# Posts by Jack

Total # Posts: 1,773

**physics**

F=MA=M*(v2-v1)/T where M=.15kg, v1=-36m/s, v2=45m/s, and T=.002s F=(.15Kg)*(45m/s-(-36m/s))/(.002s) F=(.15Kg)*(81m/s)/(.002s) F=(12.15Kgm/s)/(.002s) F=(6075Kgm/s^2) F=6075N

**Chemistry**

I got stuck.

**Chemistry**

You have a badly tarnished silver teapot. The tarnish is a result of the silver metal reacting with the oxygen in the air according to 4Ag(s) + O2(g) = 2Ag2O(s), Delta H = -62.2 kJ/mol You carefully clean the teapot and then, out of curiosity, you weigh it. The teapot has a ...

**Chem**

.937

**physics**

thunder is heard 4.5 seconds after the flash of lightning is seen. How far away was the lightning flash and how long did it take for the light to reach him?

**physics**

so would it be (Iw^2)/(mv^2)?

**physics**

A projectile of mass m moves to the right with a speed vi. The projectile strikes and sticks to the end of a stationary rod of mass M, of length d, that is pivoted about a frictionless axle through its center. (a) Find the angular speed of the system right after the collision...

**math**

find the interval of convergence of the sum of ((x^1/2)/2 - 1)^k from k = 0 to infinity and within this interval find the sum of the series as a function of x. I know the interval is 0 < x < 16 but how do I get the sum?

**math**

thanks! i just found it in my notes too

**math**

what is the derivative of 2^x? I know that it's something with ln but I can't find it in my notes

**Chemistry**

Calculate the solubility of silver chloride in a solution that is 0.140 M in NH3.

**English**

where can I find a website for idioms tat are hard to find. An example is acts like a hotdog or full of soup.

**math**

Round 16250 to the nearest thousand

**maths**

3 4 7 8 9 find the product of the smallest number

**Business Law**

one o the larger problems in doing business over the web is assuring electronic signatures. What are a few ways e-signatures might be more reliably authenticated?

**Business Law**

If all requirments of a negotiable instrument have been met except delivery. can/should payment depend solely on delivery? If so/not why?

**calculus**

evaluate the indefinite interval: x sec^(2)(9x) dx i know u=x du=dx dv=sec^(2)(9x) and v = 1/9tan9x....but i don't know where to go from there much help is appreciated

**8th Grade Algebra- Answer Check**

a times a + b times b =11 and a times b =3 what does a and b equals

**Math**

Can someone help me with this: Descibe how to construct a histogram for a set of data and Describe how to construct a box plot for a set of data

**Math**

bm,jnnnnnnnnnnnn

**Math (PLEASE HELP!!)**

Hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

**Math (PLEASE HELP!!)**

Mjdkkkkkkkkkksfjvv

**business law**

true or false A grantor of a life estate in real property maintains a reversion estate.

**business law**

the person who holds a life estate in real property can sell absolute ownership or pass it on to his heirs. true or false

**SPANISH**

trying to write a love letter?

**biology**

A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50–L container of cold water, what would be the approximate increase in the temperature of the water?

**Math**

Solve: x^2 + 30 + 5x + 24 = 90

**Biology**

All known proteins in cells adopt a single stable conformation because (a) any chain of amino acids can fold up into only one stable conformation. (b) protein chains that can adopt several different conformations have been weeded out by natural selection. (c) chaperone ...

**Biology**

You wish to produce a human enzyme, protein A, by introducing its gene into bacteria.The genetically engineered bacteria make large amounts of protein A, but it is in the form of an insoluble aggregate with no enzymatic activity. Which of the following procedures might help ...

**math**

In y=mx+b, the y-intercept is given by the value of m. True or False

**adult education**

these are the ones I have correct 2-d,4-d, 5-d, 7-a, 8-b, 9-c, 11-c, 12-c, 14-d,18-a ant the rst were all wrong, please HELP me this class is confusing me

**adult education**

your answers were very inaccurate and wrong. I scored 50% only, I will look up corrections and actually HELP others not hinder there studies for furthure educatio. If you don't know then try to keep to yourself from now on. Thanks

**adult education**

cant figure out # 1-3-6 and7- please help

**chem9th**

okay i have 6 things 2 look 4 to c if a chem reaction 'goes' they r -ppt -color change -change in heat -gas released -light given off -water formes what is the 7th 1?

**Math-help please**

ow stop poking me ok lets come to the point I have a home work were I totally don't understand and ow

**Algebra**

I am supposed to divide (x^3+6x^2-20) by x^2+2, using long division. I know it's very difficult to type long division on the computer, but if you would be able to give me the answer, and I'd work backwords, that would be great, or a simple explanation.

**chemistry**

Draw a lewis structure for BrO4- in which all atoms have the lowest formal changes. Indicate the values of nonzero formal charges and include lonepair electrons.

**math**

what did they call the duck who became a test pilot

**Calculus**

Washer Method: y=x^3, y=1 ,x=2 aroud the Y axis

**Calculus**

nm

**physics**

3.4 N

**Economics**

i don't know any of these but the answers would help me to study for my final exam. does anyone know the answers?

**6th grade**

What is the Buddhist concept of the self/

**cardinal directions**

Northeast and north of east are really the same thing but its more accurate for scientists to say north of east. For north of east, you start east and then rotate --- degrees north. For east of north, it the opposite, you start at north and then turn --- degrees east.

**Calculus**

differentiate y = (x + 2) / (x^3 + x - 2)

**PHYSICS!**

12

**Math**

Neither. You know that lines are parallel if they have the same slope, and perp, if the slope is the negative inverse. The slope is the inverse, but it is still positive. So neither.

**math**

I said it in the reverse order. I'm sorry for the confusion. You SHOULD divide (3 1/2)/(4 3/8), not (4 3/8)/(3 1/2).

**math**

Your error is that you keep trying to divide (3 1/2)/(4 3/8). When you should do it the other way. (4 3/8)/(3 1/2) You should get 4/5.

**pre algebra**

First-Distribute: 8(n-1)= 8xn-8(1)= 8n-8. Now, subtract 10n so you have -2n-8

**Physics**

Stuck again. The paper just says that the position of an object is given by s(t)=t^3. When T=5sec find A. Position B. Velocity C. Acceleration I'm trying to use the "position equation" which is s=1/2 a t^2 = Vot However, what do I solve the equation for? It seems...

**Physics**

A rocket blasts off with acceleration of 5 m/s squared. After 1 min it runs out of fuel. What is the max height and total time in the air?

**english**

unscramble WRONTH to make a verb

**genes**

i do not like home work do not do it ok

**genes**

do not do iits be a rebal

**BIOLOGY**

WHEN A DNA MOLECULE IS COPIED TO MAKE ANOTHER DNA MOLECULE, WHICH STATEMENT BEST DESCRIBES THE RESULTING STRANDS? A. ONE DOUBLE STRANDED DNA MOLECULE IS THE ORIGINAL AND THE OTHER A NEW COPY B. BOTH RESULTING STRANDS ARE ENTIRELY MADE OF NEW DNA BASED ON THE INFORMATION IN AN ...

**Physics**

550*74+4.6*2.3

**7th grade history**

What are the cultural differences between the French and Iroquois?

**physics**

gOOD QUESTION i would think it would be, torque=massball*length*sin46.6 + massarm*length/2cos*46.6

**chemistry**

Please help with this problem =) The combustion of liquid chloroethylene, C2H3Cl, yields carbon dioxide, steam, and hydrogen chloride gas. I. write a balanced equation for the reaction (I sorta get this part) II. How many moles of oxygen are required to react with 35.00g of ...

**history medieval europe**

I have to make some replica artifact (medieval model) eg med map, peasants hut,med village or something along those lines, whats easy and how do I do it, PLEASE....

**literature**

N I G G E R

**science**

I don't how to do a diorama. Please help me.

**science**

CHOOSE ANY DISNEY MOVIE TO MAKE THIS DIORAMA. MAKE A 3D MODEL OF PLAINS, PLATEAU AND MOUNTAINS AND WRITE 5 PARAGRAPHS ABOUT THESE THREE LANDFORMS. PLEASE HELP ME. THANK YOU.

**writing**

Viewers saw two people smashed by a boat, one person choked,and another shot to death. What purpose does this violence serve?

**writing**

make 2 sentences Viewers saw two people smashed by a boat, one person choked, and another shot to death, what purpose does this violence serve.

**writing**

use a subordinate clause with one sentence. The city had one public pool, it stayed packed with children all summer long.

**music**

I've got to design a poster with the main elements of music on, any ideas.

**writing**

edit the sentence to correct pronoun reference. many people believe that the polygraph test is highly reliable if you employ a licensed examiner.

**science**

hey guys all of you are gay

**Physics**

1. What constant acceleration, in SI units, must a car have to go from zero to 69.0 mph in 13.0s ? 2. What fraction of g is this? (the unit for this answer is % of g)

**Math**

the hundreds, tens and ones are in the "ones period". The thousands, ten thousands, and hunderd thousands are in the "thousands period". So 652 in the ones period would be 652 and 739 in the thousands period would be 739,000.

**Religion**

Consider the interrelatedness of everything in the cosmos as it is expressed in many indigenous religions. How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples?

**math**

Thanks guys

**precalc**

Thanks Damon!

**precalc**

so the range is y>-4

**precalc**

what is the domain and range of -4 + 3^(x+2)

**business**

When setting up a production set, what else is important to financial success, aside from linear programming?

**Algebra**

Thanks

**Algebra**

Mulitiply. (c+d)(c^2-cd+d^2)=c^3+d^3 is this correct.

**Algebra**

let do some corrctions sqrt9x+81=x+5= answer was x=35+3sqrt61/2,35-3sqrt61/2. please work with me.

**Algebra**

Solve. ã9x+81=x+5 this is my answer:x=35+3ã61/2,35-3ã61/2 is this correct.

**Sociology**

Functionalists, including Durkheim, argue that deviance can increase social stability in which of the following ways: a. by clarifying society's norms b. by creating social cohesion c. by affirming the collective identity of the group when deviants are punished d. all of ...

**algebra**

sorry i put the wrong question as I know this one what is loge25

**algebra**

Solve logx = 5

**Macro Economics**

Diagram and explain the concept of a function.

**science**

what are some structural, behavioural, and physical adaptations of a goldfish?

**sociology**

Which of the following is(are) true of culture a. participation in the elite forms of culture is expensive b. familiarity with different cultural forms stems from patterns of historical exclusion c.historical exclusion has prevented integration into networks that provide ...

**multiple choice**

thanks a lot Violence is dependent variable

**multiple choice**

In the statement, "Men are more violent than women," violence is the: a. dependent variable b.independent variable c. intervening variable d. control variable Can someone pls help.

**french question**

and what about at night....le soir, je...? or Du soir, je...

**french question**

I want to say In the afterjnoon, I .... is it De l'apres-midi, je....?

**English**

Okay, thanks. I just wanted to make sure there wasn't a possible use of 'must' I was overlooking that would allow me to express "I don't have to" using 'must'.

**English**

Yes, but that seems to say that I must avoid going, whereas what I want to say is that I do not have to go, or that it is not true that I must go, not in so many words.

**English**

Is there a way to express the verb 'must' such that it means the subject does not have to do something? See: I must go. -- I have to go. I must not go. -- I have to avoid going. I can't think of any 'must' equivalent to "I do not have to go". Is ...

**english word**

Halved and quartered are really the only words like that. You just don't see thirded, fifthed, and such. XD Try things that say something has been divided into fifths. Torn into five pieces, separated into fifths, etc.

**algebra**

solve (x+16)*(x-19)*(x+3)>0 The soltion set is{x| } I do not understand this one.

**algebra**

is z^18*z^0=z^18

**Algebra**

Thanks. I made it harder than it was.

**Algebra**

If the sides of a square lengthened by 7cm,the area becomes 196cmsquare. What is the length of the orinal side of the original square?