Friday

April 18, 2014

April 18, 2014

Total # Posts: 161

**physics**

A block with mass m = 24.0 kg slides down an inclined plane of slope angle 41.4 ° with a constant velocity. It is then projected up the same plane with an initial speed 3.80 m/s. How far up the incline will the block move before coming to rest?

**physics**

Buffy is rolling along in her 12.7 kg wagon at 3.6 m/s (in the positive direction) when she jumps off the back. She continues to move forward at 1.2 m/s relative to the ground. This causes her wagon to go speeding forward at 9.51 m/s relative to the ground. How much does Buffy...

**physics**

A block of wood with a mass of 4.62 kg sits on the edge of a table that is 0.99 m tall. A bullet with a mass of 70.5 g traveling with a speed of 450 m/s is shot into the block and is lodged in it. Assuming that no energy is lost to friction, how far from the table will the blo...

**physics**

A balistic pendulum is made from a block of wood with a mass of 2.78 kg. A bullet with a mass of 39 g is shot into the block causing it to rise 29.1 cm. What was the speed of the bullet?

**Physics**

An electron is released between two metal plates 40.0mm apart experiences an acceleration of 1x10^12m/s^2. Determine the potential difference across the plates.

**Surveying**

I am looking for horizontal distance between 2 points. My slope distance is 153.97' and a vertical distance of 91degrees 32minutes 45seconds.

**statistics**

a random sample from the population of registered voters in california is to be taken and then surveyed about an upcoming election. What sample size should be used to guarantee a sampling error of 3% or less when estimating p at the 95% confidence level? is this the answer...1...

**statistics**

assume you have a data set from a normally distributed random variable. answer the following: will the random variable be discrete, continuous, or neither? How do you know? I believe its continuous but cant explain why will the data be qualitative or quantitative? How do you k...

**statistics**

A woman and her son are debating about the average length of a preacher's sermons on Sunday morning. Despite the mother's arguments, the son thinks that the sermons are more than twenty minutes. For one year, he has randomly selected 12 Sundays and found an average tim...

**statistics**

What sample size is required from a very large population to estimate a population proportion within 0.05 with 95% confidence? Don't assume any particular value for p. A. 271 B. 38 C. 385 D. 767

**math**

2) binomial: n=6 p=0.48; x=6 using applet:1.22306% 1-1.22306%=98%

**math**

1)average=4; SD=0.2;sample =100 the expected total = 100*4=400 SE of total= sqrt(100)*0.2=2 (100*3.999-400)/2=-0.05 using applet:-5...-0.05 approximately 48%

**math**

1)average=4; SD=0.2;sample =100 the expected total = 100*4=400 SE of total= sqrt(100)*0.2=2 (100*3.999-400)/2=-0.05 using applet:-5...0.05 approximately 48%

**math**

how to go by doing a personal cash flow statement is it like the regular budgetfor your house.

**Algebra**

The volume of it is 1125 cubic inches, the length is 18 inches, and the width is 15 inches. Can you also show me how to do because I have a test on Friday! Thanks!!! :)

**Chem**

in the reaction NO3+CaCl2=2AgCl+Ca(NO3)2, how many grams of excess will remain when 20 grams of AgNO3 are reacted with 15 grams of CaCl2

**Math**

I think it would be C but I'm not sure.....

**math**

how many ways can you arrange three banks on a shelf

**finance**

what is the future value of $2,000 in a bank account for 6 years at 4 percent compounded bimonthly

**Discreet MAth**

Wow hes actually right

**stat**

Did anyone answer this?

**Accounting**

Spencer Company manufactures and sells three products. Relevant per unit data concerning each product are given below. Product A B C Selling price $9 $12 $14 Variable costs and expenses $3 $9.50 $12 Machine hours to produce 2 1 2 Compute the contribution margin per unit of the...

**Accounting**

Imagen Arquitectonica of Tijuana, Mexico is contemplating a major change in its cost structure. Currently, all of its drafting work is performed by skilled draftsmen. Alfredo Ayala, Imagen's owner, is considering replacing the draftsmen with a computerized drafting system....

**Accounting**

E6-9 (a,b) Tiger Golf Accessories sells golf shoes, gloves, and a laser-guided range-finder that measures distance. Shown below are unit cost and sales data. Pairs of Shoes Pairs of Gloves Range Finder Unit sales price $100 $30 $250 Unit variable costs 60 10 200 Unit contribut...

**math**

if a 1100 lb motorcycle(w/2 passengers)is doing 40mph,how long will take to come to a complete stop? this is happening with a full brake lock up.skid!in a stright line.

**math**

if a 1100 lb motorcycle(w/2 passengers)is doing 40mph,how long will take to come to a complete stop?

**Physics**

A 170 -pF capacitor is connected in series with an unknown capacitance, and as a series combination they are connected to a battery with an emf of 25.0 V. If the 170 -pF capacitor stores 135 pC of charge on its plates, what is the unknown capacitance?

**calculus**

We need the given interval

**Algebra II**

f(-1)=(-1)^2 -(-1)+1=3 g(3) =-3(3)+6=-3 3 times -3 = 9

**math**

f(x) = y y = 2log(base2)x =log(base2)x^2 therefore 2^y=x^2 so x = sqrt(2^y)

**algebra**

g(-5)=-4(-5)+3=23 f(23) = -2(23)-7 = -53 (f o g)(-5) = -53

**math**

a boy buy a bike for 45$ then sells it for 65$ then buys it back for 90$ then sells it agian for 125$ what percent of money did he make

**calculus**

Evaluate integral from -2 to 3 of 4 lxldx

**stati**

12. Suppose 80% of students finish high school. Of them, 50% finish college. Of them, 20% get a master’s degree. Of them, 30% get a Ph.D. (i) What percentage of students get a Ph.

**statistics**

Assuming that the data are normally distributed with a mean of 45 and a standard deviation of 3.25, what is the z-score for a value of 40?

**french**

yes it that just not sure about the spelling

**algebra**

Find the slope, if it exists x+5y=10

**algebra**

Find the slope, if it exists x+5y=10

**MATH HELP HELP HELP HELP HELP BOBOBOBOBOBOBOBOBOB**

Let a = 349, M = 492186. Show that gcd(a;M) = 1. Hence find the mutliplicative inverse, a^-1 mod M

**Math**

A company has factories located in New Jersey, Ohio, and Georgia where it manufactures handbags, shoes, and belts. How many days should the company operate each factory in order to exactly fill the order of 2150 handbags, 2300 shoes and 2500 belts? Use the information below. H...

**CRIMINAL JUSTICE**

Discuss the three types of management styles that are reviewed in your course materials (Scientific Management, Human Relations Management, and Systems Management). * Which style do you believe would be the most effective to use in the criminal justice system? * What are disad...

**math**

Thank you Sue! My daughter says she thinks she has it now. I hope she does, because I am till confused. You know its true what they say, It's hard to teach an old dog new tricks. Thanks again, Dean

**math**

I came out with a common denominator of 72. do I just put -5/72 + 2/72 = -3/72? I haven't done Algeria in 50 years. I am very rusty.

**math**

how do you add a negetive and a positive faction? -5/8 + 2/9 = ?

**algebra**

write a linear equation to model the situation. Use unit analysis to check your model. You borrow $40 from your sister. To repay the loan, you pay her $5 a week.

**8th grade**

Solve 3r + 18 ¡Ü 6r

**science**

Actually, I really just need someone to confirm my answer. Not to confident b/c it's been a while since I've done much math. 22 ears x 700 kernels = 15,400 15,400 x 1000 = 15,400,000 /90 = 171.111 Am I close?

**science**

A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000 kernels on average. Wha...

**Human Physiology**

A subject with a body weight of 60 kg was injected with 10 ml of a 1% (w/v) solution of Evans Blue. After 10 min, the blood was sampled and found to contain 0.035 mg ml^-1 of the dye. What is the subject’s plasma volume in litres?

**Biology**

During skeletal muscle contraction: Choose one answer. A. the A and I bands do not change length. B. cross bridges are formed between myosin and actin. C. minimal tension can be generated when the muscle is close to its normal resting length. D. the myofilaments change length....

**Biology**

You are given the following protein sequence: NH2-Met-Trp-Trp-Met-Trp-Met-COOH What was the sequence of the mRNA? You must write your answer 5' to 3' direction, starting with the first nucleotide of the mRNA and ending with the last nucleotide of the mRNA. DO NOT INCLU...

**Philosophy**

Got it...thanks!

**Philosophy**

<11{4[2(12)]}> Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. building : blueprint (Points : 1) ship : sea cake : recipe bridge : island guitar : song

**algebra**

it has been found that the world record for the men's 10,000 meter run has been decreasing steadily since 1950. the record is approximately 28.7 minutes minus 0.05 times the number of years since 1950. assume the record continues to decrease in this way. predict what it wi...

**Calculus**

A kicker is setting up for a field goal. The goal is 120 feet away and 10 feet high. The kicker can give an initial speed of 75 ft/s to the ball. What range of angles of elevation are possible to kick the ball so it passes over the goal?

**Spanish**

Me gusta ver el ____ de b`eisbol No puedo jugar Estoy ___ ocupado Vamos a la ___ de cumplean~os de paco help on these last three please?

**Algebra (repost)**

nevermind sorry for waste of space lol

**Algebra (repost)**

Can you help me on this problem as well? (or anyone.) Solve each inequality and check your solution. h - > -7 4 (bumping)

**English-please help**

First of all, you spell sentence, sentence, with a c instead of an s. :)

**Algebra**

Can you help me on this problem as well? (or anyone.) Solve each inequality and check your solution. h - > -7 4

**Algebra**

"Do the two inequalities have the same solutions? Wriet yes or no. -5x > 0 x > 0 Solve each inequality and ch eck your solution. 9x > 81 help please? -thanks

**government**

what is Third way urbanism?

**philosophy**

What makes pity the such a horrible emotion? How is it counter to Nietzsche conception of the good? Please I dont know where to start!!!!!

**Philosophy**

What are the differences between phenomenal and noumenal worlds?

**Physics**

a) A microphone has an area of 5cm^2. It recieves during a 4.0 s time period a sound energy of 2.0*10^-11 J. What is the intensity of the sound? b) using intensity from a) what is the variation in pressure in the sound wave, delta P ? Use T=293 K and density of air=1.2kg/m^3

**Pre-Algebra**

Directions: Find the missing measure of each angle How do I do this? It's a triangle, angle one 2x + 15 x 45degrees

**French**

Au printemps.

**Pre-Algebra**

Please help me. Thanks It's Pythagorean Theorem: A boot leaves port and travels 18 miles north and 15 miles east. How far from port is the boat? I have drawn a picture, 15² + 18² = c² ²= squared. Thanks... meh please someone help mewith this, thanks.

**Pre-Algebra**

Thanks Reiny.

**Pre-Algebra**

I got 11 and 2/3rds, correct?

**Pre-Algebra**

A 9 foot ladder leans against a building at a point 7 feet above the ground. At what height would a 15 foot ladder touch the building if both ladders for the same angle with the ground? Propotion? But I just get a decimal...

**Pre-Algebra**

Nevermind, it says twice as long/wide.

**Pre-Algebra**

It says twice as wide, not four times..

**Pre-Algebra**

Would it be $800?

**Pre-Algebra**

Well, this problem is really stumping me, so here it is. Directions: In each problem, first draw a picture of the situation to the right of the problem. Then decide whether the problem involves measuring length or area growth to help you answer the questions. 1. It costs Mrs. ...

**life science**

how do fungi liv e without water and in extreme cold?

**how children learn**

which of the following questions ia a thinker/doer most likely to ask?

**skills for the effective teacher aide**

Acc to the SMCR model, problems in communication can arise when the speaker fails to do what?

**math,**

3/4 is= to something over 12

**math**

Theres 26 black cards in a deck of cards. Half of the deck of cards will remain red/black. 1/2 of the cards are shown as black cards.

**math**

Well, there is 52 cards, and there is only 4 aces, aswell as 9's. What is the probability that you will get those cards?

**Pre-Algebra**

Well, sorry -.- Thanks for the answer, lol. I thought it would be 28.

**Pre-Algebra**

Can I have someone check this please? I wouldn't want to do the whole page, then find out I had done them all wrong. :( [Percents of Change] A $100 digital watch is now $72 Decrease, 72/100 = negative percent. 100/72.00 = .72 .72 - 1 = 30%? Thanks. 30% is my final answer, ...

**math213**

Chocolate + singles Chocolate + doubles Chocolate + triples Vanilla + singles Vanilla + doubles Vanilla + triples Strawberry + singles Strawberry + doubles Strawberry + triples There are a total of how many different ways? 3+3+3=? Find it, and thats your final answer.

**math**

Are you needing to reduce this fraction? Divide?

**writing**

Please tell us what you need help on.

**eng**

Use your imagination, :) Education can help succeed you in life, by making new friends, getting a job (career) in life. You need education to survive in life. College is the main thing about education, it's about what you've learned from the years you have been educated.

**Pre-Algebra**

Could you explain why I got that one wrong? Also, 66 1/2% of $24.00, how do I do these problems? :\ Thanks, by the way for checking them :)

**Pre-Algebra**

Is this correct? If I'm mistaken, please correct it for me, and show me how. Thanks. [Fractions, Decimals, and Percents.] 33 & 1/3 of $90 = $21.00 100% of 500 = $500 1% of 500 = $5.00 50% of 70 = $35.00 100% of 70 = $70.00 Thanks, you don't have to tell me all of then,...

**Pre-Algebra**

I don't know how to do these problems. 33 and 1/3% of $90 66 and 2/3% of $90 199% of 70

****Help ****

Anyone can help you here.

**Physics**

The figure below shows a standard man intending to do reverse curls in a gym (standing up with Tension up, weight of arm down and force down). He holds his arms straight, using an overhand grip to hold the bar. If the mass of the bar is given as 146 kg, what is the tension in ...

**biology**

In geometry a double helix (plural helices) typically consists of two congruent helices with the same axis, differing by a translation along the axis, which may or may not be half-way. "wikipedia"

**MATHS**

c stands for cents?

**MATHS**

What grade are you in?

**MATHS**

Are you in algebra using variables 'c'?

**C Programming**

This is a homework helping site, we can't help you with your programming issues, I believe, discuss that with the founder of that program. I would help you with this, but Its too tiring. (coding) float temp, CtoF, FtoC; char choic; char choice; char answer[10]; char answer...

**pre-algebra**

11-14=b 15-6=b 6-15=b. Do the problems, :)

**Algebra 1**

You'll use the fourth quadrant, count to six on the X Axis and then count to -6 on the Y Axis. Plot your point.

**7th grade Pre-Algebra**

Please help me, :|