Sunday

December 21, 2014

December 21, 2014

**Recent Homework Questions About First Aid**

Post a New Question | Current Questions

**math**

how can i plot values in a parabola graph if the values are fractions. it's my first time with this things so i don't understand
*Saturday, May 3, 2014 at 10:49am*

**physics**

Two inelastic balls of masses 2 and 3 kg are moving at the velocities 8 and 4 m/s. Find the increase of the internal energy if the first ball catches up the second one.
*Saturday, May 3, 2014 at 7:39am*

**business**

Within an organization, the first step in human resources planning is?
*Saturday, May 3, 2014 at 12:04am*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Friday, May 2, 2014 at 7:09pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Friday, May 2, 2014 at 6:21pm*

**Fitness And Nurition**

Greetings! I did my homework, but I don't know if my answers are right or not. I wanted to know if you can help. My answers will be with a * beside it. 1. Which one of the following choices is a mental symptom of distress? A. Memory loss B. High self-esteem C. ...
*Friday, May 2, 2014 at 5:54pm*

**chemistry**

Construct a galvanic (voltaic) cell from the half reactions shown below. Au3+ + 3 e- → Au (s) ξo= 1.420 V Br2 (l) + 2 e-→ 2 Br- (aq) ξo= 1.087 V Calculate the equilibrium constant (K) for this cell. Assume that the temperature is 298K. First, consider ...
*Friday, May 2, 2014 at 4:46pm*

**math 1 question pls help asap!!!**

Find the first four terms of the sequence represented by the expression. 3n + 5 (1 point) 5, 8, 11, 14 8, 11, 14, 17*** 3, 6, 9, 12 0, 8, 11, 14
*Friday, May 2, 2014 at 4:12pm*

**math**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 *** The sequence is neither geometric nor arithmetic. 2. –4, 8, –16, 32...
*Friday, May 2, 2014 at 3:36pm*

**math 1 question pls help!!!**

6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability...
*Friday, May 2, 2014 at 2:16pm*

**History**

The First Amendment right to freedom of religion was central in deciding the outcome to what trials?
*Friday, May 2, 2014 at 11:34am*

**Physics/Calculus**

It takes a force of 21,714lb to compress a coil spring assembly on a New York City Transit Authority subway car from its height of 8in to its fully compressed height of 5in. A. What is the assemblys force constant? B. How much work does it take to compress the assembly the ...
*Friday, May 2, 2014 at 9:43am*

**Calculus**

An electric elevator cable with a motor at the top has a multistrand cable weighing 4.5lb/ft. When the car is at the first floor, 180ft of cable are pulled out, and effectively 0ft are out when the car is at the top floor. How much work does the motor do just lifting the cable...
*Friday, May 2, 2014 at 9:41am*

**College Algebra & Trigonometry**

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight is pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=2cos(5ðt+ð/3). Find the first two times for which the ...
*Friday, May 2, 2014 at 4:03am*

**History8**

In Westside Community Schools v. Mergens, the Supreme Court ruled in favor of the __________, stating that it was a violation of __________. A.principal . . . church and state B.students . . . their First Amendment rights C.students . . . their patriotic rights D.principal...
*Thursday, May 1, 2014 at 6:11pm*

**Asap science check my answer plz?!**

Fill in the Blank: 14. The energy role of the first organism in a food chain is always a(n) ___________. A: Producer 15. Water is a(n) __________ factor in all ecosystems that all living things require. A: Abiotic 16. ___________bacteria carry out the conversion of gaseous ...
*Thursday, May 1, 2014 at 5:46pm*

**Survey Math help**

A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Would I do specific ages the first 100 randomly picked ...
*Thursday, May 1, 2014 at 2:44pm*

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*Thursday, May 1, 2014 at 11:44am*

**Help Ms.Sue!!! Social Studies**

1. How does the Israeli-Palestinian conflict most directly affect the daily lives of young people in Jerusalem a. civilian violence b. peace talks c. international negotiations d. political parties ( my answer) 2. which is the best location for farming? a. east of the jordan ...
*Thursday, May 1, 2014 at 10:56am*

**College Algebra and Trigonometry **

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches...
*Wednesday, April 30, 2014 at 11:40pm*

**accounting**

Meranda Corporation purchases a machine for $125,000. It has an estimated salvage value of $10,000 an is expected to produce 50,000 units in its lifetime. During the first year of operation, it produced 14,500 units. To the nearest dollar, the depreciation for the first year ...
*Wednesday, April 30, 2014 at 11:06pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Wednesday, April 30, 2014 at 9:20pm*

**math (3)**

Evaluate the first partial derivatives of the function at the given point.(0,e) f(x,y) = 6e^x ln(y) fx(0,e) = ? fy(0,e) = ?
*Wednesday, April 30, 2014 at 8:29pm*

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*Wednesday, April 30, 2014 at 8:24pm*

**Constituion: Check? Thanks**

After 1788, states had no control over a.local government and education. b.the chartering of corporations. c.the development and administration of civil and criminal law. d.issuing legal currency. c? In Congress’s first session after the ratification of the Constitution, ...
*Wednesday, April 30, 2014 at 6:34pm*

**Probability**

For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
*Wednesday, April 30, 2014 at 5:12pm*

**Algebra 1/2**

The spinner is spun twice. What is the probability it will stop on either 3 or 5 the first time and will stop on 2 the second time?
*Wednesday, April 30, 2014 at 4:50pm*

**statistics**

For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
*Wednesday, April 30, 2014 at 3:51pm*

**Probabitilty**

For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
*Wednesday, April 30, 2014 at 2:59pm*

**Chemistry**

Balance the redox equation. It occurs in acid solution. Sn(s) + H+(aq) = Sn2+(aq) + H2(g) I understand that first the equation needs to be put into halves. Sn(s) = Sn2+(aq) and H+(aq) = H2(g) Then, Sn(s) = Sn2+(aq) + 2e- and ? From here I am lost. Please help.
*Wednesday, April 30, 2014 at 2:54pm*

**Probability**

Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each one's lifetime as exponentially distributed with the same parameter λ. The lifetimes of the two laptops are independent. One of the laptops ...
*Wednesday, April 30, 2014 at 4:20am*

**Probability**

Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4, and the ...
*Wednesday, April 30, 2014 at 4:19am*

**College Algebra and Trigonometry**

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches.
*Wednesday, April 30, 2014 at 4:13am*

***math (7)**

Evaluate the first partial derivatives of the function at the given point. f(x, y) = x^2 + xy + y^2 + 2x - y ; at (-5, 4) fx(-5, 4) = ? fy(-5, 4) = ?
*Tuesday, April 29, 2014 at 11:52pm*

**Math**

There are 3,000 people at a concert. You survey a random sample of 200 people and find that for 35 of them this is the first concert they have ever attended. Estimate how many people are attending their first concert that night.
*Tuesday, April 29, 2014 at 11:16pm*

**Astronomy**

Choose one answer for each question How old is the universe? 6,000 years old 380,000 years old 13.8 billion years old 13.8 million years old A parsec is: Longer than a light year The distance between the Earth and the Sun Approximately 3x10^24 cm None of the above The distance...
*Tuesday, April 29, 2014 at 7:57pm*

**Probability**

Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4 , and the ...
*Tuesday, April 29, 2014 at 7:27pm*

**probability**

Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each one's lifetime as exponentially distributed with the same parameter λ. The lifetimes of the two laptops are independent. One of the laptops ...
*Tuesday, April 29, 2014 at 5:52pm*

**probability**

Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4, and the ...
*Tuesday, April 29, 2014 at 5:50pm*

**Calculus**

How do you find the first and second derivative of the following function? P(t)=20/(1+3e^-0.02t)
*Monday, April 28, 2014 at 10:58pm*

**A.P English**

Would the use of the phrase "wore her out" regarding a certain character throughout the first 100 or so pages of the book count as parallelism?
*Monday, April 28, 2014 at 7:53pm*

**physics**

Your vertical spring accelerometer has a 40 g mass hanging from it. You climb aboard the roller coaster that starts at rest and watch the accelerometer read 0.45 for 5 seconds while descending the first peak and then change to 2.8 for 2.5 seconds while going through the bottom...
*Monday, April 28, 2014 at 5:32pm*

**Engineering Physics**

which of the following is equal to the angular acceleration of a disk? a)first time derivative of angular position b) second time derivative of angular position
*Monday, April 28, 2014 at 5:47am*

**computer literacy **

1. Which of the following options would return a true statement for the sentence: The sky is bluest early in the morning. (A) Sky and blue Sky not morning Sky or dark Sky and evening 2. Famed science fiction writer H. G. Wells once envisioned something to store vast amounts of...
*Sunday, April 27, 2014 at 8:27pm*

**Scoiolgy**

Mattie is a new sociology professor at the local college. During her first lecture, she noticed that some students were yawning. Based on her interpretation of the students yawning, Mattie has decided she is a boring teacher. This is an example of the process referred to as: A...
*Sunday, April 27, 2014 at 6:52pm*

**Science help **

14. The energy role of the first organism in a food chain is always a(n) ___________. (1 point) 15. Water is a(n) __________ factor in all ecosystems that all living things require. (1 point) 16. ___________bacteria carry out the conversion of gaseous nitrogen to a ...
*Sunday, April 27, 2014 at 3:35pm*

**Algebra 1**

Can you please check my work and help me with the parts that I don't understand? For each event, choose the most appropriate term and solve the problem. 1. In a sweepstakes with nine hundred entries, the first winner selected receives the grand prize, the second receives ...
*Sunday, April 27, 2014 at 1:59pm*

**math**

Steve earned scores of 96 and 87 on his first two exams. What will his average grade be if he gets a 72 on his third exam?
*Sunday, April 27, 2014 at 7:22am*

**CALCULUS**

two birds are flying along in 3-space. At time t, the first bird is at the point (x,y,z) on the line
*Sunday, April 27, 2014 at 2:33am*

**Physics**

A 1900 kg Oldsmobile traveling south on Abbott Road at 13.6 m/s is unable to stop on the ice covered intersection for a red light at Saginaw Street. The car collides with a 3854 kg truck hauling animal feed east on Saginaw at 9.8 m/s. The two vehicles remain locked together ...
*Saturday, April 26, 2014 at 11:04pm*

**Chemistry URGENT**

A student heated a hydrated salt sample with an initial mass of 4.8702 g, After the first heating, the mass had decreased to 3.0662 g (two part question) 1. if the sample was heated to constant weight after reheating, what is the minimum mass that the sample can have after the...
*Saturday, April 26, 2014 at 5:23pm*

**math**

RM65000 will be invested for 6 years 9 months. if the investment will be offered 5% compounded semi annualy for the first 2 years, 6% compounded monthly for the next 18 months and 7% compounded daily for the rest of the period ,find the future value of this investment. what is...
*Friday, April 25, 2014 at 11:18pm*

**Calculus Please Help4**

Consider the area between the graphs x+2y=9 and x+6=y^2. This area can be computed in two different ways using integrals First of all it can be computed as a sum of two integrals as integral f(x)dx from a,b + integral g(x)dx from b,c I got a=-6 b=3 c=19 but what does f(x)=? g(...
*Friday, April 25, 2014 at 8:27pm*

**MATH STATS URGENT**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*Friday, April 25, 2014 at 3:38pm*

**Physics**

Light of wavelength 630 nm is incident on a long, narrow slit. a)Determine the angular deflection of the first diffraction minimum if the slit width is 0.020 mm. b)Determine the angular deflection of the first diffraction minimum if the slit width is 0.20 mm. c)Determine the ...
*Friday, April 25, 2014 at 1:33pm*

**Chemistry URGENT**

I am not good with math problems. I need help with these two problems. I'm not sure what equations to use. please help. A student heated a hydrated salt sample with an initial mass of 4.9702 g. After the first heating, the mass had decreased to 3.0662g. 1. if the sample ...
*Thursday, April 24, 2014 at 11:36pm*

**math**

RM65000 will be invested for 6 years 9 months. if the investment will be offered 5% compounded semi annualy for the first 2 years, 6% compounded monthly for the next 18 months and 7% compounded daily for the rest of the period ,find the future value of this investment. what is...
*Thursday, April 24, 2014 at 11:33pm*

**MATH STATS URGENT**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*Thursday, April 24, 2014 at 11:29pm*

**Math**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*Thursday, April 24, 2014 at 9:40pm*

**Math**

A marble is drawn from a bag containing four white, three red, and two blue marbles. Without replacing the first marble, a second marble is drawn. a. Draw a two stage outcome tree for this experiment. b. Turn the outcome tree into a probability tree diagram by labeling all of ...
*Thursday, April 24, 2014 at 9:06pm*

**Math **

1) When a pendulum 0.5m long swings back and forth, its angular displacement Ɵ from rest position, in radians is given by Ɵ=1/4sin((pi/2)t), where t is the time, in seconds. At what time(s) during the first 4 s is the pendulum displaced 1 cm vertically above its rest...
*Thursday, April 24, 2014 at 8:46pm*

**math**

Five athletes are chosen to represent their sports at the school pep rally. Two girls and three boys are selected to walk into the gymnasium. If a girl must enter first and the other girl must be the last one to enter, how many different ways can the athletes enter the gym?
*Thursday, April 24, 2014 at 7:01pm*

**science **

1. The image above shows the Andes Mountains. Which of the following processes formed this feature? (1 point) (pic of Andes Mountains) Glaciers deposited sediment. Plates converged together to form the mountains. Plates pulled apart and released magma. Sand dunes hardened and ...
*Thursday, April 24, 2014 at 3:58pm*

**Social Studies**

Can somebody please check my answers? Thank you :) 1. Which is a key factor that affects the climate of mountainous Latin America? a. snow b. El Niño c. elevation ** d. sea breezes 2. Which statement best describes the economies of Central America? a. Central America&#...
*Thursday, April 24, 2014 at 12:33pm*

**Math**

Mr. Fairfax ordered 3 large pizzas for a class party. Group A ate 6/6 ( that should look like a fraction) of the first pizza, and Group B ate 8/6 of the second pizza. Did Group A or B eat more pizza? Then later Group C ate all remaining slices of pizza. What fraction of the ...
*Thursday, April 24, 2014 at 11:16am*

**math**

RM65000 will be invested for 6 years 9 months. if the investment will be offered 5% compounded semi annualy for the first 2 years, 6% compounded monthly for the next 18 months and 7% compounded daily for the rest of the period ,find the future value of this investment. what is...
*Thursday, April 24, 2014 at 8:40am*

**Language Check**

Choosing verbs that agree in Number with Their Subjects: 1. Almost everybody (has,have) played games that originated in faraway places. MY ANSWER: HAVE 2. Few of these games (is,are) difficult to play. MY ANSWER: ARE 3. Pictures on ancient Greek pottery (show,shows) people ...
*Thursday, April 24, 2014 at 7:21am*

**Quantitative Methods**

1. Management of Sundown Rent-a-Car (see Problem 8-8) has decided that perhaps the cost during the six-month period is not the appropriate Cost to minimize because the agency may still be obligated to additional months on some leases after that time. For example, if Sundown ...
*Thursday, April 24, 2014 at 1:59am*

**math**

Wyatt earned $316.50 each week for the first 3 weeks of February and $425.25 the last week of February. How much money did Wyatt earn in all in February ?
*Wednesday, April 23, 2014 at 11:40pm*

**physics**

First start with an isothermal expansion at 2.0 atm from 1.0 L to 4.0 L. If this now is adiabatically compressed back to its original volume, what is the change in internal energy here? Also what are some examples of these processes
*Tuesday, April 22, 2014 at 10:30pm*

**math**

Marnie practiced her basketball dribbling. After two tries she had bounced the ball 88 times. On the second try she had 2 fewer bounces than 8 times the number of bounces she had on the first try.How many bounces did she have on the second Try
*Tuesday, April 22, 2014 at 8:48pm*

**Math **

Elisa has 50 invitations to distribute to her neighbors over three days. She distributes 12 on the first thing and, i, invitations on the second day. Which expression can best be use to find the number of invitations left to distribute on the third day
*Tuesday, April 22, 2014 at 6:34pm*

**reading**

a name i can use for the elizabethan time period first and last name
*Tuesday, April 22, 2014 at 6:18pm*

**Math**

The distance d1 in miles, a small plane is from its final destination is given by d(t) = 250 – 100t, where t is the time, in hours, remaining for the flight. Find and discuss the meaning of the intercepts of the graph of the function. (You must first solve and graph this...
*Tuesday, April 22, 2014 at 6:16pm*

**Algebra1**

Find the sum of the first 33 terms of the arithmetic sequence whose first term is 3 and whose 33rd term is -253.
*Tuesday, April 22, 2014 at 5:15pm*

**Chemistry pH**

What is the pH of 4.7 M CH3NH3Cl. mehyl-amine, CH3NH2, Kb = 4.4 × 10-4. Do I find Ka first then take the -log(Ka) to find the pH of 4.7M CH3NH3Cl? or do I need to make I.C.E. table?
*Tuesday, April 22, 2014 at 3:28pm*

**Physics 1**

A cart with mass 340 g moving on a frictionless linear air track at an initial speed of 1.5 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.42 m/s. (a) What is ...
*Tuesday, April 22, 2014 at 2:51pm*

**statistics**

We guess, based on historical data, that 30% of graduating high-school seniors in a large city will have completed a first-year calculus course. What's the minimum sample size needed to construct a 95% confidence interval for a proportion with a margin of error of 2.5%?
*Tuesday, April 22, 2014 at 11:56am*

**Networking**

firm is assigned the network part 128.171. It selects a 10-bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. (Hint: Use Windows Calculator.) b) Convert this answer into dotted decimal notation. c) Draw the bits for ...
*Tuesday, April 22, 2014 at 10:17am*

**math**

michael purchased a certain number of one stock for a total of $176. the second stock was selling for $5 less per share. michael could have bough 5 more shares of the second stock for the same amount of money. how many shares of the first stock did michael purchase? how much ...
*Monday, April 21, 2014 at 10:10pm*

**Math (Number Theory)**

the following two lines indicate another way to derive the formula for the sum of the first n integers by rearranging the terms in the sum. Fill in the details. 1+2+3+...+n=(1+n)+(2+(n-1))+(3+(n-2))+... =(1+n)+(1+n)+(1+n)+...
*Monday, April 21, 2014 at 9:01pm*

**SS - PLLLSSSSS HELP ASAP (check my work)!!!!!!!!!!**

1. The admission of Missouri as a slave state was controversial in the Senate because the Senate was pro-slavery. it would create sectionalism. it would upset the balance.*** the Senate was anti-slavery. 2. The main topic of the Lincoln-Douglas debates was Western territories...
*Monday, April 21, 2014 at 5:29pm*

**social studies (check answers)**

1.B 2.D 3.B 4.C 5.D 11.What contribution did Simón Bolivar and José de San Martín make to the history of the region? A. They served as prominent criollo leaders. B. They led the revolutions for independence. C. They instituted the first republican ...
*Monday, April 21, 2014 at 4:31pm*

**math**

the first three terms of a GP are the first, fourth and tenth terms of an AP. given that the first term is 6 and that all the terms of a GP are different, find the common ratio.
*Monday, April 21, 2014 at 4:27pm*

**social studies**

1. The admission of Missouri as a slave state was controversial in the Senate because the Senate was pro-slavery. it would create sectionalism. it would upset the balance.*** the Senate was anti-slavery. 2. The main topic of the Lincoln-Douglas debates was Western territories...
*Monday, April 21, 2014 at 4:19pm*

**social studies (check answers)**

1.B 2.D 3.B 4.C 5.D 11.What contribution did Simón Bolivar and José de San Martín make to the history of the region? A. They served as prominent criollo leaders. B. They led the revolutions for independence. C. They instituted the first republican ...
*Monday, April 21, 2014 at 1:22pm*

**physics**

Two speakers are both emitting sounds, the first with an intensity level of 1 x 10^{-11} \frac{W}{m^2} and the second with an intensity of 1 x 10^{-8} \frac{W}{m^2}. What is the db level of the first? \beta = What is the difference in the decibel (db) level of the two sounds...
*Monday, April 21, 2014 at 2:57am*

**English Help Please!!! Check!!**

Concision Rewrite the sentences using concision techniques (replacing phrases with words, combining sentences, etc.) discussed in class to simply these wordy sentences. 1. Critics cannot avoid employing complex and abstract technical terms if they are to successfully analyze ...
*Sunday, April 20, 2014 at 11:27pm*

**us history **

Can you check if my answers are correct? When Jewish leaders proclaimed the independent state of Israel in 1948, the USA A. refused to recognize it until democratic elections were held B. broke diplomatic relations with most Arab states C. recognized the new state immediately ...
*Sunday, April 20, 2014 at 8:58pm*

**Physics waves**

I am stuck with both of these questions. Thanks in advanced! 1. If one tone has a frequency of 110 Hz and another tone is played near it with a tone of 113 Hz, the beat frequency is ___ Hz 2. A standing wave has 3 nodes in a string 20 m long. The wavelength of this wave is __ ...
*Sunday, April 20, 2014 at 7:16pm*

**Physics waves- check answers please**

1. If a bat emits 10 sounds in 5 seconds, what is the frequency of the bat's vocal outbursts (rounded to first decimal place) My answer: 2.0 Hz 2.If one crest has a 3 cm amplitude and interacts with another pulse to produce a crest 8 cm high this demonstration" a) ...
*Sunday, April 20, 2014 at 6:22pm*

**Probability**

Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be a noise term, another unknown random variable with mean 3 and variance 5. Assume that Θ and W are independent. We have two different ...
*Sunday, April 20, 2014 at 3:44pm*

**math**

RM65000 will be invested for 6 years 9 months. if the investment will be offered 5% compounded semi annualy for the first 2 years, 6% compounded monthly for the next 18 months and 7% compounded daily for the rest of the period ,find the future value of this investment.
*Sunday, April 20, 2014 at 11:04am*

**English Help Please!!!**

Cohesion and Coherency/Sentence Variety This short paragraph has two distinct problems. First, to improve cohesion, rewrite these sentences so that old information is at the beginning of each sentence. Second, combine sentences and/or provide transitions to improve the ...
*Sunday, April 20, 2014 at 12:51am*

**Math **

a 120 foot long rope is cut into 3 pieces. the first piece of rope is twice as long as long as the second piece of rope. the third piece of rope id 3 times as long as the second piece of rope. what is the length of the longest piece of rope
*Saturday, April 19, 2014 at 3:48pm*

**chemistry first year**

20L of N2 and 100 L of H2 are reacted to produce NH3 what is the decrease in the V of the mixture N2+3H2--> 2NH3 Ans me with reason
*Saturday, April 19, 2014 at 6:14am*

**chemistry first yera**

A 0.4 g sample of monobasic acid requires 16cm3 of 0.1 mol per dm3 of NaOH for complete neutralization . what is the relative mass of the acid?? Plz ans me urgent
*Saturday, April 19, 2014 at 6:09am*

**Physics **

1) Determine the extension of the trampoline when a 200 kg person stands on the trampoline. (k=12000) 2) If on the first push, the trampoline went 8.0 cm below its position in part 1, find the average force exerted by his leg muscles? For the first question i was able to get 0...
*Friday, April 18, 2014 at 10:11pm*

**statistics**

a box contain five silp of paper marked 1,2,3,4and5 tow silp are selected without replacement,list the possible vaule for each of following random variable the sum of two number on two silp the difference between the first and second number
*Friday, April 18, 2014 at 9:17am*

**cost accounting**

Marvin’s Motors Company (MMC) manufactures outboard motors for use on small to medium sized boats. MMC produces three models: the Standard, the Deluxe and the Performance. The company uses a normal job costing system with manufacturing overhead applied on the basis of ...
*Friday, April 18, 2014 at 8:18am*

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