Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 3,940

**AP Chem**

A weak acid (HA) is found to ionize 16.2% when mixed at a concentration of 0.21 mol/L. What is the value of Ka for this acid?

**physic**

w= (correct unit)

**physic**

Calculate the mass (in SI units) of a 150 lb human being. m= (correct unit) Calculate the weight (in English units of a 2000 kg rhinoceros.

**physics**

A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are 1.31 m above the ground. How much work is done on the ball by its weight?

**physics**

By what factor is the kinetic energy increased when the speed of a car is increased from 21 km/h to 98 km/h?

**Math**

Is the sum of the measure of all the angles that come together in the center of a circle the same for every circle

**math**

you deposit $2200 in an account that pays 3% annual interest. after 15 years, you withdraw the money. what is the balance if the interest is compounded continuously?

**Mixed numbers and improper fractions**

What's the improper fraction of 4 24/5

**anatomy**

name the structures that can be seen in elastic cartilage?

**a & p**

what are the structures that can be seen in elastic cartilage?

**History**

What geographical features have affected Russia's climate, and how have they affected it?

**math**

Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 100.01 PRO, 100.1 BLU, 010.1 ABR, 004.15 KWA B. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU C. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO D. 004.15 KWA, 010.1 ABR, 100.01 PRO, 100.1 BLU

**physics**

i did the graph already and i put the anwser 7.5m/s^2 and i got it wrong

**Class**

Which steps address the "issue" and which address the "problem"?

**science**

They look different because the cells need time to grow. If one divides a lot, it will probably be smaller than one that has the time to grow

**Physics**

22.1

**books**

stephen crane washington irving henry james theodore dreiser bret harte mary e.wilkins freeman mark twain jack london kate chopin sarah orne jewett herman melville what is the literary style for each author Realism regionalism or Naturalism romanticism

**Poetry**

Can you help me analysis the meaning of The jumblies poem

**psycholoy**

which of the folloing characteresitcs will not reduce negative stereotyping in a contact situation? I think the answer is b. is that correct? thank you

**math**

for (e) is the answer correct if i get a decimal number like 8.5?

**math**

How do I figure this: A lunch bill is unknown. J has $8.00; not enough for the total bill. H. pays 3/5 of the bill. How much does H. pay? What's the total bill?

**math**

is 7pi/6 an irrational number?

**physics**

A 45-kg penguin slides off the edge of an ice shelf and hits the water 1.7 s later. What is the magnitude of the gravitational impulse on the penguin during its fall?

**Physics**

isn't that wrong because of the units? you would have to convert 145 mi to 765,600 ft. then divide by 2 (because its 2 ft/s) and get 382,800. then subtract 2 ft/s to get the change, so 382,798. is that right or did i do something wrong?

**BUSS/STATS**

A a

**calculus**

If a function f is continuous for all x and if f has a relative minimum at (-1,4) and a relative minimum at (-3,2), which of the following statements must be true? (a) The graph of f has a point of inflection somewhere between x = -1 and x=3 (b) f'(-1) = 0 (c) The graph of...

**psychology**

when physical energy has resulted in aresponse in a sense organ, it is clear that

**psychology**

neutransmitters released by the vesicles in the terminal buttons complete communication between neurons by their action in the

**ENGLISH**

what is the frictional world just describe that ONLY

**ENGLISH **

SCORE BY PHYLLIS GOTLIEB IN TWO PARAGRAPH DESCRIBE THE FICTIONAL WORLD CREATED IN SCORE

**Statistics Question**

Consumer Reports rated airlines and found that 80% of flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on-time rate is representive of the entire commercial airline industry, consider a random sample of 200...

**english**

In our courts of law, 12 members of a jury (decides,decide) a defendant's gulilt or innocence.

**Stats**

Consumer Reports rated airlines and found that 80% of flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on-time rate is representive of the entire commercial airline industry, consider a random sample of 200...

**Chemistry**

How many oxygen atoms are represented in the formula Fe2(SO4)3?

**Algebra 1**

How do you do slope intercept form y=mx+b

**math word problem**

Suzzanne wants to build a fence around her square garden . The garden measures 7 feet on each side . How much fencing material does she need?

**Chemistry **

How many grams of chlorine are needed to make 5.00 X 10^6 g of a solution that is 1.50 ppm chlorine by mass?

**English Essay Topic**

Thank you Writeacher and Ms. Sue!! <3

**English Essay Topic**

I am stuck! I don't know what topic to write about for my research paper! I want to write about something modern and recent but I don't know what! I have been looking through sites but nothing seems to stick out! Can you give me any suggestions?

**acc**

Which of the following is a true statement about manual and electronic accounting systems?

**Chemistry**

A decomposition reaction has a rate constant of 0.0019 yr -1. ( a) What is the half-life of the reaction? ______ yr (b) How long does it take for [reactant] to reach 12.5% of its original value? ______ yr

**Physics**

1.Two balls, each with a mass of 0.871 kg, exert a gravitational force of 8.23 × 10−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10−11 Nm2/kg2. Answer in units of m I got .785 which is cor...

**Physics**

The planet Krypton has a mass of 7.1 × 1023 kg and radius of 3.3 × 106 m. What is the acceleration of an object in free fall near the surface of Krypton? The gravita- tional constant is 6.6726 × 10−11 N · m2/kg2. Answer in units of m/s2

**Physics**

A satellite moves in a circular orbit around the Earth at a speed of 6.3 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 gravitati...

**calculus**

A spring exerts a force of 4x lbs when it is compressed a distance of x feet. How much work is required to compress the spring a distance of one inch?

**research & Evaluation II**

The F test is used to compare the variances of two samples

**Great Expectations by Charles Dickens**

I'm looking for a word that means "teaching" because I think Great Expectations is all about learning and adapting to all different kinds of experiences and changes; it also has a very interesting and entertaining story plot. I'm trying to create a collage, a...

**Great Expectations by Charles Dickens**

If you had to describe the classic novel, Great Expections, by Charles Dickens, in one word, what would you describe it as?

**math**

Emily surmises that the probability tht she will pass math or chemistry is .95, the probability of her passing math is .7, and the probability of passing both is .55. Find her estimate of the probability of passing chemistry?

**Pratical English**

1. Which one of the following sentences contains an incorrect usage of the singular possessive? A. Mary was dominant among Jesus' disciples. B. The alpha male is often the pack's leader. C. The north forty has always been my family's land. D. Icarus's fate was ...

**(English) War of the Worlds Book Question**

Martian cylinder and the Martian tripod are initially referred to by the narrator as a "Thing." Why do you think that the word "Thing" is capitalized in these references?

**Chemistry**

What is the strongest intermolecular force in a sample of butanoic acid, and why? H H H O . . . .. H .C .C. C .C .O.H . . . H H H Is this structure right?

**Algebra **

-(5x+5)-4+8x

**Algebra **

(x+2)-(x-2)-12x =??

**algebra**

-9-(12-3x)

**English/Writing**

sorry, I only know the second two. they are evolving they are succeeding

**Calculus**

this homework is due in one hour and i have no idea how to answer these questions. 1. A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 20 ft/s^2. What is the distance covered before the car comes to a stop? 2. A stone is dro...

**physics**

What force must be applied to push a carton weighing 220 N up a 20° incline, if the coefficient of kinetic friction is 0.39? Assume the force is applied parallel to the incline and the velocity is constant

**accounting**

How do you journalize theses transactions? 8) Purchased $15000 food to sell; paid 1/3 in cash and the balance on account 10) Paid $30000 for a one-year insurance policy effective October 1, 2011 12) Purchased supplies for $2400 on account.

**science**

Earthquakes occur because of _____. plate tectonics cracks in the crust landslides volcanoes

**Algebra**

Use the FOIL method to find the product (3x^2-5)(x^5-9)

**geometry**

One right triangle has legs 18cm and 14cm. Another right trangle has legs 14cm and 24 cm. What is the ratio of the areas of these two triangles?

**Physics**

530 m

**english**

conversation between two friends on school of 2050 how it would be compared to present one

**statistics**

hey

**english**

Thank you for you help. Sam

**english**

Please can you give me some feedback and any advice on how to improve my argument essay on the topic "Zoos are important places" Also if you have any further ideas I could include. Many thanks for you help. By 2050, 30% of the world’s wildlife will have disappea...

**Chem**

Arrange these elements P, Mg, N, Br, K in increasing metallic character

**statistics**

A rocket fuel is to contain percent X of a particular chemical. The specification limits for X are 30 to 35%. The manufacturer will make a profit Q(x) on fuel per gallon as follows. Q(x)= 10 cents if 30<=x<=35 5 cents if 35<x<40 or 25<x<30 -10 cents otherwise...

**research & Evaluation I**

I have a car that has gone 50,000 miles, on average without a breakdown. What is the chance, in the next 5000 miles I have a breakdown?

**research & Evaluation**

The housing market in my area has seen a 12% trend downward in the average price. Further, the time to closing appears to have taken more time as compared to 3 years ago. Here are the values for the average time to close for the houses in the area. Mean = 22.3 weeks Std deviat...

**research & Evaluation**

I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance that Magneto A OR Magneto B wi...

**statistics**

I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance that Magneto A OR Magneto B wi...

**english**

what is SCS,SCV?

**geometry**

anthony is building a picnic table for his patio. he cut one of the legs at an angle of 40 degrees. at what angle should he cut the other end to ensure that the top of the table is parallel to the ground?

**math**

how many gallons would be left after 10 seconds?

**Calculus optimization problem**

A rectangular dog run is to contain 864 ft ^2. a. If the dog's owner must pay for fencing, what should be the dimensions of the run to minimize cost? b. Suppose a neighbor has agreed to let the owner use an already constructed fence for one side of the run. What should the...

**english**

how to write these questions into indirect questions? please 1-What other changes have there been in the last 100 years? 2-Do you think the quality of life in general is better now than it used to be?

**Biology**

Which of the following is not a benefit of genetic counseling: a.It helps identify parents at risk for having children with genetic defects. b.It assists parents in deciding whether or not to have children. c.It is based exclusively on family pedigrees. d.It helps identify inf...

**algebra**

The width of a rectangle is 4 meters more then 1/3 its lenght. the perimeter is 64. Find the lenght and width

**MATH**

here you go - just visit - bit.ly/pZYD6P

**MATH**

here you go - just visit - bit.ly/pZYD6P

**math**

bit.ly/o3fZeG

**Chemistry**

What are the half reactions for NH4ClO4 + Al = Al2O3 + AlCl3 + NO? I can balance it once i have the half reactions

**Chemistry**

What are the half reactions for NH4ClO4 + Al = Al2O3 + AlCl3 + NO? I can balance it once i have the half reactions

**Chemistry**

Bob is wrong, by half reactions the hydrogen will balance out with the addition of H2O on the right hand side... i'm doing this problem myself and having trouble separating into half reactions in the first place

**History**

By 1826 was the country more Hamiltonian or more Jeffersonian?

**physics**

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 94.0 kg. The mass of the rock is 0.350 kg. Initially the wagon is rolling forward at a speed of 0.520 m/s. The...

**trig**

as a hot air balloon rises vertically, its angle of elevation from point P on level ground 110 kilometers from th epoint Q directly underneath the balloon changes from 15 degree 5' to 31 degree 45'. Approximately how far does the balloon rise during this period? a. 38....

**CHEMISTY HELP!!!**

Thank you so much!

**CHEMISTY HELP!!!**

A professor found that there are 109 drops of glacial acetic acid in 2.00 mL. Calculate the number of drops of glacial acetic acid, HC2H3O2 required to make 155 ml of 0.25 M acetic acid solution Can anyone walk me through the steps and provide an answer. Ive tried everything ...

**Math**

A college basket ball player makes 80% of her free throws. Suppose this probability is the same for each free throw she attempts. The probability that she makes all of her first four free throws and then misses her fifth attempt this season is

**Math**

Draw Base Ten Blocks to show the number five hundred fifteen.

**Math**

Do the coursework yourself you lazy bum.

**accounting**

What are the ethical issues? Who are the stakeholders? (at least 3) How is each stakeholder you listed in #2 affected? (Be specific). What would you do? Explain

**accounting**

Bill has just started working for a major grocery store as a check-out clerk. Mason is training him in the duties of the new position. At the end of the first day, Bill and Mason are counting the cash in their drawer and reconciling cash receipts to the cash register total. Ma...

**algebra 1b**

it was wrong the first one

**algebra 1b**

(x7 + x4 + x)(x3 - 1) can u help me with this one 2

**algebra 1b**

thanks :)

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