Posts by katie
Total # Posts: 2,213

Physics
Anybody help me with this? A disk with mass m = 6.5 kg and radius R = 0.41 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.4 m from the rope and at a frequency f = 19.4 rev/s (with a direction shown by the arrow). 1) What is the ... 
physics
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.9 kg and the sign has a mass of ms = 15.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the horizontal wire holding up the beam is attached... 
chemistry
Please Help!!! 
chemistry
What's the net ionic equation for the reaction: PH3(g) + O2(g) ? P2O5(s) + H2O(g)? Please go step by step:) 
Physics
A uniform disk with mass m = 9.42 kg and radius R = 1.31 m lies in the xy plane and centered at the origin. Three forces act in the +ydirection on the disk: 1) a force 315 N at the edge of the disk on the +xaxis, 2) a force 315 N at the edge of the disk on the –yaxis... 
physics
An object is formed by attaching a uniform, thin rod with a mass of mr = 7.42 kg and length L = 4.88 m to a uniform sphere with mass ms = 37.1 kg and radius R = 1.22 m. Note ms = 5mr and L = 4R. 3) What is the moment of inertia of the object about an axis at the center of mass... 
Math
THIS GAVE ME THE WRONG ANSWER AND I GOT IT WRONG! THANKS A LOT! >:( 
science
What are three reasons lichens are useful to humans? Thanks! 
physics
A mass m = 88 kg slides on a frictionless track that has a drop, followed by a looptheloop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it around the loop if ... 
physics
A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough patch a distance d... 
Health
Okay, so in order to help you you have to give us YOUR answers. You can’t just ask for the answer. This website is for HELP not for cheating 
math
The difference between two numbers is 4. The sum of the smaller number and three times the larger number is 36. What are the two numbers? 
Physics
a ball of putty has a mass of 1.5kg and is rolling toward the north with a velocity of 2m/s. it collides with another putty ball with the same mass travelling towards the east with a velocity of 10m/s. find the velocity of the combined mass after a completely inelastic collision 
Calculus
a small business estimates that its profit from producing x items can be modelled by: P(x) = 0.003x^3  1.5x^2 + 200  1000 due to limited space and capital, the number of items produced must not exceed 350 items. Explore the model and make suggestions to the business owner to... 
physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 41 m/s and an initial vertical velocity of 22 m/s. 1) What is the speed of the cannonball 1.7 seconds after it was shot? 2) How high above the ground is the cannonball 1.7 seconds after it is shot? 
physics
Determine the x and y components of the following three vectors in the xy plane. 1) (a) A 14m displacement vector that makes an angle of 22° clockwise from the +y direction. x: 2) y: 3) (b) A 19m/s velocity vector that makes an angle of 40° counterclockwise from the... 
physics
A blue ball is thrown upward with an initial speed of 21.0 m/s, from a height of 0.8 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.3 m/s from a height of 24.6 meters above the ground. The force of ... 
Lesson 4: Classifying Polygons
Meh is right. 
Math
Find the volume of the rectangular prism. A 23in^3 B 297in^3 C 318in^3 D 159in^3 Please help and the numbers H 3 l 9 w11 
I need help!
Write as a percent rounde the percents to the nearest tenth if necessary 5/7 
geometry
If a triangle has a 4 meter side and a 9 meter side, between what lengths could the last side be? I have the answer, but I can't figure out why/how. Thanks! 
Statistics
According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? B) all 11 will return? C) at least 6 will return D) at least one will return E) how many... 
math HELP PLEASE
Describe each pattern with the general term: a. 2, 4, 6, 8 ... b. 4, 7, 10, 13 ... c. 1, 4, 9, 16 ... 
math HELP PLEASE
T1 = 1 T2 = 0+5 = 5 T3 = 2*6 = 12 T4 = 100÷2+10 = 60 T5 = 1*31 = 2 Like this? 
math HELP PLEASE
Given the pattern rule, write the first 5 terms for each sequence: a. Start with 0, add 5 b. Start with 2, multiply by 6 c. Start with 100, divide by 2 and add 10 d. Start with 1, multiply by 3, subtract 1 
Chemistry
How many molecules are there in 6.8 grams of CO2 
Chemistry
The approximate concentration of hydrochloric acid, in the stomach is 0.17M .calculate the mass of the following antacids required to neutralize 50mL of this acid; 1.) bicarbonate of soda, NaHCO3 2.) aluminum hydroxide, Al(OH)3 
Math
Bill wants to paint the ceiling and four walls of his bedroom. The room is 6.0 m long, 3.0 m wide and 2.4 m high. Paint comes in 4 L cans. One litre of paint covers 10 m2. What area does Bill need to paint? How many cans of paint does Bill need? 
Math
A trapezoid has an area of 60 cm2 and a height of 5 cm. What is the sum of its parallel sides? 
Math
The cost of fish is $6.75/kg. What is the cost of 850 grams? 
Math
A green paint is created by mixing 3 parts of yellow with every 5 parts of blue. How many gallons of yellow paint are needed to make 44 gal of this green paint? 
Math Help
The area of the parallelogram is given. Find h ———————————\  \ \  \ \ h  \ 12m2 \  \ \  \ \  \ \ — — ——————————\ h 6m 
literature
In the house on mango street, after she gets married, what does Sally do all day because her husband won’t allow her to do all that she wants? A. She sits and looks out the window and at her possessions. B. She talks to her friends on the telephone. C. She reads and ... 
history
"Man is born free, and everywhere he is in chains." The quote above most accurately reflects the need for which of the following Enlightenment ideals? •individual freedom*** •faith •moderation 
Math
How does x + 0.08x turn into 1.08x? 
chemistry
NaOH + HCl ? NaCl + H2O 
Math
Given a rectangle is transformed using the rule (x,y)?(x,y),what transformation occurred?Rotation or reflection.If Rotation name the direction and degrees and if reflection name the line. I think it's Rotation 180 degrees.Is that correct? 
Language arts
Think it's b too 
my success
The card holders name and expiration date is on the front of the card while the info about the day the account was opened is not mentioned anywhere on the card. 
my success
It's the magnetic strip. 
Math
Given a rectangle is transformed using the rule (x,y)?(x,y),what transformation occurred?Rotation or reflection.If Rotation name the direction and degrees and if reflection name the line. 
Math
No I'm sorry I got confused.You are correct.Thank you. 
Math
Will it be reflection over the origin or will it be rotation 180 degrees clockwise/anti clockwise 
Math
Given the points A=(2,3) and B=(3,1),if they are transformed to the points A'(2,3) and B'(3,1) what transformation occurred?Rotation or reflection?If rotation name the degree and direction and if reflection,name the line of reflection. No graph necessary. 
english
can someone help me for free to put the word abstract in a sentence? 
literature
From "There will come soft rains", Although Bradbury’s story takes place in the future, what real war is Bradbury commenting on in his story? [Hint: the story was published in 1950] How was that war fought/won differently than WWI? What technological development... 
History, please check
yes b,c,d is correct just took this & got 100% 
ssidk
In the late 1990s the Mexican government passed a number of laws concerning the manufacture and operation of automobiles. These included switching to cleanerburning fuels, installing catalytic converters on new cars, requiring tougher vehicle inspections, and converting city... 
ss
Historians generally agree that the first international slave trade in Africa was A) with Portuguese traders. B) across the Indian Ocean. C) across the Sahara Desert. D) the TransAtlantic Slave Trade. *** 
ss
command economy cuba 
ss
I trying to choose between c and d? 
ss
In which country would you MOST expect to find statecontrolled industry, the greatest amount of restrictions on private business ownership, and the majority of the population working for the government? A) Brazil B) Canada C) Cuba D) Mexico idk this can someone explain? 
ss
5)A 8) B 
ss
5)A 8)I don't get it the occupation of Germany involved Hitler who killed thousands of jews 
ss
In what way is the government of the United Kingdom similar to that of the United States? A) Both have a head of government that is a member of the legislative branch. B) Neither government has a formal set of written laws as a framework. C) Both have seen their powers ... 
social studies helpppp
France and Britain were able to avoid the worst of the Great Depression because A) their colonies were required to purchase goods from them.**** B) neither had any significant involvement in international trade. C) the Great Depression affected only the United States, not ... 
Market economy/government
2)D 
Market economy/government
I do not get this question, can you explain/ give me a link plz? 
Market economy/government
In a market economy, a high price will usually cause A) producers to offer less and consumers to buy less. B) producers to offer less and consumers to buy more. C) producers to supply more and consumers to buy less.*** D) producers to supply more and consumers to buy more The... 
ss
Can you check my other posts plz? 
ss
Europeans began to settle in Latin America in the 1500s. Many of these settlers married Native Americans. The children of mixed European and Native American ancestry were called mestizos. . Mestizos became a new A) peer group. B) ethnic group.*** C) family group. D) political... 
Social Stuidies
Thanks Ms Sue can you check my other post? 
Social Stuidies
What was happening in Europe during the 1600s which caused Europeans to explore new trade routes? A) A period of religious revival was beginning. B) The enlightenment created a spirit of adventure.*** C) Political pressure pushed many to leave Europe for new lands. D) The ... 
ss helpppp
can you check my other post? 
ss helpppp
actually B 
ss helpppp
I do not get the 2nd question, Can you explain it to me plz? 
ss helpppp
The most obvious influence of British colonization on the country of Australia is Australia's A) use of the English language.**** B) adoption of British currency. C) declaration of war on France. D) participation in world trade. Which of these marked the southern border of... 
Social Studies urgent
I meant B 
Social Studies urgent
1)A? 
Social Studies urgent
All of these were inspirations for 15th Century European exploration of the Western Hemisphere EXCEPT A) the desire to spread Christianity B) the desire to conquer India and China C) the desire to establish new trade routes to Asia D) to search for basic resources and land ... 
Trade
thx 
Trade
One of the PRIMARY reasons that trade between nations takes place is because A) no nation can be economically selfsufficient. B) resources are evenly distributed around the world. C) nations use their absolute advantage in production to monopolize international markets. D) ... 
Diseases SS
ok, thx 
Diseases SS
In the years between 1517 and 1617, which disease killed the greatest number of Native Americans in Florida? A) Measles B) Smallpox *** C) Influenza D) Bubonic Plague 
SS check plz
:) Your the best 
SS check plz
If governments around Europe reduced funding for primary and secondary schools, which of these would be the MOST likely to be the result? A) Europeans would take more vacations. B) Europeans' standard of living would decrease. **** C) Europe would export more "high ... 
Social Studies please help fast
thx Reed, :) 
Social Studies please help fast
Which of these is a natural result of specialization? A) Isolation is caused by specialization. B) When people specialize they become rich. C) Specialization leads to interdependence.*** D) Specialization leaves people worse off than without Why were the Europeans able to ... 
algebra 1
Are these both prime? Can they be factored? y^2y+156 and r^29r39 Thank you 
algebra 1
If the volume of a prism is 3x^2 + 6x  24, what are the dimensions? Please help. 
Science
which of the following is true about kinetic energy select all that apply A as an objects speed increases kinetic energy decreases B only moving objects have kinetic energy ••• C kinetic energy increases as an objects height increases D kinetic energy depends on... 
Algebra
A worker gets 18 dollars per hour for a normal work week of 40 hours and timeandahalf for overtime. Assuming he works at least 40 hours a week, construct a function describing his weekly paycheck,P, as a function of the number of hours worked, t. P(t)=____ dollards I PUT P(... 
English
Identify the compliments in the sentence the newspaper published an article and an editorial about mayor Sharon Pratt Texan 
Algebra
Thanks for the help! It actually helped it... the answer was 27.4*(.961)^t)) 
Algebra
The yearly per capita consumption of whole milk in the United States reached a peak of 40 gallons in 1945, at the end of World War II. By 1970 consumption was only 27.4 gallons per person. It has been steadily decreasing since 1970 at a rate of about 3.9% per year. (a) ... 
science
Where are the major zones of volcanism? Thanks! 
Math
Eleven seats on a condominium association board for buildings Amity, Buddy, and Chum are to be apportioned. Current Representation: Amity Buddy Chum 1 800 2113 4050 2 267 704 1350 3 133 352 675 4 80 211 405 5 53 141 270 Use the given table of HuntingtonHill numbers to list ... 
Math
Eleven seats on a condominium association board for buildings Amity, Buddy, and Chum are to be apportioned. Current Representation: Amity Buddy Chum 1 800 2113 4050 2 267 704 1350 3 133 352 675 4 80 211 405 5 53 141 270 Use the given table of HuntingtonHill numbers to list ... 
Algebra
Factor: x^2+6x Please give step by step directions! Thanks! 
Calculus help
Yes... I had been working on it for some time before i posted it. 
Calculus help
Oh, nevermind, i figured it out. The answer is 1. It was simpler than i thought 
Calculus help
You are going to make many cylindrical cans. The cans will hold different volumes. But you'd like them all to be such that the amount of sheet metal used for the cans is as small as possible, subject to the can holding the specific volume. How do you choose the ratio of ... 
Art
Find examples of tints, shades, primary and secondary colors, and warm and cool colors in "the banjo lesson". Thanks! 
English
The Rhythm and rhyme patterns of the Limerick form are important because A) funny poems should have rhyming lines B) they make limericks easy to understand C) they add to the humor of limericks D) they make Limericks easy to write 
CHEM 101 (edited)
Calculate ?Hrxn for the following reaction: CaO(s)+CO2(g)?CaCO3(s) Use the following reactions and given ?H values: Ca(s)+CO2(g)+1/2O2(g)?CaCO3(s), ?H= 812.8 kJ 2Ca(s)+O2(g)?2CaO(s), ?H= 1269.8 kJ I have literally tried everything and I don't understand what I am doing ... 
CHEM 101
Calculate ?Hrxn for the following reaction: CaO(s)+CO2(g)?CaCO3(s) Use the following reactions and given ?H values: Ca(s)+CO2(g)+12O2(g)?CaCO3(s), ?H= 812.8 kJ 2Ca(s)+O2(g)?2CaO(s), ?H= 1269.8 kJ 
Algebra
Factor this: x^25x+12 It may be prime. I tried to work it out, and I ca't figure out how, and that is whyI think it may be prime. Thanks! 
english
What happened to the men that eat the Lotus? What does this suggest about the main problem that Odysseus has with his men? (From the Odyssey) Thanks! 
english
What are some reminders of The Iliad and The Odyssey that can be found in today’s world? Why does Penelope not agree to marriage even after 10 years of waiting for her husband to return? Who would be our modernday equivalent of Greek bards? I am so confused! Sorry for ... 
english
After escaping the Sirens, in which direction does Odysseus sail toward the home of Scylla and Charybdis? Scholars have named the Straits of Messina as the home of Scylla and Charybdis. Why might these watery threats be attributed to this geographical feature? (from the ...