Tuesday

July 7, 2015

July 7, 2015

Total # Posts: 553

**Maths**

A ball is dropped from a height of 80ft.The elasticity of this ball is such that it rebounds three-fourths of the distance it has fallen. How high does the ball rebound on the fifth bounce? Find a formula for the height the ball rebounds on the nth bounce?
*July 7, 2015*

**Physics**

A stone is thrown upwards from the roof with a velocity 15ms^-1 at an angle 30degree to the horizontal. The height of the building is 40m.calculate the magnitude of the velocity of the stones before it strikes the ground
*July 4, 2015*

**Physics **

A particle moving with uniform acceleration has initial velocity u. With the aid of a velocity time graph, show that the displacement s after time t is given by: s=ut+1/2*gt^2
*July 4, 2015*

**HELP!! Statistics!**

The accompanying data table lists measured voltage amounts supplied directly to a family’s home. The power supply company states that it has a target power supply of 120 volts. Using these home voltage amounts, test the claim that the mean is 120 volts. Use a 0.05 ...
*June 3, 2015*

**INTERVAL OF THE MEAN**

In a test of of garlic for lowering cholesterol, 45 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured beforeandafter the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 5.4 and a sd of 17.5. ...
*May 26, 2015*

**Statistics HELP!**

Use a normal approximation to find the probability of the indicated number of voters. In this case assume that 119 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged 18-24, 22% of them voted. The probability that ...
*May 18, 2015*

**Statistics**

If np ≥ 5 and nq ≥ 5, estimate P (fewer than 4) with n = 13 and p = 0.5 by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq <5, then state that the normal approximation is not suitable. P (fewer than 4) =
*May 17, 2015*

**trig**

Find the bearing and airspeed for a plane to fly 630 miles due north in 3 hours if the wind is blowing from a direction of 318* and is blowing at 15mph. Approximate the bearing to the nearest degree and the speed to the nearest mile per hour.
*April 28, 2015*

**Math- Calc 1**

1. At what point does the normal line to the curve x^2 - XY + Y^2 = 3 at the point (-1,1) intersect the curve again? 2. Find the constants A, B so that if Y=A*sin X + B cos X, then Y satisfies the differential equation Y" + 2Y = 0. 3. Find the points on he graph of Y = e^...
*February 25, 2015*

**Math- Calc 1**

1. At what point does the normal line to the curve x^2 - XY + Y^2 = 3 at the point (1,1) intersect the curve again? 2. Find the constants A, B so that if Y = Asin X = B cos X, then Y satisfies the differential equation Y" + 2Y = 0. 3. Find the points om he graph of Y - e^...
*February 24, 2015*

**algebra**

An alligator’s tail length, T, varies directly as its body length, B. An alligator with a body length of 4.5 feet has a tail length of 2.5 feet. What is the tail length of an alligator whose body length is 5.4 feet?
*February 8, 2015*

**psycholigy**

Cultural learning involves all aspects of the learning processes that psychologists have identified over the years, such include: a. classical conditioning b. operant conditioning c. social learning d. All of the above.
*December 14, 2014*

**Chemistry honors**

20 grams magnesium metal react with excess oxygen and 28 grams of magnesium oxide are produced in lab what is percent yield? If 99.8 g of aluminum nitrate are reacted with excess sulfuric acid what would be the theoretical yield in grams of aluminum sulfate? i have done both ...
*December 4, 2014*

**Physics**

a (n) 1510 kg car is moving along a level road at 13.8 m/s. The driver accelerates and in the next 10s the engine provides 23400 J of additional energy. If 3900 J of this energy must be used to overcome friction, what is the final speed of the car?
*November 7, 2014*

**Math**

Sara wants to put new carpet. She needs 20 square feet. the carpet was $4.00 a square foot. She got it for half price. What was the new cost of the carpeting? And the total?
*October 24, 2014*

**Stats**

A random sample of 100 GMAT scores has a mean of 500. Assume that GMAT scores have a population standard deviation of 120. Construct a 95% confidence interval estimate of the mean GMAT scores. (15 pts) What is the sample size for the conference interval? What is the point ...
*October 12, 2014*

**medical coding2**

does anyone know the answer the this coding question? This 42 Year Old White Male Who Accidentally Injured His Left Finger On A Circular Saw While Working O At Home In His Garagen Broken Shutters
*September 28, 2014*

**Calculus**

"Three hundred books sell for $40 each, resulting in a revenue of $12,000. For each $5 increase in price, 25 fewer books are sold. Write revenue R as a function of the number x of $5 increases." How would you get this problem started?
*September 8, 2014*

**Geom**

Given 70 degrees on a clock tell what time it is
*August 20, 2014*

**algebra**

I was looking for the estimated answer not the correct answer or formula to estimate
*August 8, 2014*

**algebra**

7 1/5 divided by 3/5 estimated
*August 8, 2014*

**algebra**

A manufacturer of birds feeder cut spacers from a tube that is 7 1/5 inches long. How many spacers can be cut from the tube if each spacer must be 3/5 inch thick. The estimated answer is?
*August 8, 2014*

**algebra**

p=b+a+c b=
*August 7, 2014*

**algebra**

z=yn y=
*August 7, 2014*

**algebra**

13x+2>3((2x+1)-x+8
*August 1, 2014*

**algebra**

3x+6+x<1+2x-5
*August 1, 2014*

**algebra**

P=a+b+2c for a
*August 1, 2014*

**Physics**

A heavier mass m1 and a lighter mass m2 are 20.5 cm apart and experience a gravitational force of attraction that is 8.60 10-9 N in magnitude. The two masses have a combined value of 5.80 kg. Determine the value of each individual mass.
*June 22, 2014*

**physical science**

bombarded by high-speed electrons.
*June 11, 2014*

**math**

You need to hire a part-time associate to work 30 hours a week in your store. You have $250 in labor budget for the new associate each week. You just interviewed an excellent candidate for the position who has requested to be paid $9.00 per hour. Your average part-time ...
*May 12, 2014*

**history**

The answer is A
*April 21, 2014*

**Chemistry**

My question is ..can anyone explain how to do problem #2? I feel lost. :( And could you also explain why? Problem#1, is that a regular dG = dH - TdS problem? Then using Go = -RTlnK to find K? Im just afraid if there are other seps to it.. 1. The combustion of butane has the ...
*April 6, 2014*

**Chemistry**

I got it! I was using the incorrect Kb for each of the reactions! Thanks so much!!!
*April 5, 2014*

**Chemistry**

Okay, thank you! I will try this method!
*April 5, 2014*

**Chemistry**

Calculate the concentrations of all species in a 0.390 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8. Species: Na+ SO3 2- HSO3 - H2SO3 OH- H+ Thanks! The only thing I seem to be ...
*April 5, 2014*

**Finance**

Thanks for the help and explanation!
*April 2, 2014*

**Finance**

Kim has money in a savings account that earns an annual interest rate of 4.1%, compounded monthly. What is the effective rate of interest on Kim's account? Round to the nearest hundredth of a percent.
*April 2, 2014*

**science**

an individual's actual appearance. may include physical characteristics, microsoptic or metabolic charisteristics
*March 14, 2014*

**finance**

Thanks for the explanation Henry!
*March 12, 2014*

**finance**

For a $13,000 student loan with a 6% APR, how much of the payment will go toward the principal and how much will go toward paying interest for each of the first six payments? Assume this is a 10-year loan with monthly payments.
*March 12, 2014*

**Liberal Arts Math II**

How long is the perimeter of a snowflake island? A) it is the same as the area B) it is infinite C) 2 times the height D) 3 times the height
*March 11, 2014*

**Business Law II**

Thanks for your help, I read over the others and also dug a little deeper in my book and I think that's the best choice as well.
*March 1, 2014*

**Business Law II**

Okay, I have eliminated A & D
*March 1, 2014*

**Business Law II**

Initially I thought Gramm-Leach-Bliley Privacy Act but I don't see this in my book.
*March 1, 2014*

**Business Law II**

What statute requires banks and other financial institutions to disclose to consumers any non-public information they wish to reveal to third parties? A) Banking and Financial Institution Privacy Act. B) Gramm-Leach-Bliley Privacy Act. C) Electronic Communications Privacy Act...
*March 1, 2014*

**business law**

You make an online purchase of a hooded sweatshirt with the logo of the Dallas Cowboys. The next time you log on, your screen has a banner ad for Dallas Cowboy hats and shirts. This banner ad is most likely the result of: A) a cookie. B) a coincidence. C) the Internet crime of...
*March 1, 2014*

**Liberal Arts Math II**

Choose one of the following statements to complete the sentence. Discuss your reasoning for your selection. Euclid’s treatment of the fifth axiom... A) ... shows that it is important to question the nature of the assumptions that are made. B) ... is now known to be wrong...
*February 26, 2014*

**Business Law II**

Yi conveyed a piece of land by general warranty deed. The deed included a covenant of seisin. With this covenant, Yi promised that: A) she has the power to make the conveyance. B) the land is free from any easement, profit, mortgage, etc. C) no other person can lawfully claim ...
*February 8, 2014*

**Business Law II**

Ross is a wealthy man. Out of the kindness of his heart, he transfers a piece of real property to his church, "for as long as the property is used for church purposes." Ross has created which of the following ownership interests? A) Life estate to the church; ...
*February 8, 2014*

**Math**

problems with words that are is to solve
*February 2, 2014*

**trig**

Thank you so much for the help.
*January 26, 2014*

**trig**

A person stands at a distance from the tower and eyes the top of the tower at 30 degree angle of elevation. He then walks 425 feet towards the tower and eyes the top of the tower at a 58 degree angle of elevation. The person is 5 feet tall. How tall is the tower?
*January 26, 2014*

**Liberal Arts Math II**

The following argument is valid: No student is happy You are happy Therefore, you are not a student A) True B) False
*January 18, 2014*

**Finite Math**

Thank you both. I tried this using the "72 rule" and was discouraged by my answer due to the book answer of 9.64% and I am not sure how that answer is founded.
*January 16, 2014*

**Finite Math**

A person invests $2000 annually in an IRA. At the end of 6 years, the amount in the fund is $14000. What annual nominal compounding rate has this fund earned?
*January 16, 2014*

**Chemistry**

Calculate (in calories) the amount of heat needed to melt 96g of ice at -24 degrees C to water at 28 degrees C.
*January 15, 2014*

**math**

2,3x-5
*December 1, 2013*

**poetry**

What are the names of the different kinds of formats? Stanzas still doesn't make sense to me please elaborate
*October 5, 2013*

**poetry**

Sorry about that yes its supposed to be in this way. Please help in telling me what format is being used. Thanks and sorry about that
*October 5, 2013*

**poetry**

I need to know what format is being used in this poem: Canadian Angels Angels of the House, Angels of Mercy- yes, they've called women that. But these are Angels of Ice,Hard-muscled, sharp, dangerous as winter's cold. How else do you explain their speed, the light ...
*October 5, 2013*

**Finance**

Your small business needs to buy new office furniture for your new headquarters. You have the option of leasing the furniture, or buying the furniture. You can purchase the furniture for $15,000 per year, or lease the same furniture for $5,000 per year for the next four years...
*September 23, 2013*

**Chemistry**

I am having a really hard time setting this problem up to solve can anyone help? Hexane has a density of 0.659 g/mL. How many (mL) would a student need to pour in order to get 49.5g of hexane?
*September 11, 2013*

**math**

medical math guestion
*August 18, 2013*

**Physics**

Two resistors 17.0 Ω and 7.1 Ω are connected in parallel across a 6.00 V battery. a) Find the potential diﬀerence across each resistor. can someone please give me the answer to this?
*July 25, 2013*

**Physics**

A 9.00 V storage battery is connected to three resistors, 4.25 Ω, 11.0 Ω, and 21.0 Ω, respec-tively. The resistors are joined in series. Calculate the equivalent resistance can someone answer this please?
*July 25, 2013*

**Physics**

A 9.00 V storage battery is connected to three resistors, 4.25 Ω, 11.0 Ω, and 21.0 Ω, respec-tively. The resistors are joined in series. Calculate the equivalent resistance.
*July 25, 2013*

**Physics**

A roller coaster mass of 291 kg starts stationary at point A where height 1 = 37 m, and a while later is at B, where height 2 = 11.4 m. The acceleration of gravity is 9.8 m/s^2. What is the speed of cart at B ignoring the effect of friction?
*July 24, 2013*

**Physics**

A neutral ball is suspended by a string. A positively charged insulating rod is placed near the ball, which is observed to be attracted to the rod. Why is this? 1. The ball becomes negatively charged by induction. 2. The string is not a perfect conductor. 3. The number of ...
*July 23, 2013*

**Physics**

Two 1.5 kg balls move away from each other, one traveling 6 m/s to the right, the other 2 m/s to the left. What is the magnitude of the total momentum of the system? Answer in units of kg · m/s
*July 14, 2013*

**Physics**

In Larry Niven’s science ﬁction novel Ringworld, a ring of material of radius 1.54 × 1011 m rotates about a star with a rotational speed of 1.5 × 106 m/s. The inhabitants of this ring world experience a normal contact force ~n. Acting alone, this normal...
*July 9, 2013*

**Physics**

A satellite moves in a circular orbit around the Earth at a speed of 5.9 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. The value of the universal ...
*July 9, 2013*

**Physics**

A 3.21 kg mass attached to a light string rotates on a horizontal, frictionless table. The radius of the circle is 0.855 m, and the string can support a mass of 15.3 kg before breaking. What maximum speed can the mass have before the string breaks? Answer in units of m/s
*July 9, 2013*

**Physics**

A street lamp weighs 158 N. It is supported equally by two wires that form an angle of 107˚ with each other. What is the tension of each of these wires?
*July 2, 2013*

**Physics**

A book weighing 12 N is placed on a table. How much support force does a table exert on the book? Answer in units of N
*July 1, 2013*

**Physics**

a 3.6 kg object is accelerated from rest to a speed of 34.4 m/s in 42 s. What average force was exerted on the object during this period of acceleration. Answer in units of N.
*June 30, 2013*

**Physics**

A 3.6 kg object is accelerated from rest to a speed of 34.4 m/s in 42 s. What average force was exerted on the object during this period of acceleration? Answer in units of N
*June 30, 2013*

**Physics**

a 3.6 kg object is accelerated from rest to a speed of 34.4 m/s in 42 s. What average force was exerted on the object during this period of acceleration. Answer in units of N.
*June 30, 2013*

**Physics**

A dragster and driver together have mass 929.4 kg. The dragster, starting from rest, attains a speed of 26.5 m/s in 0.55s. Assume the driver has a mass of 77.4 kg. What horizontal force does the seat exert on the driver? Answer in units of N.
*June 30, 2013*

**Physics**

A dragster and driver together have mass 929.4 kg. The dragster, starting from rest, attains a speed of 26.5 m/s in 0.55s. What is the size of the average force on the dragster during this time interval? Answer in units of N.
*June 30, 2013*

**Physics**

A dragster and driver together have mass 929.4 kg. The dragster, starting from rest, attains a speed of 26.5 m/s in 0.55s. What is the size of the average force on the dragster during this time interval? Answer in units of N.
*June 30, 2013*

**Physics**

A dragster and driver together have mass 929.4 kg. The dragster, starting from rest, attains a speed of 26.5 m/s in 0.55s. Find the average acceleration of the dragster during this time interval. Answer in units of m/s^2
*June 29, 2013*

**Physics**

A cannon ball whose barrel is angled at 40˚ from the horizontal fires a shell with a muzzle velocity of 350 m/s. What is the resultant velocity of the shell when it lands?
*June 25, 2013*

**Physics**

A cannon ball whose barrel is angled at 40˚ from the horizontal fires a shell with a muzzle velocity of 350 m/s. What is the horizontal and vertical component of the muzzle velocity and what is the range of the shell?
*June 25, 2013*

**Physics**

William Tell fired an arrow with a velocity of 100 m/s at an angle of 30˚. How long will it take to reach its highest point? Please show work
*June 25, 2013*

**Chemistry**

m1v1= m2v2 5* 0.1401 = m2 *5.99 m2 =0.1169449081803005 M H2SO4 + 2NaOH =Na2SO4+2H2O neutralisation reaction
*June 24, 2013*

**Physics (algebra)**

Thanks Steve, taking a physics course for credit this summer, but I am going in to 9th grade and have not had trig yet. Thanks for the formula!
*June 18, 2013*

**English**

That building, now owned by Mrs. Bly, was once an old school. Have you read the story of Joe Louis's life? Leslie's father, Mr. Lorenzo, owns a bicycle shop downtown. Johanna, my sister, loves all forms of art.
*June 18, 2013*

**Physics**

Can anyone help with which formula I should use to solve this: During a head on car crash, the car is designed to slow down as its front end crumples. If a person can survive an acceleration of -33 m/s how far must the front end crumple if the car was initially traveling at 28...
*June 17, 2013*

**Physics**

How far do you travel if you start at 5.6 m/s and slow down at 2.5 m/s until you stop?
*June 17, 2013*

**Physics**

would that be the following equation: d = 1/2 (Vi + Vf)t or Vf^2=Vi^2+ 2ad
*June 17, 2013*

**statistics**

Use the list and calculation method to answer the following questions. Show your work at each step. 4. You draw three cards (with replacement) from a standard deck of cards. What is the probability that a. exactly one will be red: .125 + .125 + .125 = .375 b. none will be red...
*June 7, 2013*

**statistics**

3. A couple is planning on having four children. Assume that the probabilities of the man fathering a boy or a girl are .50 and .50, respectively. What is the probability that a. exactly two will be boys, b. fewer than two will be boys, and c. more than one will be a boy? ...
*June 7, 2013*

**statistics**

Give examples of nominal, ordinal, interval. and ratio data. Then, convert your ratio data example into interval, ordinal, and nominal scales. Measurement Scales Practice 1. Indicate the first letter (N, O, I, R) of the highest possible scale for each of the following measures...
*June 2, 2013*

**statistics**

Measurement Scales Practice 1. Indicate the first letter (N, O, I, R) of the highest possible scale for each of the following measures, where N is lowest and R is highest: Measure Highest Scale a. Feet of snow Interval b. Brands of carbonated soft drinks Nominal c. Class rank ...
*June 1, 2013*

**Criminal justice **

What are the primary modifications of the classical school made by neoclassical criminology? Define moral panic according to Stanley Cohen. Compare the concept to the disaster analogy, especially the politics of media construction of particular moral panics. In your opinion ...
*May 23, 2013*

**Criminal justice**

What are the primary modifications of the classical school made by neoclassical criminology?
*May 23, 2013*

**Math**

$1081.30
*May 19, 2013*

**Calculus**

Actually it would be: f ' (t) = 0.6t + 0.6 (not t squared as the original reply showed)
*May 13, 2013*

**Calc BC**

Let f be the function defined by f(x)=(4x-8)/(x^2+5x-14) write an equation of the lien normal to the graph of f at x=1 how?
*May 3, 2013*