Saturday
February 6, 2016

Posts by michael

Total # Posts: 1,800

Physics
A hollow sphere has a uniform volume charge density of 2.22 nC/m3. The inner radius is a = 12.2 cm and the outer radius is b = 24.4 cm. What is the magnitude of the electric field at 18.3 cm from the center of the sphere? What is the magnitude of the electric field at 78.1 cm ...
February 2, 2016

math
In my math class tests are 70% and homework is 30% so if i wanted at least an 80% how much would be the least percentage i needed in each category
February 1, 2016

math
In my math class tests are 70% and homework is 30% so if i wanted at least an 80% how much would be the least percentage i needed in each category
February 1, 2016

Physic
A tray move with a velocity of 10m|s in 2 minute. calculate the distance covered.
January 31, 2016

Math
Tony had an equal number of cranberry bars and walnut bars. He gave away 66 cranberry bars. He then had 4 times as many walnut bars as cranberry bars left. How many bars did he have at first?
January 28, 2016

algebra 8th grade
rectangle is dilated by 9. image is dilated using scale factor of 1/8. How do I figure out the scale factor that the original rectangle cold have been dilated to get the final rectangle
January 25, 2016

English
Reed, between Roosevelt and Herbert. I know President Roosevelt, but very little of the Great Depression. And again thank you.
January 21, 2016

English
Ms. Sue I know, but I don't know how to start or something.
January 21, 2016

English
Critical Thinking questions Need help!! Due tomorrow. 1. According to each President, who could best bring about social and economic change? 2. What actions did each President take to respond to the Great Depression? 3. Roosevelt asserted that the expanded reach of the federal...
January 21, 2016

math
6x2-13xy+5y2 (2x+13+6x+5
January 18, 2016

Algebra
On Monday, Linus made 5k paper cranes and gave 2k paper cranes to his friends. On Tuesday, he made another 4k paper cranes. His friend gave him 5 paper cranes. How many paper cranes does he have now in terms ok k?
January 11, 2016

Math
5m6 --- 3n
January 11, 2016

Math
A Shopkeeper sold a total of 15 boxes of pencils on Monday and Tuesday. He sold 3 more boxes on Monday than on Tuesday. There were 12 pencils in each box. How many pencils did he sell on Monday?
January 10, 2016

Math
Apples are sold at 3 for $2 at Busy Mart. At Big Foods, the same apples are sold at 5 for $2. Kassim buys 15 apples from Big Foods instead of Busy Mart. How much does he save?
January 10, 2016

Math
Elena bought 49 packets of red balloons, 66 packets of blue balloons, and 35 packets of yellow balloons. Each pack contained 12 balloons. She mixed them up and gave away some balloons. She then repacked the balance into packets of 25. How many balloons where there altogether?
January 9, 2016

Geometry
Thank you very much :D
January 7, 2016

Geometry
I really need help with this question :( A pentagon has two exterior angles that measure (3x), two exterior angles that measure (2x + 22) and an exterior angle that measure (x + 41). If all of these angles have different vertices, what are the measures of the exterior angles ...
January 7, 2016

English
What is Szymborska's overall opinion of humanity in "A Contribution to Statistics?" Support your response with at least two details or quotes from the poem. ___ I'm kind of torn on this one, because I want to say it's a pessimistic tone on humanity...but ...
January 2, 2016

Science - Please Help!!!
Its B
December 10, 2015

Math
A box that holds an expensive pen has square ends, and its length is 13 cm longer than its width. The volume of the box is 60 cm^3. Determine the dimensions of the box.
December 4, 2015

Algebra II
Thanks, Steve! Yes on #4 its suppose to be +2x so my bad.
November 24, 2015

Algebra II
Need help please. Thank you. 1. Determine whether the function has a maximum or minimum. State that value. f(x)= -2x^2-4x 2. Determine what c would in order to complete the square. x^2-5x+c 3. Solve the quadratic by factoring. 3x^2-16x+5=0 4. Solve the quadratic by factoring. ...
November 24, 2015

Physics
An airplane is circling an airport by traveling a horizontal circular path at a speed of 400 km/h. The bank angle of the wings is 20 degrees. What is the radius of the circular path the plane is flying? I honestly do not know where to start this. And it is an algebra-based ...
November 13, 2015

science
What would be the volume of a gas inside a 360cm box?
November 11, 2015

mathematies
a car travels 175km in 7/2 hours and how far will it travel in 3/2hours
November 3, 2015

math
If a book is discounted by 15% and you save $3.00, how much is the book originally?
October 29, 2015

maths
ok guys i have a question if i have a printer that prints 9 pages per second how much will be 500 please awnser thank you! :D
October 27, 2015

Chemistry
If you add 14g of Hydrogen to excess oxygen, how much water should form?
October 19, 2015

Physics
Orville walks 330 m due east. He then continues walking along a straight line, but in a different direction, and stops 160 m northeast of his starting point. How far did he walk during the second portion of the trip and in what direction?
October 18, 2015

Math
Lisa can shovel her driveway in 30 minutes and Tom can shovel his driveway in 40 minutes. How long will it take them to shovel the driveway together?
October 13, 2015

Samuel
The 10th term of an A.P is -27 and the 5th term is -12.what is 18th term?also find sum of it's 25terms
October 11, 2015

Statistics
If you throw a six sided die twice, what is the probability that you will get: (i) A one on the first throw OR a two on the second throw ? (ii) A one on the first toss AND a two on the second toss of the die ?
October 5, 2015

Physics
Let your car have a mass of 825 kg. Your car is moving at a speed of 3.08 m/s when it strikes a parked car and stops in 0.21 s. What force did the parked car exert on it to stop it that quickly?
October 5, 2015

algebra
Solve P=2l+2w for w
October 3, 2015

Physics
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 14 m/s, skates by with the puck. After 3.5 s, the first player makes up his mind to chase his opponent. (a) If he accelerates uniformly at 4.0 m/s2, how long does...
October 1, 2015

Physics
Select the motion diagram that corresponds to each of the four situations. E.g., if diag. A corresponds to the first situation, diag. C to the second, and none of the diagrams to situations 3 and 4, enter ACNN. Note that the velocity and acceleration vectors are shown; both ...
September 29, 2015

Chemistry
I am doing an elementary experiment regarding separating mixtures. My mixture contained NaCl, SiO2, and CaCO3. In the beginning, I calculated the mass of my mixture (all components together). As I completed the experiment, some of the elements were lost either by partial ...
September 27, 2015

Biology
Which of these classifications is most specific? Family Genus Phylum Order I really need help on this question, and if u can do it THANK YOU SO MUCH! Its for my Biology test.
September 24, 2015

Physics
A small container of water is placed on a carousel inside a microwave oven, at a radius of 13.5 cm from the center. The turntable rotates steadily, turning through one revolution each 6.90 s. What angle does the water surface make with the horizontal? Im lost on how to do this...
September 23, 2015

Science
A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored the dissolved oxygen ...
September 22, 2015

Physics
A car is at mile marker 132 on the highway heading North. Of the car is traveling with a velocity of 24 mi/hr, what mile marker will the car be at after 150 minutes
September 12, 2015

Physics-Trajectory
Henry’s post is incorrect. Instinctively, it might be easier to just plug in the values for t, but in order to find speed from a position equation, you must take the derivative. V(x) = x ‘(t) V(y) = y ‘(t) Then take the magnitude of both components. It may help ...
September 11, 2015

health
How dose lock-and-key mechanism relate to hormones? A. If a hormone fits the receptor site, then there is no reaction. If a hormone and a receptor site do not match, then there will be an effect. B. If a hormone fits the receptor site, then there will be an effect. If a ...
September 10, 2015

algebra
You and your friend part at an intersection. You drive off north at a constant speed, and your friend drives east at a speed that is 10 mph higher. After 4 hours the distance between you and your friend is 368.78 miles. You have been driving at mph. (Round to the nearest mile).
September 7, 2015

Geometry
On Line ABCDE If BD exceeds CD by 10 and If BD=x^2 and CD = x + 4, compute x. I tried: BD = CD + 10 X^2 = (x+4)+10 x^2 = x+14 That's where I get stuck. Do I convert to: x^2 - x -14 = 0 ? If so, how do I solve for x? Thank you in advance for any assistance!
August 31, 2015

Physics
Jonathan walks up stairs that are inclined at 25 degrees to the horizontal and 10m long. A.How far has he moved vertically? B.How far has he moved horizontally?
August 31, 2015

History
C B C
August 24, 2015

Math
No dude, can you explain how to get 7.7?
August 18, 2015

URGENT CHEMISTRY
1. Write the equilibrium expressions for the following reactions: a) 2 N2O(g) + O2(g)  4 NO(g) b) H2(g) + CO2(g)  H2O(g) + CO(g) c) 4 HCl(g) + O2(g)  2 Cl2(g) + 2 H2O(g) d) 3 H2(g) + N2(g)  2 NH3(g) e) H2(g) + Cl2...
August 4, 2015

geology
True or False: Sand dunes are one of the most stable features on the Earth's surface.
July 15, 2015

Math
Prove the identities: (sin^2x-1)^2 = cos(2x)+sin^4x
May 15, 2015

Math
dfrhdffhffdhfhfhfhffhhfddhfhfdhdhfhfdhfdh
May 13, 2015

chem
I meant 3 sig figs.
May 12, 2015

chem
Thanks for the help! I around my answer to 4 sig figs, so my answer is 21.4 g of NO. thanks for the help again!
May 12, 2015

chem
Use the balanced equation, N2 + O2 --> 2NO, to answer the following questions... A) How many grams of NO are formed from 10.0g of N2? I really don't know how to do this, so please show work so i know. There are more questions to this question but i want to see how it ...
May 12, 2015

Math
The sea ice around the south pole fluctuates between 18 million square kilometers in September to 3 million square kilometers in March. During how many months are there more than 15 million square kilometers of sea ice?
May 8, 2015

Music
how would you relate the phrase (messed around) with education
May 7, 2015

math calc
A water tower is located 354 feet from a building. From a window in the building, an observer notes that the angle of elevation to the top of the tower is 42° and that the angle of depression to the bottom of the tower is 20°. How tall is the tower? How high is the ...
April 21, 2015

Trigonometry
I found the answer! i just need to change my mode settings from radians to degrees or i could of change the degrees to radians without changing the mode(maybe?).
April 20, 2015

Trigonometry
A 19-ft ladder leans against a building so that the angle between the ground and the ladder is 80∘. How high does the ladder reach on the building? I did 19sin(80) to get me 18.76847847 for how high the ladder reach on the building... but when i put the answer, it's ...
April 20, 2015

math
3/8 × 5/6 = 15/48
April 16, 2015

math
LeanNE walks at an average speed of 3 1/3 mph. How far does she walk in 2hrs 15 minutes? 10/3 × 9/4 == 90/12 would equal 7 1/2 miles
April 16, 2015

trigonometry
For B... i meant to say 48/7 pi not 487pi
April 13, 2015

trigonometry
I wont be receiving credit for these problems but i was just wondering how would i answer them... A) The area of a sector of a circle with a central angle of 25π rad is 21 mm². B) The angle between 0 and 2π in radians that is coterminal with the angle 487π ...
April 13, 2015

Physics
3. A bullet is fired from at a shooting range. The bullet hits the ground after 0.32 seconds. How far did it travel horizontally and vertically in this time if it was fired at a velocity of 1100 m/s?
April 12, 2015

Geometry
Write a two column proof: Given: ABCD is a parallelogram BQ is conguent to DS, PA is congruent to RC Prove PQRS is a parallelogram
April 9, 2015

chemistry
Phosphorus reacts with water to form hydrochloric acid and phosphoric acid. how many moles of acid are formed when starting with 4.5 g of PCl5 and excess H2o?
April 9, 2015

Math
Put this matrix in Reduced Row Echelon Form. Make sure that you list the Elementary Row Operations that you use and show every step in order to solve this. [ 1 2 1 -2 -3 1 3 5 0]
April 9, 2015

Math
Put this matrix in Reduced Row Echelon Form. Make sure that you list the Elementary Row Operations that you use and show every step in order to solve this. [ 1 2 1 -2 -3 1 3 5 0]
April 8, 2015

trigonometry
You are standing on the equator of the earth (radius 3960 miles). a) what is your linear speed in miles per hour? b) what is the angular speed in radians per hour?
April 8, 2015

math
how can you use a right angle to decide how to name another fraction
March 30, 2015

math
6/n=5/10
March 24, 2015

Chemistry
An unknown gaseous hydrocarbon contains 85.63 % carbon. If its density is 0.488 g/L at 0.355 atm and 100°C, what is the molecular formula of the gas? I can't figure this out. By assuming the total mass to be 100g, I get 85.63g C and 14.37g H which I then used to get ...
March 18, 2015

spanish Homework
The directions say... Complete the following sentences with the correct preterit form of the logical verb in parentheses. Here I have listen 3 out of the 15 questions. I am not really sure what the directions are asking me to do. Mis padres me ____ (llegar / llamar) por tel&...
March 10, 2015

Chemistry
Calculate the pH of a buffer that is 0.130M in NaHCO3 and 0.295M in Na2CO3
March 4, 2015

Chemistry
Why is it that Hydrogen fluoride has a boiling point of 19 degree celsius, whereas water has a boiling point of 100 degree celsius.
February 25, 2015

Physics
A flight controller determines that an airplane is 34.0mi south of him. Half an hour later, the same plane is 42.0mi northwest of him. The general direction of the airplane’s velocity is? If the plane is flying with constant velocity, what is the direction of its velocity...
February 24, 2015

physics
A 7.00-kg bowling ball moves at 2.15 m/s. How fast must a 2.40-g Ping-Pong ball move so that the two balls have the same kinetic energy?
February 17, 2015

math
Marty ate 4/6 of his pizza and Luis ate 5/6 of his pizza. Marty ate more pizza than Luis. How is that possible?
February 11, 2015

Math
On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage? How can i set this up? I need help please.
February 10, 2015

physics
a 0.25 kg mass at the end of a spring oscillates 2.2 times per second with an amplitude of 0.15m. Determine the speed when it passes the equilibrium point and the speeed when it is 0.1 m from equilibrium
January 25, 2015

physics
a spring with a k=225 N/m is attached to a ball (m=1.00kg) on a horizontal frictionless table. The ball is pulled 15.0 cm to the right and then released: Find f
January 25, 2015

Business Communitcation
1. job seekers 2. someone is looking for a job or internship
January 25, 2015

Business Communitcation
I'm coming up with a study guide for the class test but need an answer to this: Analyze the implied audience of these two web pages: Career Builder and University of Dayton Career Services. careerbuilder (dot) com udayton.edu (slash)careerservices 1. Who is the audience ...
January 25, 2015

Health
Can a girl take a pregnancy test 5 days before her missed period? And when is the best time for her to take the test?
January 16, 2015

Maths
The first, third and ninth terms of an arithmetic sequence form the terms of a geometric sequence. Find the common ratio of the geometric sequences. a, a+2d, a+8d a+2d/a = a+8d/a+2d ?
January 16, 2015

statistics
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
January 12, 2015

Statistics
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours
January 12, 2015

physics
A child is pulling a sled across a horizontal surface by a rope that makes a 27.5 degree angle with the ground. The child pulls with a force of 32.7 N and the total mass of the sled is 23.5 kg. Find the weight of the sled.
January 7, 2015

language arts
your welcome!
December 10, 2014

language arts
To me yours sounds like D but I haven't gotten that far yet. The reason I agree with that is how arrogant he originally was and this question ask how he changed so it really does sound like D
December 10, 2014

language arts
I am going to go check it out!! Connections is online school! I have read the two chapters and listened to youtube reading of them and the only thing messing with me is the fact more than one answer can be found in those chapters so maybe I should reread the questions..:) I ...
December 10, 2014

language arts
Are you in connections? I am having a tough time with chapter 1-2 the questions make it hard to understand which one is correct. In the QC I am stuck on all of the answers are in the book Seriously not following this story at all apparently :(
December 10, 2014

English Check!! The Cay
Thanks I did have it marked as C but to be honest I was concerned that it may be A as the choice for A does get described in the first chapter...I am still confused on this one
December 10, 2014

English Check!! The Cay
The Cay Which of the following details from the exposition will most likely connect to the larger plot of the story? A)the german submarines are described as silent hungry sharks B)Phillips fathers name is also Phillip C) The Germans sink the Empire Tern as it leaves Curacao...
December 10, 2014

Language arts Check answers please!!
Anyone?
December 10, 2014

Language arts Check answers please!!
The Cay Which of the following passages from the novel best describes the setting? A) I was not frightened just terribly excited B) The fort looks as though it came out of a storybook with gun ports along the high wall that face the sea ***** I choose this one! C) My mother ...
December 10, 2014

language arts
What chapter are you on?
December 9, 2014

Math
How many people can eat 2 pizzas
December 2, 2014

Math
A ladder is leaning against the side of a house so that it can reach a window that is 25 feet off the ground. The angle in which is formed between the ladder and the ground is 52 degrees. How far from the base of the house is the base of the ladder? Round the answer to the ...
December 2, 2014

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