aware of the comments made by you and your classmates? (...

discussion
What is the difference between current sources and relevant sources? Is it possible a source might fit one category, but not the other? How?

COM 156
What websites do you normally frequent? Are these websites credible? When is credibility more important and when is it less important? Support your answers with specific examples

science
How is the temperature of a substance related to the energy of movement of the particles in the substance?

social studies
Thank you so much

social studies
C) cities...This was my second choice. Am I right?

social studies
In Korea, Modern ways are much more visible in? a)villages b)communes c)cities d)farming communities I picked B Communes but not sure

Science
what is the net ionic equation for: Mn+Ni(NO3)2 -> Mn(NO3)2+Ni Is the answer no reaction or is Nickel considered a state change??

PHYSICS
Given: The initial position of the block is the origin; i.e., x = 0 at t = 0 . Consider down the track to be the positive x-direction. A block with an initial velocity v0 slides up and back down a frictionless incline. Which graph best represents a description of the velocity ...

math
so would it be 12x15? 12x20 ? etc...

math
TILING A decroative floor pattern has one red square tile surrounded by 12 blue tiles. Write and evaluate an expression to show how many total tiles (red and blue) are needed if there are 15 red tiles. Then make a table showing the total number of tiles if there are 15,20,25, ...

math
6+4(3)

math
Thank You so much!

math
2[(10-3) + 6(5)] = what? I can up with 74

Statistics
Each year, approximately 160 colleges compete in the National Concrete Canoe Competition. Each team must design a seaworthy canoe froma a substance not known for its capacity to float. The canoes must weigh between 100 and 350 pounds. Find the midrange.

geometry
Find the area of the parallelogram that has coordinates of A(-2,2), B(-4,-2), C(2,-2), and D(4,2). Find the base and height first.

english
i not sure micheal jordan and john miltion for the second one

english
4.Type the appositive(s) in each sentence. You do not need to include the commas. The famous basketball player Michael Jordan was known for his performance under pressure. 5. Type the appositive(s) in each sentence. You do not need to include the commas. A brilliant poet, John...

^^Brand Extension^^
okay. but i don't want that example from wikipedia. I want something else. is there another food item example you give to me plese?

^^Brand Extension^^
wat does brand extension mean? cud u give me an example? Brand extension or brand stretching is a marketing strategy in which a firm marketing a product with a well-developed image uses the same brand name in a different product category. The new product is called a spin-off. ...

^^Brand Extension^^
wat????? me no understand^^

^^Brand Extension^^
wat does brand extension mean? cud u give me an example?

geometry
it is recommended that for a height of 20 inches,a wheelchair ramp be 19 feet long.what is the value of x to the nearest tenth>

math
7 - (-15) equals?

math
7 minus -15 equals? would that be a -8?

math
thank you

math
-1 minus 8 equals? is 7 the correct answer

math
thank you so much

math
The temperature at 1:00 p.m. was 88 degrees farenheight. This was 12degrees warmer then at 8:00 a.m. Earlier on the same day, the temperature fell 7 degrees farenheight from midnight to 4:00 a.m. Then it rose 6 degrees farenheight from 4:00 a.m. to 8:00 a.m. What was the ...

math
thank you

math
does a -8 plus -7 equal 15 then?

math
Thank you...after awhile of doing these I start to get confused so I wrote it down now. Thanks again.

math
ok..and a negative times a positive is a negative and the same for dividing a negative by a positive it is always negative?

math
can you just clear this up for me... a negative times a negative is a positive? a negative divided by a negative is a positive also?

math
thank you

math
so what if you have a -18 divided by -3 is the answer then 6?

math
thank you

math
when adding a negative with a positive the answer isn't always negative?

math
14 positive

math
-1 plus 15 equals what?

math
thank you

math
when adding and subtracting integers does 2 negatives equal a positive? And does 1 positive plus 1 negative number equal a negative?

math
what is 20 plus a -3?

math
thank you

math
what is 5 divided by -4?

math
thank you

math
63 divided by -7 is what?

math
-8 x 7 = ?

spelling
thanks so much

spelling
What is akways before you but you never can see it? using the letters: f,e,u,r,u,t...

chemistry
.Cholesterol C27H46O 2. During transport, cholesterol exist often exist as lipoprotein form. which mean a large molecule contain both cholesterol and protein. The good form high density lipoprotein (HDL)contain more protein less lipid and bad form contain more lipid than ...

Chemistry
When an element reacts with a compound to produce another element and new compound, the reaction is called?

history
when and how does Germany unite? What are the causes and consequences of the rebellions 1837-36 upper and lower canada? What are the causes of movement and the liberal movement National Europe in the first Motie nineteenth sciècle

Chemistry
thank you !

Chemistry
bond angles and polarity for trans-PF3Cl2

math
-0.001 is greater than or lesser than -3/100?

Chemistry
Is [PF5Cl]- polar?

Chemistry
In an experiment we did in class ethanol was poured into a test tube and we noticed that the ethanol did not collect and form a dome at the opening of the tube in the same way that water had. I know why water collected at the opening, but i'm not sure why the ethanol didn...

Geometry
in a right triangle if the adjacent A = 16, and the hypotenuse C = 20 then what is the oppisite B.

science
True or False...The CLOSER the origin of an earthquake to an inhabited area , the greater the destruction?

geometry
x=48

health
HCR23

accounting
Select a company that you are familiar with from the transportation industry. •Collect the 4 main financial statements from credible sources (e.g., nationally syndicated newspapers, peer-reviewed journals, investor relations, Web sites or annual reports. •Create a ...

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