Sunday

December 21, 2014

December 21, 2014

Total # Posts: 120

**english 11**

In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
*January 7, 2014*

**english 11**

In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
*January 7, 2014*

**chemistry**

what is a catalyst
*October 3, 2013*

**physics**

What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? Note: The electron mass is 9.11 × 10–31kg; and the neutron mass is 1.67 × 10–...
*July 12, 2013*

**math **

convert 2.37 with a reoccurring 37 into a decimal
*May 20, 2013*

**Ap chemistry**

What is the approximate molar fraction of ethanol c2h5oh in an aqueous solution in which the ethanol concentration is 11.0 molal? A. 0.0011 B. 0.011 C. 0.170 D. 0.200 E. 0.600
*May 8, 2013*

**7th grade math**

sorry i havent learned this
*March 18, 2013*

**Physics**

a 60 kg boy on a sled reaches the bottom of a hill traveling at 8 m/s, if he comes to a stop at 20 m along this flat stretch of snow what is the coefficient of kinetic friction between the sled and the ground? (hint: find the acceleration first)
*January 27, 2013*

**Physics**

A glass is slid across a bar top and eventually comes to rest. if the coefficient of friction between the glass and bar top is .32 what is the acceleration it experiences?
*January 27, 2013*

**Physics**

What force of friction would be felt between a 5 kg sled and the ground if a 20 N force is needed to cause it to accelerate at a rate of 1.3 m/s squared?
*January 27, 2013*

**Physics**

A volleyball player serves the ball horizontally with a speed of 23.8 m/s. How far will it have dropped when it reaches a distance 9.1 m
*October 4, 2012*

**AP Chemistry**

If a metal ore contains 21.4% pure metal, how many pounds of pure metal can be obtained from 59 pounds of metal ore? Answer in units of pounds
*September 19, 2012*

**AP Chemistry**

I got 100.276. Do i divide that by 172?
*September 19, 2012*

**AP Chemistry**

14 carat gold has a purity of 58.3%. How many moles of gold are in 172 grams of 14 carat gold? Answer in units of moles
*September 19, 2012*

**AP Chemistry**

For the reaction ? N2H4+? O2 →? N2+? H2O , what is the maximum amount of N2 (28.0134 g/mol) which could be formed from 14.75 g of N2H4 (32.0452 g/mol) and 4.31 g of O2 (31.9988 g/mol)? Answer in units of g
*September 19, 2012*

**AP Chemistry**

When 0.055 moles of lead(II) nitrate are dissolved in enough water to make 803 mililiters of solution, what is the molar concentration of nitrate ions? Answer in units of M.
*September 19, 2012*

**MATH**

I don't know but i need help with the same question!!!....... A company sells cardboard that is 9 1/8 mm thick. Write an equation to solve for the number of sheets of cardboard, c, in a pile that is 255 1/2 mm thick. What must be done to both sides to solve the equation?
*May 24, 2012*

**English**

A B B A
*May 13, 2012*

**Chem 2 Lab**

Calculate the volume of a 0.150 M NaOH solution that will be required to neutralize all of the H+ ions in 0.400 grams of phosphoric acid?
*April 25, 2012*

**Biology**

Both, because of the reduction of nitrate to nitrogen gas makes it biological and chemical.
*April 25, 2012*

**Science**

On the second question kidneys secrete H+ ions when the pH becomes too low in the blood so the blood won't become too alkaline.
*April 25, 2012*

**Chemistry**

Consider the reaction CH4+ 2Cl2=CCl4. If .33 moles of CH4 is reacted with 1 mole of Cl2, how much CCl4 is produced?
*April 12, 2012*

**chemistry**

but how do i balcane the charges? i don't understand what to do with them. i know i am supposed to bring them down, but down where?
*March 1, 2012*

**chemistry**

How do you balance a chemical reaction word equation?!
*March 1, 2012*

**geometry**

1. A triangle has side lengths of 8, 10, and 12. what kind of triangle is it? 2. A triangle has side lengths of 3, 4, and 7. what kind of triangke is it?
*January 12, 2012*

**Algebra **

A box contains 15 blue marbles, 25 yellow marbles, 20 green marbles and 40 red marbles. How many ,arbles must you select to be sure that a green marble has been chosen ?
*December 18, 2011*

**Algebra 2 **

Write a system of inequalities in which x and y are each greater than -3, but not greater than 2. Can someone please help???
*October 27, 2011*

**Math**

thank you so much!!!!!!!
*October 9, 2011*

**Math**

two cones have radii in the ratio 5:4 and height 2:3, determine the ratio of their volumes . where V=1/3pier^2h
*October 9, 2011*

**civics**

what is a good strategy for remembering 2 paragraphs of the constitution?
*September 27, 2011*

**math**

First, you have to change miles into feet. There are 5,280 feet in 1 mile. Next, you need to multiply 5,280 feet by 26 miles, to see how many feet are in 26 miles. The answer is 137,280. The last step is to divide 5,280 feet by 137,280 feet. This gives you roughly .0385 feet.
*March 31, 2011*

**Stats**

An instructor gives a test with 20 multiple choice questions. There are 4 responses per questions and only one choice correct. The test also has 30 True/False questions. Determine the probability a student randomly guessing on all questions and correctly answering no more than...
*March 31, 2011*

**Grammer**

2. I should of written down where(were) I last put them. 3.I don't want to(too) buy that. It's to expensive
*March 23, 2011*

**Grammer**

2. I (should’ve) written down where i last put them. 3 is correct 4. A evening out can be a great way to clear one's mind.
*March 23, 2011*

**Grammer**

4.A evening out can be a great way to clear one's mind.
*March 23, 2011*

**Grammer**

2. I should of written(wrote) down where I last put them. 3.I don't(do not) want to buy that. It's to expensive number 4 is correct
*March 23, 2011*

**Grammer**

Can you help me with these sentences.Review the following sentences. Some of them are correct, whereas others contain an error with a commonly confused word. 1.The diplomats are doing what they can to restore peace. 2.I should of written down where I last put them. 3.I don&#...
*March 23, 2011*

**Science**

On a day with an air temperature of 75°F, you read the psychrometer and determine the relative humidity to be 74%. A sudden weather change (that does not affect the actual moisture content of the air) reduces the relative humidity to 70%. What was the temperature change?
*February 28, 2011*

**Intermediate Algebra**

I have a 72% in this class, but I think I made an F on my final, what is my final grade? please help me!!!
*December 15, 2010*

**algebra**

Describe the steps to graph the direct variation equation y = – 3x. In the formula d = rt, what do each of the letters stand for and how do they relate?
*December 11, 2010*

**statistics**

A random sample of 20 hogs on farmer Brown's hog farm had an average weight of 350 pounds and a SD of 70 pounds. Find 95% confidence interval estimate of the mean weight of all farmer Brown's pigs.
*December 8, 2010*

**Physics**

Ice (initially at 0 degrees celcius)is added to 0.75 L of tea at 20 degrees celcius to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
*December 6, 2010*

**Cultural Diversity**

what is the best way to enplain orientalism and the characteristics of it?
*December 2, 2010*

**Physics**

A solid ball of mass m rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?
*November 14, 2010*

**Math**

50.
*November 5, 2010*

**physics**

A yo-yo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yo-yo if I hold the string with my fingers?
*November 4, 2010*

**PHYSICS ---HELP!**

Consider a hoola-hoop of radius R and it is spinning about its symmetry axis at a constant angular velocity. Now, I double its mass and halve its angular velocity. What is the new angular momentum in terms of the initial angular momentum?
*November 1, 2010*

**PHYSICS ---HELP!**

I get something close to that.
*October 25, 2010*

**PHYSICS ---HELP!**

A 3.6 m diameter merry-go-round is rotating freely with an angular velocity of 0.78 rad/s. Its total moment of inertia is 1700 kg\m^2. Four people standing on the ground, each of mass 62 kg, suddenly step onto the edge of the merry-go-round. 1. What is the angular velocity of ...
*October 25, 2010*

**Finance**

Mary needs $9000 in 7 years. What amount can she deposit at the end of each quarter at 6% interest compounded quarterly so she will have her $9000?
*October 20, 2010*

**physics**

A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius 27.0 cm) without ...
*October 19, 2010*

**2nd time posting bc i still need HELP! PHYSICS!!!!**

I had a problem similar to this but I was using -11.4 m/s and 1.35 s. You can use my calculations below and just plug in your numbers. Velocity of diver just before hitting the water,Vf = - 11.4 m/s Time, t = 1.35 s Velocity of diver before 1.35 s = Vi Vf = Vi - g t - 11.4 = ...
*September 29, 2010*

**physics**

A person jumps from the roof of a house 3.6 -m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 {\rm m}. If the mass of his torso (excluding legs) is 46 kg. Find the average force exerted on his torso...
*September 29, 2010*

**physics/ math**

I figured this out. For those that may need help with a question like this. Because of the North direction being the displacement vector... there was a 90 degree angle. So... (1.1)(cos90) = 0 (1.1)(sin90) = 1.1 Answer: (0, 1.1)
*September 24, 2010*

**physics/ math**

A student bikes to school by traveling first d_N = 1.10 {miles} north, then d_W = 0.500{miles} west, and finally d_S = 0.200 {miles} south. You will now find the same quantity algebraically, without the need to use much geometry. Take the north direction as the positive y ...
*September 24, 2010*

**Physics**

A student bikes to school by traveling first d_N = 1.10 miles north, then d_W = 0.500 miles west, and finally d_S = 0.200 miles south. You will now find the same quantity algebraically, without the need to use much geometry. Take the north direction as the positive y direction...
*September 23, 2010*

**Science**

what mammal order has the following dental formula: 006/406?
*May 5, 2010*

**history**

Coolidge was known as a supporter of big business. what are three examples?
*March 30, 2010*

**probability**

This is wrong!! Spades are ace through K which is 13 plus the other 3 kings which is 16, not twelve.
*March 15, 2010*

**chemistry**

How many milliliters of .50 M NaOH solution are required to titrate 40.0 mL of a 0.10 M H2SO4 solution to an end joint?
*March 6, 2010*

**math**

x over x+2 and x=3
*February 4, 2010*

**algebra**

o Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? o What circumstances would cause you to use a different method?
*January 26, 2010*

**science**

How does a sunflower's energy get transferred?
*January 4, 2010*

**Ruminant Nutrition (college)**

I'm studying for a Ruminant Nutrition final exam and have a couple essay questions that I'm really struggling with... - How do ruminants fit into sustainable food production systems? - Assume that you can genetically modify a rumen microbe to perform any reaction (e.g...
*May 4, 2009*

**Probability**

Two brothers enter a race with 5 others. Racers draw names to determine their starting positions (1 to 6). What's the probability that the older brother will start in lane 1 with his brother directly beside him?
*April 28, 2009*

**logic**

determine the validity of the next arguments by using Euler circles, then translate the statements into logical statements using the basic connectives, and using truth tables, determine the validity of the arguments. Compare your answers. (a) No A is B Some C is A Some C is ...
*April 6, 2009*

**Chemistry**

A 67gr mass of solid iron is heated by a flame until the temp of the iron equals the temp of the flame. The solid iron is then dropped into 250gr of liquid water at 26 degrees C. After 5 mins, the iron and the water are both at 47 degrees C. Specific heat: Iron- .451 Water- 4.184
*March 30, 2009*

**science**

what is the purpose of the ridge on the roof?
*February 22, 2009*

**science**

explain the importance of convection currents to pond life
*February 22, 2009*

**Math - last one**

yes, but why is it t/3?
*November 2, 2008*

**Math - last one**

I just have one more question. I need to find the equation for the following word problem: a group of yeasts cells grows by 75% every 3 hours. At 9 a.m., there are 200 yeast cells. Write an equation that models the number of yeast cells after 9 a.m. So far I've worked out ...
*November 2, 2008*

**Math - I really need help, please.**

oh, thank you so much!
*November 2, 2008*

**Math - I really need help, please.**

A town has a population of 8400 i 1990. Fifteen years later, it's population grew to 12500. Determine the average annual growth rate of this town's population. I really don't understand this problem. I've been going at it for hours and all I've come to is ...
*November 2, 2008*

**Geometry**

Please help solve for: solve for x: m < 2=70 and m < 8 = 6 x - 2
*October 10, 2008*

**nonfiction**

Why in the world would Mrs. Sue put incorrect answers on here? Mrs. Sue, I understand your beliefs in students doing their own work... but, that doesn't give you the right to sabotage a students grade. If you truely want to help, volunteer in a public school to students ...
*October 1, 2008*

**pre algebra**

a rectangle measures 3.9 cm by 9.1 cm what is the area of the rectangle? (a=lw)
*September 25, 2008*

**Geometry**

Thanks so much!
*August 24, 2008*

**Geometry**

Find the value of the variable and ST if S is between R and T. RS=7a, ST=12a, RS=28 No clue what so ever how to do this.
*August 24, 2008*

**Geometry**

so...its lines, lines, and points?
*August 20, 2008*

**Geometry**

plane lines lines i think thats what they are..not sure
*August 20, 2008*

**Geometry**

VISUALIZATION Name the geometric term(s) for: a paritally-opened news paper woven threads in a piece of cloth satellite dish signal
*August 20, 2008*

**Math**

2/9
*August 20, 2008*

**Geometry**

nvm, i figured it out i think
*August 20, 2008*

**Geometry**

Name at least four ordered pairs for which the sum of coordinates is -2.
*August 20, 2008*

**English**

A thesis statement is a focused selection of text that can be anywhere from just one sentence to a few pages in size that clearly delineates the argument that will be taken in a proposed paper to be written. A thesis statement should be prepared in advance for all types of ...
*August 19, 2008*

**Chemistry**

Homogeneous Mixtures: salty water Heterogeneous Mixtures: sandy water
*August 19, 2008*

**Critical Thinking**

A personal mission statement is a brief description of what you want to focus on, what you want to accomplish and who you want to become in a particular area of your life over the next one to three years. It is a way to focus your energy, actions, behaviors and decisions ...
*August 19, 2008*

**Physical science**

the volume of gas is your dependent because it changes according to the temperature
*August 19, 2008*

**math**

how do you make a chart or a table?
*August 19, 2008*

**AP Bio**

FOOD CHAINS FOLLOW A SINGLE PATH AS ANIMALS EAT EACH OTHER. EXAMPLE: GRASS (is eaten by a) GRASSHOPPER (which is eaten by) a FROG (which is eaten by a) SNAKE (which is eaten by a) HAWK -------------- FOOD WEBS SHOW HOW MANY ANIMALS ARE INTERCONNECTED BY DIFFERENT PATHS. ...
*August 19, 2008*

**Algebra**

u must be really really smart, u've answered most of ppls questions, including my own
*August 19, 2008*

**Algebra**

is it 70?
*August 19, 2008*

**Physics**

can scientific laws be changed by a vote?
*August 19, 2008*

**Physics**

Can scientists from other countries change what physicists in the United States think? Need help ASAP work due tomorrow XD
*August 19, 2008*

**sci/275**

lakes, rivers, glaciers
*August 19, 2008*

**Solving for Variables**

1. 2T^2 + 3KT - 3K = 2 (for T) 2. x^3-4x^2 + 6 = 0 (for x)
*August 5, 2008*

**calculus**

how do you find the dy/dx of the square root of x minus the square root of y equal to 10? You have to use implicit differentiation.
*March 23, 2008*

**math**

a punch recipe calls for 1 .5 liters of juice .how many millilitres is this
*March 10, 2008*

**SAT Math... again**

I asked two questions yesterday, and thankfully, bobpursley answered the latter. I accidentally typed in the first question wrong, so I'd really appreciate it if someone helps me out. Thank you, and have a good day :) 1. Kevin is 3 years younger than Nora. If n represents ...
*October 15, 2007*