Tuesday
September 16, 2014

Posts by Jenna


Total # Posts: 492

chemistry
3. Describe the subatomic structure of the nucleus of carbon-14, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Write the equation for the carbon-14 isotope decay by beta emission. ...
September 12, 2014

Biology
Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCACCTAGGTTCCG-5’ Tip: If you want ...
August 4, 2014

algebra
Can someone explain how to do this???? Write each expression using a single exponent. x^9/x^2 Answers: x^11 x^7 7 x^5
June 6, 2014

Physics
so you would get 2m/s for both however that is not correct
May 27, 2014

Physics
A 69.5kg football player is gliding across very smooth ice at 2.15m/s . He throws a 0.470kg football straight forward. What is the player's speed afterward if the ball is thrown at 16.0m/s relative to the ground? What is the player's speed afterward if the ball is ...
May 27, 2014

Science
According to the following thermochemical reaction, how much energy is involved in the reaction of 18.5 g of NaHCO3? Is the reaction endothermic or exothermic according to how the thermochemical equation is written? 2NaHCO3(s) + 129 kJ → Na2CO3(s) + H2O(l) + CO2(g)
May 27, 2014

french
I know that it is asking me something about sailing but I'm not sure exactly what it's asking.
May 23, 2014

french
Answer the question in the negative. Est-ce que tu fais de la voile?
May 23, 2014

algebra
Do you multiply .25 x 440 to get the answer? (25 degrees)
May 19, 2014

algebra
The choices are: 25 degrees 90 degrees 98 degrees 172 degrees
May 19, 2014

algebra
110 students like the program. 120 students think the program is unnecessary. 210 students plan on running for student government next year. If a circle graph were made from the data, what is the measure of the central angle for the group that likes the program. I'm not ...
May 19, 2014

french
Je vais au theatre?
May 13, 2014

french
Oui, je suis.
May 13, 2014

french
Is it "Are you going to the theatre?"
May 13, 2014

french
Are they going to the theatre?
May 13, 2014

french
i am not sure what it says.
May 13, 2014

french
Answer the question in a complete sentence: Est-ce que vas au theatre?
May 13, 2014

french
Is Les Miserables an unknown play?
May 13, 2014

french
unknown?
May 13, 2014

french
Have you seen the Les Miserables play?
May 13, 2014

french
Answer the question in a complete sentence: Est-ce que Les Miserables est une piece inconnue?
May 13, 2014

french
ce concert est tres ennuyeux
May 13, 2014

math
find fifteen different fractions between 1/4 and 1/2
May 4, 2014

math
Take west to be the positive direction. The height of a sloped roof above the place where I stand is h = 12 feet (see the figure below). If I move 3 feet west, the height is 10 feet. If I move 2 additional feet west, what is the height of the roof above the place where I stand?
April 5, 2014

physic angular momentum and torque
Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
March 29, 2014

Science
1.   Which of the following is an example of matter?  (1 point) leaves shadows light from the sun sound 2.   Which of the following is an example of a chemical property of matter?  (1 point) ability to melt ability to freeze ability to ...
February 26, 2014

Math xc
I've tried and tried to answer this question..I just hate math and math hates me. So let's get to the point why you are all here 1:Find the unit price for each option below. Round to the nearest cent when necessary. Indicate which option is a better buy. Option 1: 10 ...
February 26, 2014

social studies
In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. ...
February 25, 2014

Math
How many fact families with a dividend under 100 contain only odd numbers
February 11, 2014

Physics
A golf ball is hit with an initial velocity of 15 meters per second at an angle of 35 degrees above the horizontal. What is the vertical component of the golf ball's initial velocity? a)8.6 m/s b)9.8 m/s c)12 m/s d)15 m/s I know you use 15cos 35 feta to solve the question ...
February 3, 2014

Health
Ok! Thanks sooo much I think thats all for now!
January 28, 2014

Health
Ok! A swimmer would like to his time in a 100 yard freestyle race. After talking to his coach, he intends to focus on one critical element at the begining of the race. The swimmer will try to improve his 100 yard freestyle time by improving his power of a recovery stroke ...
January 28, 2014

Health
Nevermind...Would you mind helping me with a few more?
January 28, 2014

Health
Thanks! Are you from connections?
January 28, 2014

Health
Devon and Hunter have been going to the local skateboard park for several weeks and learning new tricks on their skateboards. Some of the older skaters at the park have been giving them tips to be successful. To increase the amount of time Devon stays on the skateboard, he ...
January 28, 2014

Health
Ok thank you!
January 28, 2014

Health
1 Select the skill-related component which is defined as the ability to perform a combination of movements with different parts of your body? A-Balance B-coordination*** C-power D-speed Please help! ASAP!
January 28, 2014

Math please help hurry
A submarine is travelling parallel to the surface of the ocean at a depth of 626m. It begins a constant ascent in order to reach the surface after travelling a distance of 4420m. The ascent takes 35mins. A.) what angle of ascent or angle of elevation would the submarine need ...
December 9, 2013

Acid/Base Chemistry
A 497 mL sample of 0.9960 M HI is mixed with 443 mL sample of KOH (which has a pH of 13.51). What is the pH of the resulting solution? What are the steps to solving this problem? I think you need to find the concentration of OH by taking 10^-pOH, and then do an ICE table from ...
December 8, 2013

Geometry
for each parallelogram find the measures of the angles formed by extending two adjacent side through their common vertex: angle is 90 degrees
December 1, 2013

Math quick question
Thank u so much:)
November 20, 2013

Math quick question
Create a system of linear equations with this situation: Megan considers two different car rental options. One option costs $19 per day plus $0.12 per kilometre . Another option costs $42.50 per day for unlimited kilometres . Thanks :)
November 20, 2013

science
An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
November 6, 2013

Socials
If in Napoleon Bonaparte's perspective, what was the best form of government did he want and why would this be good for the country(France)? Doing a project where you make a campaign trying to persuade people to vote for you(Napoleon) :) Thanks in advance!
October 22, 2013

Physics -URGENT-
A 2 kg mass accelerates at 5.7 m/s 2 in a direction 19◦ north of east. One of the two forces acting on the mass has a magnitude of 17.1 N and is directed north. Determine the magnitude of the second force. Answer in units of N
October 13, 2013

To ms sue
Can you please help me with my English , much appreciated
September 19, 2013

English writing a concluding paragraph
I have to write from specific to general in my concluding paragraph and can't have any contractions, no 1st person or second person , no rhetorical questions , no in conclusion, in summary, etc
September 19, 2013

English writing a concluding paragraph
My essay is about conformity and rebellion. I need a really good conclusion. My intro is this: In life there will be certain situations in which we will have to stay in order or choose to make our decisions ourselves. For example there will be times when conformity will strike...
September 19, 2013

7th Grade
Well we learn about the Earth and DNA and plants and all of the components of a plant we also learn about Animals.
September 16, 2013

Math
how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. y5/3 is under the square root sign sorry I retyped this, but I made a mistake typing it before
September 12, 2013

Math
No wait let me re type the question: y5/3 is under the square root sign
September 12, 2013

Math
the ay was supposed to be a square root sign..
September 12, 2013

Math
how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. ãy 5/3
September 12, 2013

English, check my answers
Oh thank you:)
September 11, 2013

English, check my answers
please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' ...
September 11, 2013

Chemisry
6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?
August 26, 2013

Algebra
The deck around a swimming pool has the same width all the way around. The perimeter of the pool is 50m. The outside perimeter of the deck is 74m. What is the width of the deck
June 10, 2013

Math
if 3/5 of the class are boys and there are 12 more boys than girls. How many girls are there in the class?
June 4, 2013

Physics
An arrow is fired horizontally from the top of a 40.0-m vertical cliff and lands 125 m away. Therefore the arrow was fired at _____ m/s.
May 18, 2013

Physics
I don't understand.. could you give a better answer?
May 11, 2013

Physics
A car that was initially at rest reaches a final speed of +50.0 m/s over a displacement of +55.0 m. What is the magnitude of the acceleration? Find the time it took to travel the first 55 m.
May 11, 2013

environment
United Nations Environment Program Greenpeace
May 11, 2013

chemistry
enzymes convert glucose M=180.2 to ethanol M=46.1 according to the equation C6H12O6=2C2H5OH + 2CO2 what is the maximum mass of ethanol that can be made from 15.5 kg of glucose?
May 4, 2013

math
a company employs 12 gardeners at $26 per day , and 8 clerks at $17 per day. What is the mean daily wage,in dollars,of the 20 employees?
April 28, 2013

math
a man pays 60 cents for every 200m3 of gas used,plus a fixed charge of $13.75. How much does he pay when he uses 55 000m3 of gas?
April 28, 2013

math
simplify in radical form (x^-2/5)^1/4
April 24, 2013

chemistry FP depression
if I had to choose a solvent for a freezing point depression lab...would I choose Chloroform or Benzophenone? and why?
April 23, 2013

chemistry
if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used ...
April 22, 2013

chemistry HELP
if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used ...
April 22, 2013

physics
Thunderstorms can have an electric field of up to 341 × 10 ^5 N/C. What is the magnitude of the electric force on an electron in such a field? The fundamental charge is 1.6002 × 10^−19 C .
April 22, 2013

Physics
A coil with 347 turns of wire, a total resistance of 49 Ω, and a cross-sectional area of 0.28 m2 is positioned with its plane perpendicular to the field of a powerful electromagnet. What average current is induced in the coil during the 0.31 s that the magnetic &#...
April 22, 2013

physics
A flat coil of wire consisting of 56 turns, each with an area of 39 cm^2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 3.1 T to 10 T in 5.7 s. If the coil has a total resistance of 0.56 Ω, what ...
April 22, 2013

Math
Is the equation sinx + cosx = 1 an identity? Why?
March 20, 2013

Physics
A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the string where two pulses ...
March 16, 2013

psychology
The first year after the speed limit was reduced to 55 mph was the first year since there was a federal speed limit that no one in the United States who was observing the speed limit died in an auto accident. What does this prove?
March 4, 2013

Psychology
I know a man who read to his 5 children every night before they went to bed, and they all could read before entering preschool. Suppose that this were true of all children we could find who were read to every night before going to bed but true of only a few of those who were ...
March 4, 2013

psychology
For question #1, can you say that the two variables are positively correlated however, it doesn't mean that running regularly can cause one to lives longer. For question #2, are you saying that there are other variables that need to be considered?
March 4, 2013

psychology
1. A recent study confirms that people who run regularly, live longer. How can one explain that? 2. More retired people die each year than those who have not retired. Does this mean that delaying retirement will increase one's life expectancy? Explain.
March 4, 2013

Psychology
How could my wife and I find out whether the South Beach Diet works for us? Write the methods section for an experiment.
March 4, 2013

psychology
Here is what i come up with. will you see if it make sense? Recruit few random women from her age group. Randomly divided them into 2 groups Assign each group one of the bicycle. Let the two groups compete and see which group perform better.
March 4, 2013

psychology
A friend of mine finished fourth in her age group in the world duathlon (run, ride, run). She has two bicycles that differ along several variables, but she isn’t sure which one will be best for the next season. How could she find out? Write the methods section for an ...
March 4, 2013

psychology
Suppose that you have developed three new kinds of hair shampoo, and you want to know how people's preference depends on their age. Design an experiment to find out.
March 4, 2013

psychology
What implications do the results of an experiment have for subjects that were not observed in the experiment?
March 4, 2013

Math
Use the discriminate to determine the number of real solutions of the equations. 7^2-2x+1
February 25, 2013

Probability/Decision Analysis
A manufacturer is trying to decide whether to build Building A or Building B. The profit per unit is $5. Building A gets an annual cost of $100,000 with a production capacity of 25,000 units each year. Building B gets an annual cost of $200,000 with a production capacity of 50...
February 20, 2013

Statistics
A brewery's filling machine is adjusted to fill bottles with a mean of 32.6 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ...
February 15, 2013

H. CHemistry
if the atmosphere can support a column of mercury 760 mm high at sea level, what height of a hypothetical liquid whose density is 1.40 times the density of mercury could supported?
January 30, 2013

geometry
a ladder is placed next to a building to get to the top. the bottom of the ladder is placed 7 feet away from the building at an angle of 56 degrees.how tall is the building?
January 29, 2013

english
What is the simple subject and simple predicate in sentence: The smell of cooking is delicious to the hungry campers.
December 31, 2012

english
What is the simple subject and simple predicate in the sentence: A good fire is difficult to build.
December 31, 2012

math urgent
i think it b c a
December 20, 2012

Algebra 2
Subract. Put the answer in the simplest form 9/x-4 - 5/x+4
December 19, 2012

Math
1. The total of 36, 78, 198, 475, and 620 is A. 2,109. B. 1,731. C. 1,187. D. 1,407. I say it's D 1407
December 10, 2012

ok
ok any body else thatcould anser this cuz i don't want to do my homework
October 1, 2012

Math Help!
is 10 000 more than 881 462 is 1000 000 less than 2 183 486 is 1 000 000 more than 746 000 is 1 000 000 less than 624 327 207
October 1, 2012

governement
I don't know
October 1, 2012

governement
citizens of a place?
October 1, 2012

government
set of land boundaries of a state?
October 1, 2012

Algebra
What is the rule in equation form of an input/output table if the inputs are 2 10 and 6 and the outputs are 2 6 and 4 ?
October 1, 2012

physics
a car traveling at 7 m/s accelerates to a velocity of 12.0 m/s in 2.0s. what is the acceleartion of the car?
September 25, 2012

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