Wednesday

May 6, 2015

May 6, 2015

Total # Posts: 1,736

**Physics**

A freight train has a mass of 4.78 * 10^7 kg. the locomotive provides a force of 1.3 * 10^6 N and the brakes provide a force of -3.2 * 10^3 N. 1. How long will it take for the train to accelerate to it's maximum speed of 15 m/s? 2. The train accidentally stumbles into an ...
*March 14, 2014*

**English**

Can someone help me figure out what me figure out what my teacher is talking about here. I had to write a self introduction and she told me that I had spelling errors and redundant words. I don't see where she's talking about. My name is Devyn Donahue. I am originally ...
*March 13, 2014*

**English**

Got it!! Thank you so much for your help.
*March 13, 2014*

**English**

Does this sound any better? My study habits consist of reading aloud, note taking and last minute cramming. The reading aloud and note taking has always worked well for me. Last minute cramming hasn’t work very well. I seem to always draw a blank on test day. I found ...
*March 13, 2014*

**English**

Hi, Can someone help me with my online Psychology assignment? She is a stickler for punctuation and grammar. I have not taken English yet. I need all the help I can get. The following is my assignment and response. For this assignment, I'd like you to think about your ...
*March 13, 2014*

**math**

Help pleaseeee The Hotel Regal has 500 rooms. Currently the hotel is filled. The daily rental is $ 400 per room. For every $4 increase in rent the demand for rooms decreases by 8 rooms. Let x be the number of rooms that are being rented in the hotel. What should x be so as to ...
*March 5, 2014*

**Science**

Umm may I ask Daniel Brown if you are in Commonwealth Connection Academy?
*March 4, 2014*

**Science**

I am not sure because I am trying to check the same quiz :(((
*March 4, 2014*

**English**

Hi, can you help me with this please? I am taking a online Psychology course. The teacher is a stickler about your punctuation and grammar. The following is my assignment and then my response. For this assignment, I'd like you to think about your study habits using the ...
*March 3, 2014*

**(I need alot of help in) Physics**

Okay its starting to make sense to me now. Thanks for taking the time to explain this to me!
*February 28, 2014*

**(I need alot of help in) Physics**

Im starting to guess that for question one would velocity be independent of mass I asked someone else about two and they said the slopes should be neg because dv/dt = -g and since gravity is always downward then slope is neg. As for the property I'm still not sure.
*February 28, 2014*

**(I need alot of help in) Physics**

So in physics lab we did an experiment with a cart with two different masses on a air track (practically eliminating kinetic friction). The track was tilted at 4 degrees. Using 4 photo-gates I got the speed of both gliders and the height at each point. I made two graphs making...
*February 28, 2014*

**behavioral statistics**

How could you use standard scores and the standard distribution to compare the reading scores of two students receiving special reading resource help and one student in a standard classroom who does not get special help?
*February 25, 2014*

**Physics**

You are general in the Napoleonic wars. You are on top of a plain 12m talk and you have a cannon tht can shoot a cannonball out at 350 m/s. 800 m away is a thick forest that you cannot see into but one of your scouts in a hot air balloon has just signaled to you that an enemy ...
*February 22, 2014*

**Physics**

You are a general in the Napoleonic wars. An enemy fort 10m tall is located 1000m from your cannon. Your cannon expert is insisting that you will get the best results at an angle of 25 above the horizontal. Your cannon is located on a hill 10m tall. You have soldiers storming ...
*February 22, 2014*

**Physics**

You are a general in the Napoleonic war. The battle has taken you to a trench 7m deep. You have a mortar that will fire an explosive at a speed of 200 m/s at an angle of 80. You have a low flying reconnaissance airplane scouting out the enemy troops at a height of 500 m. Your ...
*February 22, 2014*

**Physics**

Suppose you are a general in the Napoleonic wars. You are no top of a plain 50 m high overlooking the enemy soldiers. You now have a brand new cannon that will decimate the enemy. Unfortunately in the christening process you used some rather cheap grade champagne and all the ...
*February 22, 2014*

**Physics**

A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
*February 20, 2014*

**Physics **

You are general in the Napoleonic wars. You are on top of a plain 12m talk and you have a cannon tht can shoot a cannonball out at 350 m/s. 800 m away is a thick forest that you cannot see into but one of your scouts in a hot air balloon has just signaled to you that an enemy ...
*February 19, 2014*

**Physics **

You are a general in the Napoleonic wars. An enemy fort 10m tall is located 1000m from your cannon. Your cannon expert is insisting that you will get the best results at an angle of 25 above the horizontal. Your cannon is located on a hill 10m tall. You have soldiers storming ...
*February 19, 2014*

**Physics **

You are a general in the Napoleonic war. The battle has taken you to a trench 7m deep. You have a mortar that will fire an explosive at a speed of 200 m/s at an angle of 80. You have a low flying reconnaissance airplane scouting out the enemy troops at a height of 500 m. Your ...
*February 19, 2014*

**Physics**

Suppose you are a general in the Napoleonic wars. You are no top of a plain 50 m high overlooking the enemy soldiers. You now have a brand new cannon that will decimate the enemy. Unfortunately in the christening process you used some rather cheap grade champagne and all the ...
*February 19, 2014*

**Physics**

A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
*February 19, 2014*

**Physics**

A cannon shoots a cannonball with an initial speed of 25 m/s at an angle 13. 1. What is the x component of the cannonballs initial velocity Vox? 2. What is the y component of the cannonballs initial velocity Voy? 3. What will be Vy, the y component of the cannonballs final ...
*February 19, 2014*

**Physics**

A cannon fires a free projectile at an angle 85 from the ground. The cannonball has a speed of 150 m/s and it is launched from a hill 20 m above the plain where it will land 1. What is the x component of the cannonballs initial velocity 2. What is the y component of the ...
*February 19, 2014*

**Math**

1/25
*February 19, 2014*

**Physics **

A cannon fires a free projectile at an angle 85 from the ground. The cannonball has a speed of 150 m/s and it is launched from a hill 20 m above the plain where it will land 1. What is the x component of the cannonballs initial velocity 2. What is the y component of the ...
*February 17, 2014*

**Physics **

A cannon shoots a cannonball with an initial speed of 25 m/s at an angle 13. 1. What is the x component of the cannonballs initial velocity Vox? 2. What is the y component of the cannonballs initial velocity Voy? 3. What will be Vy, the y component of the cannonballs final ...
*February 17, 2014*

**Physics**

A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?
*February 17, 2014*

**Advanced Maths **

A reservoir is fed by two pipes of different diameter. The pipe with the larger diameter takes three hours less than the smaller pipe to fill the reservoir. if both pipes are opened simultaneously, the reservoir can fill in two hours. Calculate how long it takes the pipe with ...
*February 15, 2014*

**Physics **

A jet plane has a takeoff speed of Vto=125km/h (34.72 m/s) and it's engines can power it to accelerate with an average acceleration of 5.6 m/s^2. A.) what length of runway will it need to take off safely? B.) suppose it had an available runway length of only 75m. What ...
*February 8, 2014*

**physics**

Standing at the edge of a cliff 240 m tall. You throw a ball into the air one directly upward at 5 m/a and another downward at -5 m/s. Use conservation energy to show that they will have the same speed at the bottom. I know I have to do it twice.. And it should seem simple. I ...
*February 8, 2014*

**physics**

A car is moving down a highway at -15 m/s and accelerating at 3 m/s^2. If it's initial position is at x = 0 m where will it be after 3 seconds?
*February 8, 2014*

**Anatomy and Physiology**

cerebrum
*February 4, 2014*

**public speaking**

Mandy interviewed a source who told about how she was illegally treated by the police. using her information in the speech is an example of: a. facts and statistics b. narrative c. testimony d. hypothetical example i chose b
*January 29, 2014*

**public speaking**

In conducting a personal interview, setting limits on what will be covered should occur: a. at the beggining of the interview b. in the middle of the interview c. at the end of the interview d. during the strategy stage i chose d
*January 29, 2014*

**public speaking**

when researching for supporting materials about the impact of violence in the media, it is a good idea to get assistance from this resource. a. television b. call-in radio c. librarian d. personal interview i chose d. but it wasnt correct
*January 29, 2014*

**math**

What is the formula or simpler equation for 33+32+31+30+29+28...
*January 26, 2014*

**Algebra**

Write a formula to express the given relation. The area A of a rhombus is one-half the product of the diagonals p and q.
*January 26, 2014*

**academic execellence**

Which of the following is NOT a potential consequence of plagiarism? A. Academic warning B. Academic probation C. Failing the course D. Cancellation of the program Is the answer C..failing the course?
*January 22, 2014*

**academic execellence**

c?
*January 22, 2014*

**academic execellence**

Becoming a discerning consumer of research is something you can achieve by practicing good research skills and using your A. critical thinking B. education C. resources D. college library
*January 22, 2014*

**geometry**

abcd is a square picture frame. efgh is a square inscribed within abcd as a space for a picture. the area of efgh (for the picture) is equal to the area of the picture frame (the area of abcd minus the area of efgh). if AB=6, what is the length of EF
*January 10, 2014*

**pre algebra**

Ryan is thinking of a number. When he multiplies this number by 6 and then subtracts 15 from the answer, he ends up with his original number. What number is Ryan thinking of?
*January 10, 2014*

**pre algebra**

Laura takes very good care of her vehicles. She owns a blue van and a red truck. Although she bought them both new, she has owned the truck for 17 years longer than she has owned the van. If the sum of the ages of the vehicles is 41 years, how old is the van and how old is the...
*January 10, 2014*

**please help me!! with this science!!!!!**

I NEED HELP WITH THIS its a TEST: 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere hydrosphere geosphere biosphere 2. Erosion and weathering are examples of which types of forces? (1 point) constructive forces destructive forces gravitational ...
*January 7, 2014*

**algebra**

simplfy 5/ (8+ã7)
*December 23, 2013*

**Math**

Solve for X in the equation x2 - 2x - 63 = 0.
*December 16, 2013*

**Reading Skills**

marriage is usually a family affair
*December 16, 2013*

**Politics**

thanks for your assistance
*December 12, 2013*

**Politics**

d. Political alienation
*December 12, 2013*

**Politics**

A major factor contributing to nonvoting is A. high income B. partisanship c. reductions of barriers to voting D. political alienation Is the answer B
*December 12, 2013*

**math words problem**

Rich’s weekly salary is based on the number of pairs of shoes he sells. He is paid a base salary of $25, plus $5 for every pair of shoes he sells. The relationship between his pay (p) and pairs of shoes (s) sold can be represented by the linear equation . Determine Rich&#...
*December 12, 2013*

**MATH Albera**

Sales at a certain department store follow the model where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below $50,000?
*December 12, 2013*

**MATH**

The cost of tuition at Johnson Community College is $190 per credit hour. Each student also has to pay $60 in fees. Write a linear equation model for this situation. Use C for the cost and x for the number of credit hours.
*December 12, 2013*

**American Government**

Recent trends in political participation show that people are A. more involved in personal volunteer efforts but less involved in poltical party activity. B. less involved in political parties and more invoved running for public office. C. more involved as voters and less ...
*December 8, 2013*

**Math**

Teng is designing a house and in each room he can choose from tiles, floorboards, or carpet for the floor. a. How many combinations of flooring materials are possible if her designs a 2 room studio? b. How many combinations are possible for a 3 room apartment? c. How many ...
*December 8, 2013*

**Math**

if you have a graphing calculator, go to catalog (normally you can get there by hitting the 2nd button than 0), then hit the alpha button and hit T then scroll up to stdDev which is standard deviation, hit enter, then type in the bracket (to get to is 2nd button then ...
*December 8, 2013*

**math**

16/25 (8/5)/2=.8 .8^2=(16/25)
*December 8, 2013*

**data management**

so, the answer would just be 1/6? or should it be 1/6 x 1/6= 1/36 since 2nd throw is 1/6 and fist is 1/6 too?
*December 5, 2013*

**data management **

a die is thrown twice. what is the probability that the sum of the rolls is greater than 9 given that the first roll is a 4?
*December 5, 2013*

**data management **

In a simple card game, Player A wins a point if either a face card, a red prime number, or a black perfect square number is drawn from a standard deck. Otherwise, Player B wins a point. Assume aces do not count as 1s.
*December 5, 2013*

**Chemistry- DrBob222**

0.2g of an organic sample W, analysed by combustion analysis results in 0.48g of CO2 and 0.1636g of H2O. We had a second sample 0.2g of W again producing 0.0618g of ammonia. Show that only C, H and N exist in W and find its emperical formula.
*November 30, 2013*

**Chemistry- DrBob222 Urgent Please help**

Name these: a) CH2=CH-CH=CH2 b) CH3-CH=CH-C(TRIPLE BOND)CH c) CH3-CH2-CH2-CH(Cl)-CH(Br)-CH3
*November 26, 2013*

**math**

31divided by 5,087
*November 14, 2013*

**Chemistry- DrBob222**

Can you please write the isomer name though? I will draw it from that. Write an isomer of structure for a), b) and c) and name them. a) 3,3-dimethylpentane b)3-methyl-4-ethyl-1-hexyne c)3,3,4-trimethyl-1-pentene
*November 13, 2013*

**CHEMISTRY PLEASE HELP**

Write an isomer of structure for a), b) and c) and name them. a) 3,3-dimethylpentane b)3-methyl-4-ethyl-1-hexyne c)3,3,4-trimethyl-1-pentene
*November 13, 2013*

**CHEMISTRY PLEASE HELP**

disregard this question. I posted it in a better form further up.
*November 13, 2013*

**CHEMISTRY PLEASE HELP**

Write an isomer of structure for a), b) and c) and name them. *(N.B- ! rep. a bond) a) CH3 ! CH3-CH2-C-CH2-CH3 ! CH3 CH3 ! b) CH3-CH2-CH-CH-C(TRIPLE BOND)CH ! CH2 ! CH3 c) 3,3,4-trimethyl-1-pentene
*November 13, 2013*

**chemistry**

How do you draw the structure of the reaction of 1-hexene with h2o in the presence of acid
*November 13, 2013*

**Finance**

A 10-year bond has a coupon rate of 7% annually and a principal payment of $1,000.0. Other similar bonds are paying 9% annually. To determine the value of the bond you must find the interest factors, IF. at: A. 9% for 10 periods B. 9% for 20 periods C. 4.5% for 20 periods D. 4...
*November 10, 2013*

**CHEMISTRY**

Why is the atomic emission spectrum of hydrogen composed of lines? What does each line indicate? Why do the lines become closer together from left to right in a typical diagram?
*November 5, 2013*

**math**

Solve a. log a = 3 b. log 1,000 =a c. loga = –2
*November 4, 2013*

**finance**

Which of the following is true with regards to rising interest rates. A. Use long-term loans to take advantage of current low rates. B. The term of the loan is ot impacted by rising interst rates. C. Use short term loans to take advantage of low iterest rates. D. Select long-...
*November 3, 2013*

**Finance**

which of the following is true with regards to rising interest rates? A. Use Long-term loans to take advantage of current low rates. B. The term of the loan option is not impacted by rising interest rates. c. Use Short-term to take advantage of low interst rates. D. Select ...
*October 31, 2013*

**Finane**

C. Interst rate risk
*October 31, 2013*

**Finane**

The possibility that the fed may raise the discount rate is an example of A. Political Risk B. Exchange rate risk c. interest rate risk d. liquid risk
*October 31, 2013*

**Fianace**

A 10-year bond has a coupon rate of 7% anually and a principal payment of $1,000.00. Other similar bonds are paying 9% annually. To determine the value of this bond you must find the interest factors, IF. at: A. 9% for 10 periods B. 9% for 20 periods C. 4.5% for 20 periods d. ...
*October 30, 2013*

**Chemistry**

Having some difficulty with this question. Can anyone help me please? Thank you in advance for your time. 85 microliters of acetophenone (120.15 g/mol, 1.03 g/ml) was reacted with 3.0mL of aq NaOCl (5% available chlorine) to give 72mg of benzoic acid (122.12 g/mol) as a white ...
*October 28, 2013*

**CHEMISTRY URGENT**

Does anyone have a "Chemistry in Context 6th edition" by mcgraw and hill book? I don't have one and my homework is in there. Page 30, questions 5,6 & 7. If you could, type out the questions for me that would be a HUGE help.
*October 25, 2013*

**Chemistry**

Calculate the mass of AgCl that will dissolve in 100ml of 2 M NH3 ksp AgCl = 1.7x10^-10 and Kf of Ag(NH3)2 = 1.6x10^7
*October 25, 2013*

**Personal finance**

Josh has decided to take a course at the local community college that could help him get a promotion at work. The course begins at 5pm and goes until 9pm on monday nights. Josh normally works until 5pm each day, but because of the drive time he will leave work at 3pm on class ...
*October 24, 2013*

**personal finance**

which of the following is a credit management decision? a. Purchasing a used car. b. investing your savings in a stock market c. obtaining a student loan to attend college d. putting money into your retirement account
*October 24, 2013*

**Business English**

It is the case that good communicators advance more quickly in the company. Which of the following would be the best revision of this sentence?
*October 17, 2013*

**maths**

a flagpole cast a shadow 18m long when the altitude of the sun is 54 degrees.what is the height of the flagpole
*October 10, 2013*

**Human and Social Biology**

Describe how social biologist may help to solve the the problems of lack of houses a nd problem ooof sanitation
*October 8, 2013*

**Chemistry**

How many years will it take for 88g tritium to decay to an 11g sample?
*October 6, 2013*

**Physics**

A rocket of 500 kg accelerates away from earth with an engine thrust of 13,500 N. a) what is the weight of the rocket? 4900 N b) how fast did the rocket accelerate? (I know the answer is 17.2 m/s^2 but how did they get that?)
*October 5, 2013*

**Math **

When they dial 3 and turn the oven on, it is like pushing the old button 3 times. That means if they start with one pizza in the oven, dial 3, and turn the oven on, they will get 27 pizzas. (33 = 27) Then if they dial -3 and turn the oven on it is like flicking the old switch ...
*September 30, 2013*

**Math**

Chen’s father was 25 when Chen was born. In 5 years Chen will be exactly half his father’s age. a. Try to figure out how old Chen is now. Describe how you got your answer. b. Now solve the problem using equations.
*September 30, 2013*

**Algebra**

The Big Screamer Coaster carries 92 people altogether. Some of its cars carry 4 passengers, and the rest carry 6 passengers. There are three less 6-passenger cars than 4-passenger cars. How many 4-passenger cars are there? Please help!
*September 26, 2013*

**physics**

A car exciting the highway moving at 27 m/s slows down at the rate of 3.5 m/s^2 to a final velocity of 18 m/s. Calculate the distance the car travels while braking?
*September 26, 2013*

**Math**

Steve has the correct solution, but the method used in the Common Core lesson involves proportions. The current ratio of maple to oak trees is 3:11 and there are now 132 oak trees. 3 maple trees X maple trees ------------- = --------------- 11 oak trees 132 oak trees using ...
*September 19, 2013*

**Finance**

Chip’s Home Brew Whiskey management forecasts that if the firm sells each bottle of Snake-Bite for $20, then the demand for the product will be 15,000 bottles per year, whereas sales will be 91 percent as high if the price is raised 18 percent. Chip’s variable cost ...
*September 13, 2013*

**Chemistry**

Calculate the volume of 5.6 kg of ethanol that has the density 0.785 g/cm3
*September 10, 2013*

**human physiology**

Please help, with the following question: "When an enzyme reaches its saturation point,..." A) the amount of substrate for the enzyme to act upon is very high B) the amount of substrate for the enzyme to act upon is very low C) the amount of product produced ...
*August 27, 2013*

**algebra**

A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?
*August 20, 2013*

**Trig hep, please? Thank you!**

I will try the others soon.
*August 17, 2013*

**Trig hep, please? Thank you!**

thanks! what do the question marks stand for. and also CAST?
*August 17, 2013*

**Trig hep, please? Thank you!**

1. Find the exact value of sin(195(degrees)) 2. If cot2(delta)=5/12 with 0(<or =)2(delta)pi, find cos(delta), sin(delta) , tan(delta). 3.find the exact value of sin2(x) if cos(x)= 4/5. (X is in quadrant 1) 4. Find the exact value of tan2(x) if sin(x)=5/13. ((X) in quadrant ...
*August 17, 2013*