# Posts by John

Total # Posts: 8,394

physics
A person opens a door by applying a 11-N force perpendicular to it at a distance 0.90m from the hinges. The door is pushed wide open (to 120 ∘ ) in 2.2s How much work was done? What was the average power delivered?

physics
What is the acceleration (in m/s^2) of a vehicle that changes its velocity from 85 km/h to a dead stop in 13 s?

physics
A person opens a door by applying a 11-N force perpendicular to it at a distance 0.90m from the hinges. The door is pushed wide open (to 120 ∘ ) in 2.2s How much work was done? What was the average power delivered?

statisic
I will get you started. You want see if .85 is different from .70 The numerator of your fraction will be: .85 - .70 Always subtract the population proportion from the sample proportion. The .15 has to be divided by the standard deviation. Do you have that formula? The value ...

Math
Christine's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Christine \$5.85 per pound, and type B coffee costs \$4.40 per pound. This month, Christine made 174 pounds of the blend, for a total cost of \$906.25. How many pounds of type ...

Oh ok is it A then?

Wouldn't it be the opinion of what you would think a wise person would do?

Every profession or field invents its own specialized words, in order to express complicated ideas without excessive wordiness.   Business-speak contains some useful phrases, but also suffers from three major problems: unnecessary words, euphemistic words, and ...

For example, "vis-a-vis" is often used instead of the simpler "in relation to" or "compared to." In this case, the business-speak phrase isn't much shorter than existing phrases, but it is definitely more obscure. This is a step in the wrong ...

Business-Speak In recent years the business world has coined its own unique, jargon-filled sub- language. This sub-language is often called "business-speak" (or "manager-speak," since some of its most enthusiastic users are managers and executives).

English
United Nations, 310, 314, 362 charter of, 311   Declaration of, 309  United States, 225, 238, 275, 289   in Big Four, 322, 325-7   in League of Nations, 299   Lend-Lease policy of, 307   Neutrality of, 305...

English
Pandas  Eating Habits......................................... 1-15  Reproduction......................................... 16-20  Geographic Areas ................................. 21-22  Endangered Species...

English
Thank you!

English
Count' -verb 1. to list numbers sequentially 2. to add up; enumerate 3. to include in a reckoning 4. to deserve consideration, to have merit -noun 5. the act of counting, a calculation 6. the total number resulting from a count 7. Baseball, the number of balls and strikes ...

Language Arts
I think number one is After you sign the agreement, it is too late, of course, to change your mind.

Language Arts
I think number two is Importantly, some of the best-preserved early human remains have been discovered in peat bogs.

Language Arts
1)The sentence says: After you sign the agreement, it is too late, of course, to change your mind. After you sign the agreement it is too late of course, to change your mind. After you sign the agreement, it is too late of course to change your mind. After you sign the ...

English
That is how I see it. Except for where it says counters, it should say counts.

English
Count' -verb 1. to list numbers sequentially 2. to add up; enumerate 3. to include in a reckoning 4. to deserve consideration, to have merit -noun 5. the act of counting, a calculation 6. the total number resulting from a count 7. Baseball, the number of balls and strikes ...

English
While dragonflies have several traits that inspire wonder, many people believe these flying insects are pests. Dragonflies spend much of their lives around water. They not only lay their eggs in or near the water, but their ??? young also develop in the water. In fact, ...

English
Thank you!

English
Which of the following sentence from the passage contain an opinion A) Snow blowers (also called snow throwers) can make the sometimes-difficult often unpleasant task of clearing snow from sidewalks and driveways much easier. B) Most snow blowers are gasoline-powered, though C...

English
Which of the following would be considered primary sources for this passage? manufacturer product manuals product reviews on the internet manufacturer warranty statements critical reviews in a trade journal Based on the passage, which of the following purchases makes the most ...

English
Snow blowers (also called snow throwers) can make the sometimes difficult, often-unpleasant task of clearing snow from sidewalks and driveways much easier. Before making a purchase, however, it’s best to learn a few snow blower basics. Most snow blowers are gasoline ...

But I think it could also be persuasive.

Which of the following writing styles best describes this passage? Descriptive Creative Technical Persuasive is it descriptive

News reporting Time magazine made waves in 2006 when, instead of selecting a politician, entertainer, or activist as its Person of the Year, it selected "you." The magazine's intention was to illustrate how millions of user-post blogs, videos, pictures, and other...

English
Extending her arms over the left-field wall,the baseball plummeted toward the fan,and she caught it cleanly on the fly before displaying the home run ball for all to see. a. Extending her arms over the left-field wall b Toward the fan c On the fly d Before displaying the home ...

English
Then perhaps D. It seems to be the only one left that could start off the paragraph.

English
I meant to say A, is that the one you disagree with?

English
i meant A

English
Which of the following sentence orders best forms an organized, logical paragraph? 1. Planning for a test involves determining the time needed for studying, reviewing notes and previous assignments, and prioritizing the content matter to be studied. 2. Students should ...

english
yes. Thank you

english
In a days work,the employees met their goals for the week. a days" b employees' c day's d employee's i think it is C

English
I did, thank you.

English
nothing else seems to make sense

English
it should still be C right

English
That's how it is

English
Which of the following sentences is punctuated correctly? A carpenter must use certain tools, hammers, saws, chisels, to finish a job. A carpenter must use certain tools hammers, saws, chisels -to finish a job. A carpenter must use certain tools – hammers, saws, chisels ...

english
i meant B, sorry

english
there's a period after the first one also

english

english
Which of the following sentences is written correctly? Mother gets a bit of family news, whenever my aunt visits her Mother gets a bit of family news whenever she visits my aunt. Whenever Mother and my aunt visit, she gets a bit of family news. Whenever Mother visits my aunt ...

English
yes, therefore it should be subject-verb agreement. right?

English
I did not see a nonessential clause, so I didn't think it could be A

English
i think D because there's no comma after stating.

English
Their professor, who was known for his imposing demeanor, looked around the classroom before stating. "Each of you students are responsible for arriving to class on time" Which of the following language conventions is violated in the sentence above? a.Punctuation for...

english
Thank you, and yes there's supposed to be a period at the end.

english
Which of the following sentence correctly follows the rules of punctuation and capitalization? There are two main sources of water pollution: Sewers and factories There are two main sources of water pollution: sewers and factories There are two main sources of water pollution...

Chemistry
You are given 75mL of 1mol/L NaOH and 75 mL of 1mol/L HNO3 at atmospheric pressure. After mixing the two compounds, he measured a rise in temperature from 25°C to 32°C. Find the change in energy of the system in kJ/mol. (Known: Density of aqueous solution is 1.00g/mL ...

Biology
How a radioactive element will decay over time?

Chem
I still am lost on how to find OH- Kw being 1 x10^-14 could leave any possibility for H

Chem
Mostly the H+ is what is confusing me

Chem
Compute values for [H] [OH] and pH of the following aqueous solutions. Tabulate the answers for comparison. Spell out the reasoning in each calculation a) 0.010M HCL b)0.0010M NaOH c) 0.010 N Ba(OH)2 (strong electrolytes assumed to be 100% dissociated.

pre-algebra
55=8-6t+3+2t

Math
A spherical water balloon has a diameter of 10 cm. How much water is needed to fill the balloon, in cubic centimeters? Round your answer to the nearest centimeter. (Use 3.14 for π.)

L A
2 is right

education
Have you changed in regards to how you work with children?

Calculus
Please check my answers. Solve the following equations and/or system of equations for the unknown variables. 1. x^2-3x-12=0 x= 3 + sqrt(57) / 2, x= 3 - sqrt(57) / 2 2. x+y=8 , 3x+2y=2 x=-14, y=22 3. 3x + 2y =10 , x+y=5 , y+z =9 x=0,y=5, z=4 4. 1/x-p1z=0, 1-p2z=0, I-p1x-p2y=0 ...

education
Has your understanding of young children changed as a result of your practicum experience? Explain. can anyone explain what this question is asking for?

Physics
See I having trouble with this question because I could just used - GM1M2/R but this is respect to Earth. So I have no idea how to set this up.

Physics
A satellite of the Earth has a mass of 1550 kg. It orbits Earth with a mean radius of orbit of 7.00 x 10^6 m. a) What is the gravitational potential energy of the satellite with respect to Earth?

after the dna strands are separated, which of the following is the next step of DNA replication in the S phase of the cell cycle? Action of helicase formantion of RNa primer breaking go hydrogen bonds joining of nucleotides i think either B or D

in evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following observations provides the most convincing support for hypothesis? a) there are more types of RNA than there are DNA b) RNA contains combined catalytic, structural, and genetic ...

after the DNA strands are separated, which of the following is the next step of DNA replication in the S phase of the cell cycle? A) Action of helicase B) formation of RNA primer C) Breaking of hydrogen bonds D) joining of nucleotides i think it is either B or D

therefore it would be B since mitochondria deals with atp right??

i was debating between B and A. but I am a little more on B

Which of the following factors is the most likely explanation for an energy deficit that results in exercise-induced exhaustion? a. inefficient protein production b. insufficient mitochondrial function c. impaired urea elimination d. absence of oxygen transporters on the cell ...

it has been hypothesized that chloroplasts originated from photosynthetic cyanobacteria that became symbiotic inside a host cell. Which of the following observations provides the strongest evidence for this suggestion? A) microscopically, chloroplast appear similar to ...

math
30 - 24 = 6 students were absent, therefore 6 (who were absent) divided by 30 (the total number of students) which becomes 0.2 but you should multiply by 100 in order to get percentage. Therefore, 0.2 x 100 = 20%

In order to figure out percentage you should know which numbers are dividing by each number. Based on the question, 240/3000 = 0.08 However, when you want to get a "percentage" you should multiply by 100 which becomes 8%. Therefore 8% of teeth was lost.

Math
The questions doesn't provide sufficient information. I recommend you look over your question again.

Math
In order to figure out consecutive odd numbers you should know what numbers should be included. Odd numbers basically means the number that isn't multiples of 2 such as 1,3,5, and etc. Therefore 203,205,207 are the three numbers.

Physics
How much work is needed to move a -8.00 uC charge from the ground to a point whose potential is +75.0V ? I know -8.00 uc = -0.8 x 10^-6 then I used W = Fd but I can't seems to get right answer any hint is appreciated.

PHYSICS
7.33

Physics
If a small planet were discovered whose orbital period was twice that of Earth, how many times farther from the Sun would this planet be? The answer for this one is 1.6 earth radii, but I can't seems to get solution to find the answer. I would appreciate for any hint or help.

Chemistry
It's half life - try looking in your book.

maths
simplify the square root of 20 minus the square root of 5 plus the square root of 45

Physics
Calculate the tension in the string if a single pulley of velocity ratio 5 is used to raise a body of mass 200g through a distance of 4cm.

Math
tan theta = 842/72.6

education
The children’s performance in relation your main objective listed on the activity plan what is this question asking. example please

Calculus max/min
d=0.767. There are two parallel sidewalks that are separated by the park that is 600 feet wide. You are standing on the south sidewalk facing east. On the north sidewalk, 2000 feet ahead of you, is a bus stop. You can walk on the sidewalk at 5.5+d feet per sec. You can walk ...

Education
What view do you have of the children's skills and competencies? In what ways do you need to transform your view of children to see them in a more positive light? what is this question asking for? example please.

math
thank you guys. I really appreciate the help.

math
can you answer it, mrs. sue?

math
yes

math
You were given 10 math problems for homework. You completed 310 of them at school. Which equation shows how to find the fraction of the problems you still must do to complete your homework?

Law & Ethics
yes, I too believe it is D. you answer that, Debbie!

math: 68-95-99.7 rule
suppose that prices of a certain model of new homes are normally distributed with a mean of \$150,000 use the rule to find the percentage of buyers who paid: between \$150,000if the standard deviation is \$1200

physics
A football kicker can give the ball an initial speed of 25m/s. What are the greatest and least elevation angles at which he can kick the ball to score a field goal from a point 50m in front of goalposts whose horizontal bar is 3.44m above the ground?

Calculus and Vectors
A plane is flying south east at a constant speed of 900km/h. The wind is blowing towards the north at 100km/h. Determine the resultant velocity of the plane relative to the ground.

chemistry
Table of enthalpy of solution for selected cesium salts Compound and ΔsolH kJ mol-1: - Cesium bromide: 25.98 - Cesium iodide: 33.35 - Cesium chloride: 17.78 - Cesium fluoride monohydrate: -10.46 - Cesium fluoride sesquihydrate (·1.5H2O): -5.44 Data taken from CRC ...

Math
By using the numbers 1, 1,1, 5 and 6 only once but need to use all and using any math get the number 51

Calculus I
Marketing tells you that if you set the price of an item at \$10 then you will be unable to sell it, but that you can sell 500 items for each dollar below \$10 that you set the price. Suppose your fixed costs total \$3000, and your marginal cost is \$2 per item. What is the most ...

Economics
A business can produce its product in different versions: Version A has a basic design and a lower cost and Version B has an upgraded design and a higher cost of production. The business knows there are different types of customers, “High” demand (H) and “Low&#...

physics
The figure above shows a chain being held on a table with one quarter of its length hanging over the edge. Friction is negligible. The chain has length L = 24 cm and mass m = 0.012 kg. Calculate how much work is required to pull the hanging section back onto the table.

physics
A 13 ohm, 35 ohm, and 2k ohmresistor are connected in a series circuit with a 190 V battery. What is the equivalent resistance of the circuit?

Calculus Indefinite Intergral
I need help with integrating these two problems. Im stuck. 1. integrate (sin^-1)dx/((1-x^2)^3/2) sin^-1 aka arcsin 2. integrate dx/((1-x^2)^3/2) by using 1/z Any and all help will be appreciated!