Tuesday

July 22, 2014

July 22, 2014

Total # Posts: 70,520

**Physics**

hi

**geometry**

The shape is a hexagon. It would be a pentagon if it had 5 sides, but it has 6 sides instead, so it has to be a hexagon.

**chemistry**

1)A sample of CO2 gas which weighs 0.85 grams has a volume of 1.30 liters when collected at 30°C. What would be the pressure of the gas sample? 2) A gas sample has an original volume of 600 ml when collected at 720 mm and 35°C. If a change is made in the gas temperatur...

**physics 1**

Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.6 x 1028 kg and 1.5 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would...

**Physic**

A 135 g baseball traveling at a speed of 36 m/s hits a bat and moves back along its incoming trajectory with a speed of 47 m/s. a) What is the impulse delivered to the ball by the bat? (Answer: 11.2kg * m/s) b) If the duration of the bat-ball collision is 7 x 10^-4s, what is t...

**Science**

A?

**Science**

Which of the following would increase the magnetic field around a wire? A. solenoid B. insulator C. conductor D. resistor

**English help**

From the words below, supply the words needed to complete the sentences. Prodigious, Impartial, Profusion A. While the big money contributors had remained IMPARTIAL at the beginning of the campaign, when it narrowed down to the two chief contenders, a PRODIGIOUS amount of mone...

**Physics**

A charge q1 of -5.00*10^-9C and a charge q2 of -2.00*10^-9C are separated by a distance of 40.0cm. Find the equilibrium position for a third charge of 15.0*10^-9C

**English help**

Don't have any

**English help**

A music conductor is one who ________. To lead one in is to ________, and abduct is to ________. Chrono means "time" so to "synchronize" means to __________. Since phon means sound, symphony must be _______. If thesis means "idea", then synthesis ...

**Physic**

If a 35 g arrow moving at 160 km/h penetrates a block of wood suspended by a rope, what impulse is delivered to the block? (Answer: 1.56kg * m/s) What velocity will the wood block acquire if its mass is 7.0 kg? Ignore the mass of the arrow compared to that of the wood block. (...

**English**

1. violet: flower:: A. psychosis: illness B. pink: red C. shadow: sun D. chair table Is it A? 2. gems: jeweler:: A. gold: miser B. airplane: pilot C. driver: car D. clay: potter Is it B? 3. day: night:: A. few: many B. red: color C. fin: fish D. life: death Is it D?

**physics**

A small ball with a mass of 0.05 kg moves along a circular orbit with a radius of 0.9 m at a speed of 9.0 m/s. What is the angular momentum of the ball? If the angular momentum of this ball were quantized in the same manner as the angular momentum of electrons in the Bohr mode...

**physics**

) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the electron in its orbit?

**physics**

If a proton were traveling the same speed as electrons in a TV picture tube (about 7.2 107 m/s), what would its de Broglie wavelength be? The mass of a proton is 1.67 10-27 kg.

**physics**

In a typical electron microscope, the momentum of each electron is about 1.4 10-22 kg-m/s. What is the de Broglie wavelength of the electrons?

**physics**

Things around you are emitting infrared radiation that includes the wavelength 1.44 10-5 m. What is the energy of the photons?

**physics**

Gamma rays (γ-rays) are high-energy photons. In a certain nuclear reaction, a γ-ray of energy 0.306 MeV (million electronvolts) is produced. Compute the frequency of such a photon.

**Algebra**

There are 60 marbles in a bowl. Their colors are red, blue, and yellow. 1/3 of the marbles are yellow, 1/4 of the marbles are blue. How many red marbles are there in the bowl?

**Science**

How do gravitational and electrical forces act on a maglev train?

**calculus**

x(t)=3t^3-40.5t^2+162t find where object is speeding up or slowing down

**chemistry**

how many grams of CO2 are produced when 88 grams of O2 are reacted with an excess of butane?

**math**

A fish is swimming 18 centimeters beliw the surface of the stream which integer best describes the elevation

**Social Studies**

What were the jobs performed by the British when they were in India, back in 1858

**Social Studies**

What were the resources of India back in 1858?

**Science**

Can someone explain center of mass in simple terms?

**English**

Neither I nor she will able to climb the tree. Neither I or she will able to climb the tree. Which sentence is right and why?

**social studies (check answers)--Mrs.Sue**

1. incorrect 3. I agree I don't know about 2.

**math**

Do you know how to find what they are asking (outlier, mean)?

**math**

Neither B or D is right.

**Algebra **

a cylindrical water tank has a volume of 20π cubic feet . the height of the tank is 1 foot more than 2 times of its radius . find the radius and height of the tank

**math**

An analysis of the ledger detail is required to differentiate owner's equity beginning balance from the amount of additional investments made during the period. True

**statistics**

The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test statistic to see whether the...

**managerial accounting **

what is nile's strategy for success in the marketplace ?

**rela**

elizabethan social classes and the roles each played in elizabethan england

**writting**

One of the cups are missing

**Chemistry**

Starting with 0.290mol SbCl3 and 0.150mol Cl2 , how many moles of SbCl5 , SbCl3 , and Cl2 are present when equilibrium is established at 248∘C in a 2.50−L flask? SbCl5(g)⇌SbCl3(g)+Cl2(g) KC=2.5×10−2at248∘C

**physics**

How fast does water flow from a hole at the bottom of a very wide, 7.8m deep storage tank filled with water? Ignore viscosity.

**math**

7/10 got to the pool by car, 1/5 took the bus, and 1/6 walked. how many more came by car than on foot? How many fewer came by foot?

**Physics**

234

**Math**

Which situation could you graph without connecting the points? the height of a hot-air balloon as it climbs the amount of electricity used by a refrigerator over time<---- the distance you are from home as you ride your bicycle to a city pool the amount of money in a cash d...

**math**

djndf

**science**

If and iron block had a lenght of 2 cm, a width of 3 cm, and a height of 1 cm and a mass of 33 g between what two liquids would it float?

**English**

What kind of dash/hyphen am I supposed to use in a title like this? Hammurabi - a Person of One of the World's Oldest Civilizations

**calculus help**

Suppose that f'(x)= (2x^2-5x-12)/(3x^2-7x+2) and that f(x) is continuous for all real numbers x. a) Do a sign diagram to list the values of x where f(x) has local maximums and local minimums. In addition, list the intervals where f(x) is increasing and decreasing. b) Draw ...

**Math**

A person wants to establish an annuity for retirement purposes. He wants to make quarterly deposits for 20 years so that he can then make quarterly withdrawals of $5,000 for 10 years. The annuity earns 7.32% interest compounded quarterly. A. How much will have to be in the acc...

**Math**

no spaces 1 space 2 spaces

**Math**

no spaces 1 space

**Math**

one space two spaces 3 spaces

**Math **

Starting on her 21st birthday and continuing on every birthday up to and including her 65th, Jessie deposits $2,000 a year into an IRA. How much (to the nearest tenth) will be in the account on Jessie's 65th birthday if the account earns: A. 7% compounded annually? B. or 1...

**Science**

Nevermind. I just need cell wall.

**Science**

Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondria: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

**Math**

You want to purchase an automobile for $21,600. The dealer offers you 0% financing for 48 months or a $3,000 rebate. You can obtain 4.8% financing for 48 months at the local bank. Which option should you choose and why? (you would use the banks option to pay the rest after reb...

**Math**

The population of some countries has a relative growth rate of 2.75% per year. At this rate, how many years (to the nearest tenth of a year) will it take the population to double?

**Probability**

1. H

**Pre Chem**

A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?

**Probability**

(x1 + x2 +...+ xn) / n

**Probability**

1. -> 0.000 2. -> 1.000 3. -> 0.383

**Science**

Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondira: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

**Social Studies**

2. Pretend you're a follower of Gandhi is India under British rule. Express your desire for home rule. (Your writing must be two paragraphs.) What could I include?

**Astronomy**

Probably true

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

Memo Editing (This is what I have so far) Today, Rite Properties needs to send a memo to the residents of The Plaza, an apartment complex they own. Review the memo thoroughly, then edit it for writing style (cohesion, concision, clarity, diction, and variety) AND professional ...

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

Memo Edit Today, Rite Properties needs to send a memo to the residents of The Plaza, an apartment complex they own. Review the memo thoroughly, then edit it for writing style (cohesion, concision, clarity, diction, and variety) AND professional tone and voice. (Think about the...

**English **

What would be 3 good guide questions for The Bermuda Triangle? 1. Where do people disappear in the triangle? 2. 3.

**Science**

Oh..

**Science**

How many cell divisions would it take to produce at least 1,000 cells from one cell? (When one cell splits in half during cell division, the result is two new cells. Each of those cells can divide into two more and so on.) Answer (256?)

**HISTORY**

With respect to Australia's aboriginal peoples, animistic religious beliefs are characterized by _______ worship.

**trigonometry**

3 sin theta = 1.5 when 0 is less than or equal to theta is less than or equal to 4 radians

**physics**

Use the diagram below. Click to view larger size. Taking right to be positive, the speaker is moving at a velocity of 27 \frac{m}{s} while emitting a sound of frequency 1094 Hz. If the temperature of the air is ^oF, what will be the frequency that you hear? f =

**physics**

Two speakers emit sounds, the one with an intensity of 3.19 x 10^{7} \frac{W}{m^2} and the other 8.64 x 10^{8} \frac{W}{m^2}. What is the difference in their intensity level? \Delta \beta =

**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? ...

**Precalculus**

Sin - cos = - radical 2 I don't understand this. It wants you to make the right side equal to zero and solve

**math**

Question 12.12. Katie had an unpaid balance of $1,734.50 on her credit card statement at the beginning of January. She made a payment of $165.00 during the month. If the interest rate on Katie's credit card was 7% per month on the unpaid balance, find the finance charge an...

**COM 200**

All of the following are accurate tips for effective listening EXCEPT: (Points : 1) Listen to what the speaker doesn’t say as much as you listen to what is said. Paraphrase what you understand the speaker’s message is to help ensure understanding. Don’t forget ...

**SS**

I think so, because there are discussions going on in many places around the world about the governmental structure of Cyprus.

**SS**

I honestly have no idea. I guess they will improve?

**SS**

What might happen in Cyprus in the future, politically and economically?

**French**

The word "vendeur" means seller in French.

**French**

travaille dans un magasin---> works in a store

**SS**

How does Iran spend its money?

**Probability**

E[X^2] = 97

**Probability**

P(Θ=0∣X1=0.5)= 0.9 P(Θ=1∣X1=0.5)= 0.1

**Probability**

E[Xi]= 0.05 var(Xi)= 0.0475

**Probability**

c = 2

**Probability**

The line was supposed to be fX(x)=c/x^3 if x≥1, 0,otherwise.

**calculus**

u have 7 different pass codes from a choice of 8 numbers how many possible outcomes are there

**physics**

A 150-g block on the end of a spring with a spring constant of 35 N/m is pulled aside 25 cm and released from rest. In the electrical analog the maximum charge on the capacitor is 0.25 C.The maximum current in the LC circuit is

**Social Studies**

Thanks for the help to both of you!

**Social Studies**

My book emphasizes the points that Kurds were treated harshly and that the use of the Kurdish language and culture was controlled in Turkey.

**Social Studies**

I'm sorry I posted this question again, but it was only to get a second opinion. The reason I think B is because Kurds never had their own country, so I don't think that the Kurds being included in Iraq was relevant.

**Social Studies**

Which of the following facts could be best used when supporting Kurdish independence? A. Most of the Kurdish people are not Shia Muslims, but are Sunni Muslims. B. Outside governments have repressed Kurds harshly before. C. Kurds were included in Iraq by the British when Iraq ...

**Maths, biology, accounting, business economics**

What career could one study with these subjects

**statistics**

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 494 jawbreakers that weigh more than .4 ounces?

**Chemistry**

Yes, for increase in P there is a decrease in S.

**math**

Find the number of term s in the following arithmetic sequence. 3, 9, 15, 21... 123

**chemistry**

what is the concentration of phosphate in the original lake water sample if the unknown lake water sample

**Math**

An experiment involving learning in animals requires placing white mice and rabbits into separate, controlled environments, environment I and environment II. The maximum amount of time available in environment I is 500 minutes, and the maximum amour of time available in enviro...

**English Composition**

They want me to be older because since I'm a girl they think "things" could happen to me.

**English Composition**

What are some reasons that could persuade your parents to go to places alone with just your friends.

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