Wednesday
April 23, 2014

Posts by martin


Total # Posts: 178

physics
A ball moving with a speed of 26 m/s strikes an identical ball that is initially at rest. After the collision, the incoming ball has been deviated by 1 = 50° from its original direction, and the struck ball moves off at 2 = 29° from the original direction (Fig. 9-37). ...

Physics
A 10-kg duffle bag is undergoing a vertical acceleration of 0.050 m/s2 (positive for up, negative for down), while its owner is holding it with an upward force. What is the magnitude of this force?

Physics
A student applies an upward force of 58 N to a 5.1-kg physics textbook. Find the book’s acceleration (positive for up, negative for down).

physics
=4.26

math
the base of a triangle is the same as its height. what are the least whole number measurements for the triangle so that the area would be greater than 144 ft square?

math
the base of a triangle is the same as its height. what are the least whole number measurements for the triangle so that the area would be greater than 144 ft square?

CIS!!%
make a flow chart and a hierarchy chart for a small software company that need to calculate there employee pay and rate of pay with OT

biology
A gene for flower color can have multiple alleles like purple, white, or red. true or false?

biology
Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1. If the alleles are designated R (red seeds) and r (white seeds), what are the probable phenotypes of the parents (P1)? a all white b all red c ha...

third grade math
write three ways to find 3x2x4

Chemistry
are molecules that are polar in nature assymetrical or symmetrical ?i think assymetrical ?

Chem
wait is it 24 moles ?

Chem
i meant 12* moles

Chem
so the answer is 2 moles ?

Chem
given the balanced equation: 2Al2O3(s)-->4Al(s)+302(g) What is the total number of moles of O2 that are produced when 8.0 mol of Al2O3(s)are totally decomposed ? please help me.

calculus 1
find the total area between the curves ( y= 4-x ^2 ) and the x-axis over the intervals [0,4]

calculus 1
find the total area between the curve ( y= 4-x to the second power) and the x-axis over the interval [-3,7]

5th math
How many 3,000s in 270,000

Probability help
The heights of the buildings are normally distributed. The mean of the heights is 275 feet and the standard deviation is 30 feet. A. What is the probability that the buildings height is over 280 feet? B. What is the probability that a sample of 80 buildings is gathered and the...

chemistry
URGENT!! You wish to prepare 1 L of a 0.02 M potassium iodate solution. You require that the final concentration be within 1% of 0.02 M and that the concentration must be known accurately to the fourth decimal place. How would you prepare this solution? Specify the glassware y...

English
The Great Coral Reef almost circles New Zealand and it has more marine life than anywhere else in the world.

chem - freezing point
b. What is the freezing point depression when 153 g of bromine is added to 100 g of benzene?

math 10
yes

math
The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

CIS115
I need to make a program for a small software company to calculate there empolyee pay and make a flow chart with a hierarchy chart that show loops that will allow user to continue processing employee pay until the program user want to stop. For the maximum number of employee d...

teacher aide
how children learn

Acoustics: Noise Vibration and Noise Control
Did you get any further forward with this Chris? I've got the same issues with the same question.

language please check these
ARE THESE CORRECT(do they make sense to u): -he is a columnist -the remedy is working -you will recieve a bonous -i don't know a reason -i bought an anniversary gift -the jewel is expensive -may i borrow an almanac -kate wants the checkersthe signature was forged thank you...

physics
If ball c slid down the hill without friction, how fast would it be traveling the instant it reached the bottom of the hill?

5th grade Math
fractions greatest to least

riddle
i got these hints too HINT : password has no capital letters HINT : those who know me will say 3 and those who don't 4 HINT : password=CHAR[onceeveryfouryear-11]

riddle
yes..it was written like that

riddle
nothing is not the answer:(

riddle
could anyone please solve this riddle : I am what you cannot be but you once were what i will become i am what only blind can see and of infinity and 1 i am the sum i am the cure and i am the cancer?

math
1 x+2=3 - 10

Statistics
How do you code your data?

Statistics
How do you code your data?

Statistics
When is the Analysis of Variance or ANOVA test used?

Statistics
What is the Central Limit Theorem and how can it be used in statistics?

Statistics
I have to sample 300 persons. How do I go about doing this and how do I know that the population I have chosen has the characteristics that I am looking for?

math word problem
Case Eastern Junior College awarded 26 varsity letters in crew, 15 in swimming, and 16 in scoccer. If awards went to 46 students and only 2 lettered in all sports, how many students lettered in two of the three sports?

math
a=9b,for b the solution is b=

Macroeconomics
Which of the following aren't included in the measurement of GDP? Exports Personal income Consumption spending Government spending on goods and services Transfer payments Net interest Imports Investment spending

Chemistry
Calculate the rate at which N2O4 is formed in the following reaction at the moment in time when NO2 is being consumed at a rate of 0.0521 M/s. 2NO2(g) <-> N2O4 (g) I am not really sure how to go about this problem. rate = k (N2O4) d(NO2)/dt = -2 d(N2O4)/dt This is what I...

Business
Hi First off, I do not know anything about US auto parts. I want to know how strong the competition is here. Who are the big players? If you have any relevant articles as well, i would be happy. Thanks in advance Martin

math
so is it 50?

math
a pasta machine costs $33.The ingredients to make one batch of pasta cost $.33.The same amouunt of pasta puchased at a store costs $.99.How many batches of pasta will you have to make for the cost of the machine and ingrediants to eequal the cost of buying the same amount of p...

pre-algebra
your family is driving to houston,texas.A sign indicates that you are 700 miles from houston.Your car's trip odometer indicates you are 400 miles from home.YOu are traveling at an average speed of 60 miles per hour. A. write an expression for the distance(in miles) you wil...

math
um im sorry i still dont understand this

math
your family is driving to houston,texas.A sign indicates that you are 700 miles from houston.Your car's trip odometer indicates you are 400 miles from home.YOu are traveling at an average speed of 60 miles per hour. A. write an expression for the distance(in miles) you wil...

World History
How are the political systems of the Persian Empire and Greece alike?

World History
How are the Assyrian and Phoenician empires alike?

Social Studies
Once a group of people have settled in one location, what happens next?

health
Yes I did, there is no text in our books relating to this particular question. I have checked already.

health
What other reform efforts might be instituted to improve caregivers socialization skills?

health
what types of reform efforts are being implemented to improve caregivers socialization skills?

science
what is the life cycle of moss

Is this a correct english sentence?
Thanks for the help, both of you! Btw, writeacher, it's taken out from a danish book, and it's in past tense, so it shall not be in present.. But thanks

Is this a correct english sentence?
My father had two sons, from whom I was the oldest, and two daughters. Sorry for the inconveinience, but I'm not English, and I've got some translation to do

english literature
thank u very much but the 4th paragraph tells about his writings only about the natural beauty and so on ...but it doesn't tell about other aspects like...social or political where can i find that? i have to write research paper based on 3 works of keats social....politica...

english literature
i am writing a research paper about JOHN KEATS and his 3 works ( social political religious or any)_ but i didn't find some of the things about him. my question is: WHAT ARE THE SOCIAL POLITICAL AND RELIGIOUS CONTRIBUTION OF JOHN KEATS TO THE ENGLISH LITERATURE? or any 3 t...

physics
1.A proton enters a 2.0 X 10^-2 T magnetic field with a speed of 5.8 X 10^4 m/s. What is the radius of the circular path it follows? formula?? 2.Electrons moving at 3.5 X 10^4 m/s pass through an electric field with an intensity of 5.6 X 10^3 N/C. How large a magnetic field mu...

english
"Life begets life. Energy creates energy. It is by spending oneself that one becomes rich.” what does this quote mean??

science
A step-up transformer has 120 turns on its primary coil. It has 1150 turns on its secondary coil. The primary circuit is supplied with an alternating current at 120 V. The current in the secondary circuit is 2.4 A. What current is in the primary circuit? formula??

Microecon
Hi, I've got a question about producer surplus. I know that the magnitude of producer surplus would depend on the elasticity of supply, but i don't know why... Please explain. Thank you!

mats
Volume of a cube is caculated by height x length x width... since they are all equal, root 512 by 3, which would give you 8 cm. to calculate its surface area, find the area of one side first then multiply that by 6, coz a cube has 6 sides.

Calculus
A leaky cylindrical oilcan has a diameter of 4 inches and a height of 6 inches. The can is full of oil and is leaking at the rate of 2 cubic inches/hr. The oil leaks into an empty conical cup with a diameter of 8 inches and a height of 8 inches. a. At what rate is the depth of...

English
For the past few hours, I've been toiling away at this impossible passage's question set. If anyone can help, I will be forever grateful! :) "And, if I hold the true anatomy of myself, I am delineated and naturally framed to such a piece of virtue,--for I am of a ...

BEH / 225
On the text from BEH/225 on the book Personality Ch.11 pp. 421 on the summary table Defence Mechanisms. What defense mechanisms have you noticed in the people around you? What do you see as the advantages and disadvantages of these defence mechnaisms?

Physics
the masses cancel

integrated science
what is.. the modem system of units used by scientists? what is.. the curved surface of a liquid? what is.. a process used to find the volume of an irregularly shaped object? (1) S. I. (International scientific) (2) meniscus (3) total immersion (liquid displacement) The SI set...

Econ MC
d. $0.30

Biology
Hi there, Describe the role of bacteria in biotechnology and genetic engineering. I'd appreciate the help. Thanks. Since this is not my area of expertise, I searched Google under the key words "bacteria biotechnology" to get these possible sources: http://encarta...

Mirco economics
Endownment in economics is the value one places on a certain object... so in this case, i think fixed endowment just means u wud value the oranges as much as the apples

AP chem
Oh ok thats understandable then

AP chem
Wait ronald isnt Jamie your sister??

AP chem
You are too! I slept with you on the first date!

World history
Whar are 5 influences from England that still impact us today?? Magna Carta, English language, bicameral legislature -- three that I can think of right off the bat. Does that get you started?? ??

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