Wednesday

January 28, 2015

January 28, 2015

Total # Posts: 1,148

**Physics**

What is the gravitational force between two 10 kg iron balls separated by a distance of 0.1 m? How does this compare with the weight of one ball?
*January 27, 2015*

**Physics**

What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)
*January 27, 2015*

**Physics**

A fully equipped astronaut has a mass of 170 kg. If the astronaut has a weight of 675 N standing on the surface of a planet, what is the acceleration due to gravity on this planet?
*January 22, 2015*

**Chemistry**

Virtually all the nitric acid manufactured commercially is obtained by the ammonia oxidization process. This involves this first step: Ammonia gas combines with oxygen to form nitrogen monoxide and water vapour. a) Write a balanced equation for the reaction 6 NH3 + 4 O2 -> ...
*January 20, 2015*

**Language arts **

Which question should you ask during third reading of the muti-draft reading progress? A. Who is the speaker, or the voice that "Say" the words of the poem? B. how has the work expanded my idea's or my imagination? C. What do the word choices and imagery tell me ...
*January 14, 2015*

**English**

In which sentence contains a predicate pronoun? A. We gave him a standing ovation B. The winner is she. C. Are they coming to our play? D. He was the poet Laureate in?
*January 14, 2015*

**science**

the area drained by a river and its tributaries is called its
*January 12, 2015*

**Fine Art **

Which characteristic best describes Chinese brush paintings? (Points : 3) They depict idealized representations of the human form. They include small touches of gold paint to add decorative detail. They feature a limited variety of brushstrokes in order to create a sense of ...
*January 8, 2015*

**math**

Idk
*January 2, 2015*

**math**

3lbs cost $23.25 6lbs cost $46.50 9lbs cost $69.75 12 lbs cost $93.00 15 lbs cost $116.25 Based on the table,what is the constant of proportionality when using weight to find price?
*December 17, 2014*

**Math**

real funny
*December 17, 2014*

**Math**

someone help please
*December 17, 2014*

**Math**

a. -8 3/8 + 6 1/4 b. 4.2 -(-2.6) c. 2 1.2 - 3(-5 + 7.25) + 5 I don't want the answers, I just want to know how to find the answer.
*December 17, 2014*

**math**

A bolt contained 25 yards of flannel. Nikki used 9 2/3 yards to make holiday decorations. How many yards are left?
*December 16, 2014*

**math**

in a resort town, the number of people employed during any given month, f(x) in thousands, can be modeled by function f(x) = 2.3 sin 30 (x+1) + 5.5, where x represents the month, with january =1 and february =2 and so one
*December 14, 2014*

**physics**

A football punter accelerates a 0.61 kg foot- ball from rest to a speed of 9 m/s in 0.24 s. What constant force does the punter exert on the ball? Answer in units of N.
*December 13, 2014*

**Math**

Give two different combinations of transformations that would transform f(x)=5x+3 into g(x)=15x-12
*December 9, 2014*

**physics help please please please!!!**

A spaceship lands on a new planet. the crew decides to measure the speed of sound in the planets atmosphere. taking a tube with a length of 50 cm, they find that one resonant frequency occurs at 2,520 Hz, and the next resonant frequency at 2,940 hz. what is the speed of the ...
*December 8, 2014*

**Intro-Physics Help Please**

A spaceship lands on a new planet. the crew decides to measure the speed of sound in the planets atmosphere. taking a tube with a length of 50 cm, they find that one resonant frequency occurs at 2,520 Hz, and the next resonant frequency at 2,940 hz. what is the speed of the ...
*December 7, 2014*

**Reading**

Doesn't it seem (abnormal,insubordinate) for a bright young person to show no interest in taking part in any school activities?
*December 5, 2014*

**math **

3x=15
*December 5, 2014*

**Help math**

a ribbon measuring (v+4) feet in length was cut into two pieces in the ratio 3:7. What was the length of the longer piece? answer
*December 4, 2014*

**Biology**

Pod color and pod shape were two other traits Mendel was interested in. Set up a dihybrid cross for these two traits. Note: Green pods are dominant over yellow pods and inflated pods are dominant over constricted pods. -Start off with both parents as heterozygotes/hybrids for...
*December 4, 2014*

**pre-algebra**

The length of a kitchen is 1 1/4 inches. The actual length is 20 feet. What is the scale of the kitchen
*December 3, 2014*

**MATH**

Spencer wants to plant strawberries for his garden. To do this, he has to increase the garden and the fence around it. Spencer decides one side can be twice as big and the other side four times as big. One side measures 7feet long and the other side is 5 feet long. What is the...
*December 1, 2014*

**Algebra**

find the domain and range of y=f(x) {4 if -6</= x< -2 f(x)={absolute value of x if -2</= x< 8 {cubed root of x if 8</= x</= 14 it is piecewise, I am completely lost on how to even set up this function.
*November 24, 2014*

**Math**

I have a peice of lumber that is 18 feet long can 18 prices of lumber make 5 shelves
*November 6, 2014*

**Algebra II**

Hi! I really need help with my homework, but I don't have anybody to ask. The problem asks me to find the vertex, focus, and directrix of the parabola: x^2-12x-48y+276=0. All help is apprectiated! Thank you.
*November 5, 2014*

**MCC**

An investor in the 28% tax bracket is trying to decide which of two bonds to select: one is a 6.5% U.S. Treasury Bond selling at par; the other is a municipal bond with a 5.25% coupon, which is selling at par. Which of these two bonds should the investor select? Why?
*October 29, 2014*

**chemistry**

How many milliliters of a 0.200 M HI solution are needed to reduce 21.5 mL of a 0.365 M KMnO4 solution according to the following equation: 10HI+2KMnO4+3H2SO4 ---> 5I2+ 2MnSO4 +K2SO4+ 8H2O
*October 18, 2014*

**Chemistry 101**

Based on the masses of CaCl2 and Na3PO4 you determine from the periodic table,what mass combining ratio would you predict?
*October 17, 2014*

**us history**

what best summarizes the population decline of native americans.
*October 17, 2014*

**Math**

what is 603kg = ? g. I don't get how to do the problem
*October 14, 2014*

**Art Need help Please**

i need help too
*October 13, 2014*

**Chem Help Please!**

In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass of the compound measured in the mixture. Explain why this is only an approximation.
*October 5, 2014*

**English**

In the myth "When Grizzlies Walked Up Right" explain how the bears lived in relation to each other before and after the introduction of the female into their clan. Please help me
*September 28, 2014*

**Chemistry**

Four isotopes of Lead occur naturally: 204Pb (mass = 203.973037 amu) 206Pb (mass = 205.974455 amu) 207Pb (mass = 206.975885 amu) 208Pb (mass = 207.976641 amu) If the percent abundance of 204Pb and 208Pb are 1.400 and 52.40, respectively, what is the percent abundance of 206Pb...
*September 24, 2014*

**math**

A certain pencil comes 4 in a package for $.75. Find the cost of 24 pencils.
*September 24, 2014*

**algebra**

Jesse and Larry entered a pie eating contest. Jesse ate 5 less than twice as many pies as Larry. They ate a total of 16 pies. How many pies did each eat.
*September 24, 2014*

**Algerbra**

Human body temperatures are normally distributed with a mean of 98.20°F and a standard deviation of 0.62°F if 19 people are randomly selected find the probability that they're mean by temperature will be less than 98.50 degrees Fahrenheit
*September 16, 2014*

**Physics Help**

Divers for many years have dived into the ocean from the cliffs of Acapulco, a distance of 35 m above the water. How fast are the divers moving when they hit the water? If the divers travel a distance of 5 m through the water before momentarily coming to rest, what ...
*September 11, 2014*

**Physics Help**

Freshly picked cucumbers are dropped into a bin from a height of 1.25 m above the bottom of the bin. Assuming that the bin is empty, how fast is a cucumber going when it hits the bottom of the bin? How much time does it take the cucumber to fall to the bottom of the bin? Thanks!
*September 11, 2014*

**Physics Help**

the question is like this! It doesnt have any units.
*September 11, 2014*

**Physics Help**

1) two cars start at the same location and accelerate for the same amount of time. if one car has twice the acceleration of the other, how will the final speeds of the cars compare? by how much farther will the faster car outdistance the slower car?
*September 11, 2014*

**math **

the ratio relationship betweeen 19:7 and 7 to 26
*September 11, 2014*

**Physics Help Please**

1) two cars start at the same location and accelerate for the same amount of time. if one car has twice the acceleration of the other, how will the final speeds of the cars compare? by how much farther will the faster car outdistance the slower car?
*September 11, 2014*

**Chm Help Please!!!**

you wish to purify by distillation a material that has a boiling point of 205 C and reacts with air but this material will decompose if heated above 150 C. How would you set up the system to distill this material? Thanks!
*September 9, 2014*

**physics**

A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush baby accelerates over a distance of 0.18m while extending the legs. The acceleration during the jump is approximately constant. What is the ...
*September 9, 2014*

**Chemisty 132**

How much energy (in kilojoules) is needed to heat 5.55g of ice from -13.5 ∘ C to 26.5 ∘ C. The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.
*September 7, 2014*

**Physics **

Two 0.75m -long pendulums hang side by side. The masses of the pendulum bobs are 65g and 85g . The lighter bob is pulled aside until its string is horizontal and is then released from rest. It swings down and collides elastically with the other bob at the bottom of its arc.To ...
*September 7, 2014*

**Chemisty 132**

How much energy (in kilojoules) is needed to heat 5.55g of ice from -13.5 ∘ C to 26.5 ∘ C. The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.
*September 7, 2014*

**Chemistry **

a solution of OH- ions is added to a beaker of pure water at 25 C, to a final concentration of 872 nM. Calculate the pH of the solution. I know that pH=-log[H+], but I'm still really confused as to how to convert the nM to M and how to solve this problem.
*September 5, 2014*

**history**

i have to have a 500 word essay i have 300 i need some extra help What options did Native Americans have at their disposal? What means of resistance and accommodation did different Indian groups choose, and why do you think they made those choices? What was the possible range ...
*September 2, 2014*

**physics**

(a) What is the acceleration of gravity on the surface of the moon? m/s2 (b) What is the acceleration of gravity on the surface (or outer limit) of Uranus? The mass of Uranus is 8.68 ✕ 1025 kg and its radius is 2.33 ✕ 107 m.
*July 21, 2014*

**us history**

The Quasi War was waged between the United States And?
*July 8, 2014*

**social studies**

It's says complete the sentence. When the suspect appears in court,her case will be judged by a group of her?
*July 6, 2014*

**algebra**

The scientific notation 3.14 x 10 -3 has what value
*July 2, 2014*

**math **

okay so I have to work out this problem for school work and I don't understand it. the problem is : if the perimeter of an isosceles triangle is 2x + 10, what is the length of one of the congruent sides ? PLEASE HELP ME !
*June 18, 2014*

**algebra**

Which choice does not equal the others? How do I figure this out? A. 4% of 3,000 B. 40% of 30 C. 40% of 300 D. 30% of 400
*June 3, 2014*

**algebra math**

A deck has 12 cards numbered 1 to 12. Ashley needs a number greater than 9 to win a game. If she selects a card at random, what is the probability that she will win?
*June 3, 2014*

**math**

A) which is the better value a 12 ounce jar of honey for $2.25 or an 18 ounce jar of honey for $3.24? B) the supermarket displays the unit price for the 12 ounce jar in terms of cost per ounce, but displays the unit price for the 18 ounce jar in terms of cost per quart. ...
*May 11, 2014*

**math**

A architect is designing a house. The scale on the plan is 1 inch=6 feet. If the house is to have a length of 90 feet and a width of 30 feet, how long will the line representing the house's length on the blue print
*May 11, 2014*

**Math**

don't know
*May 9, 2014*

**Math**

45
*May 2, 2014*

**Math **

A fish and game worker catches, tags, and releases 120 trout in a lake. Later, she catches 84 trout and finds tags on 30 of them. Estimate the number of trout in the lake. A.43 B.234 C.336 D.3600 Is it C?
*April 29, 2014*

**Science**

What contribution does the African elephant make to the world.
*April 27, 2014*

**Quantitative Methods**

1. Management of Sundown Rent-a-Car (see Problem 8-8) has decided that perhaps the cost during the six-month period is not the appropriate Cost to minimize because the agency may still be obligated to additional months on some leases after that time. For example, if Sundown ...
*April 24, 2014*

**Chemistry**

The chemical reaction for the generation of gas in an automobile safety air bag is 2NaN3(s)→ 2Na(s)+3N2(g) What volume of gas is produced if there are 130.0 grams of NaN3 used in the reaction? (The density of nitrogen gas is 0.916 g/L.) Please show your work.
*March 31, 2014*

**Chemistry**

The chemical reaction of 100 g of salicylic acid, C7H6O3, with excess acetic anhydride produces 50.0 g of aspirin, C9H8O4, according to the equation. What is the percentage yield for the reaction shown below? Please show your work. C7H6O3+C4H6O3→C9H8O4+C2H4O2
*March 31, 2014*

**algebra**

Jeremy had 36 community concert tickets to sell. He sold 2 and 3 and a third of the tickets did jeremy sell
*March 29, 2014*

**Calculus**

The vertical position of an object is modeled by the function h(t)=-16t^2 +5t+7, where h is measured in feet and t is measured in seconds. Find the object's initial velocity (that is, the velocity at t=0). Is it 5 feet per second?
*March 26, 2014*

**English Literature**

comparing the way he feels to being sharper than a serpent's tooth?
*March 18, 2014*

**English Literature**

"sharper than a serpent's…" repeats the 's' sound?
*March 18, 2014*

**English Literature**

Or maybe imagery?
*March 18, 2014*

**English Literature**

I have a feeling it's either metaphor or alliteration, but I'm not sure.
*March 18, 2014*

**English Literature**

To laughter and contempt; that she may feel How sharper than a serpent's tooth it is To have a thankless child! Away, away! The dominant figure of speech in this passage is: A) alliteration B) assonance C) simile D) metaphor E) imagery
*March 18, 2014*

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

6.C 6.How did European rule in South America change the people of the continent? A. European missionaries introduced religion. B. European colonists brought diseases that killed millions of natives. C. European conquistadors incited conflict on the continent. D. European ...
*March 17, 2014*

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

1.A 2.C 3.A 6.D 9.B 1. why do most people live in the western part of colombia? A. to enjoy the cooler climate of the mountains B. to be closer to the border with venezuela C. to live along the pacific coast D. to benefit from the country's lush rain forests 2. what are ...
*March 17, 2014*

**social studies**

1.D 2.B 3.B 4.A 5.C 6.A 7.D 8.B 9.B 10.C 1. why do most people live in the western part of colombia? A. to enjoy the cooler climate of the mountains B. to be closer to the border with venezuela C. to live along the pacific coast D. to benefit from the country's lush rain ...
*March 17, 2014*

**Language Art help**

How does the great radio scare help you gain an understanding of past events? A.it tells why people are afraid of things they dont understand B.it tells of a radio broadcast that sounded so real people believed it was true C.it tells of an event that led to changes in what ...
*March 16, 2014*

**health(MS.SUE)**

1.D 2.A 3.D 4.B 5.C 6.C 7.B 8.A 9.D 10.D 11.B 12.A 1. Joey lifts a heavy backpack off the ground.as he lifts the backpack,he keeps his legs straight and uses his biceps and back muscles to lift.in your analysis of joeys's form,you conclude he needs to use his A. arm ...
*March 16, 2014*

**health**

1.D 2.A 3.D 4.B 5.C 6.C 7.B 8.A 9.D 10.D 11.B 12.A 1. Joey lifts a heavy backpack off the ground.as he lifts the backpack,he keeps his legs straight and uses his biceps and back muscles to lift.in your analysis of joeys's form,you conclude he needs to use his A. arm ...
*March 16, 2014*

**SocialS..**

Hello everyone i only have one question today that im curious about. Thanks Which industry provides the most benefits for the environment? A.Cattle ranching B.ecotourism C.tourism D.large-scale farming
*March 12, 2014*

**Environmental Science**

On Earth in the extreme northern and southern latitudes, how does the relationship between GPP and NPP change during an entire year’s time?
*March 6, 2014*

**History **

In January 1917, President Wilson outlined a "new world order" in which: a. freedom of the seas should be reevaluated as a vital American policy. b. the League of Nations should be replaced by the United Nations. c. self-determination would be the foundation of ...
*February 27, 2014*

**math**

Normally the variable will go on the right side of the number. Despite this fact, 6z and z6 are the same. For example if z= 2 ; then 6z=6(2)=12 or z6 =2(6)=12
*February 27, 2014*

**Statistics**

.0051
*February 25, 2014*

**Advanced Math**

In a game you flip a coin twice, and record the number of heads that occur. You get 10 points for 2 heads, zero points for 1 head, and 5 points for no heads. What is the expected value for the number of points you’ll win per turn?
*February 19, 2014*

**physics**

A 78.0 kg person is being pulled away from a burning building as shown in Figure 4.27. Calculate the tension in the first rope, T1, if the person is momentarily motionless.
*February 12, 2014*

**physics**

Two teams of nine members each engage in a tug of war. The first team's members have average masses of 64 kg and exert average forces of 1350 N horizontally. The second team's members have average masses of 69 kg and exert average forces of 1371 N horizontally. (a) ...
*February 12, 2014*

**Science**

Posted by Marie on Thursday, January 30, 2014 at 6:10pm. Which of the following shows the correct order from coldest to hottest average annual temperature? a. Taiga-Tundra-Rainforest-Temperate forest b. Rainforest-Temperate forest-Taiga-Tundra c. Temperate forest-Taiga-Tundra-...
*January 30, 2014*

**Why was my ? deleted**

I guess it is a bit annoying to me when I see people post like an entire exam and ask for answers. I'm also doing this course, and I get the need for help, but I am here studying, trying really hard to read and find the answers myself, while some people have the nerve to ...
*January 8, 2014*

**math**

Ellen works for a high-speed rail company that wants to develop a new rail line. Ellen’s project is to find a train that is the second fastest in the world. The Shinkansen Bullet Train in Japan is reported to go as fast as 320 kilometers per hour. The TGV train in France ...
*January 2, 2014*

**Environmental Science**

A nuclear burning power plant produces a total power of 1.1kW. It serves a community that requires 2.85 x 107 kJ of power over the entire year. How many days per year does the power plant need to operate to provide all this power? 300 days 250 days 365 days 200 days 150 days
*December 22, 2013*

**Science**

Which of the following ets of terms could be used in a deseription of the peripheral nervous system?
*December 12, 2013*

**science**

I need the definition of an observation that use color, shape, texture, smell, taste
*December 9, 2013*

**Social studies**

Which of the following be explains why a species of lizards is able to live in the desert but not in a tundra regions?
*November 6, 2013*

**Science**

For lunch, Jane Doe consumed the following: a turkey sandwich on whole wheat bread with mayonnaise, lettuce, and tomato; potato chips; and apple juice. 1.Trace the path of digestion through Jane from beginning to end. Include the nutrients the food contained and are broken ...
*October 27, 2013*

**algebra**

Sophie bought a total of 27 guppies and angel fish. She bought twice as many guppies as angel fish. How many of each kind of fish did Sophie purchase?
*October 24, 2013*

**Applied Physics**

When a 3600 lb automobile runs out of gas, it is pushed by its unhappy driver and a friend a quarter of a mile (0.250 mi). To keep the car rolling, they must exert a constant force of 175 lb. (a.) How much work do they do? (b.) If it takes them 15 minutes, how much power do ...
*October 22, 2013*

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