Thursday
April 24, 2014

Posts by Kevin


Total # Posts: 906

Physics
I have a very similar problem due on mastering physics in an hour.. I came here to get help but now 30 minutes later I'm actually going to be giving help :). Hopefully it wont be too late depending on your time zone. u= coefficient of static friction force of friction = u*...

english
is i a noun?

physics
three point charges are located at the corners of a right triangle where q1=q3= 5uC,Q2= -2uC and r =10cm.(angle q1 q2q3=90 and q1q3=r)

physics
three point charges are located at the corners of a right triangle where q1=q3= 5uC,Q2= -2uC and r =10cm.(angle q1 q2q3=90 and q1q3=r)

english/ grammar
what is a concrete noun?

mgt330
A worker in an automobile assembly line who chooses this type of work because of the job security it entails is said to be Intrinsically motivated Experiencing overpayment inequity Experiencing underpayment inequity Extrinsically motivated Self-actualizing

MARKETING
Your company’s sales are 50,000 units. The unit variable cost is $12. Your markup percent on sales is 40% and your fixed costs are $100,000. 1. What is your profit / loss?

mgt 330
General environment – how will the forces be changing over the next three years and how will these forces impact the industry (for example, demographics – aging population)?

mgt330
List at least one reason why you think workers may be more motivated by job security rather than salary and benefits in difficult economic times.

mgt 330
List at least three reasons why workers might be more satisfied with their jobs than in the past. List at least one reason why you think workers may be more motivated by job security rather than salary and benefits in difficult economic times

calculus
Let f(x)= Cube root(x + 2) and g(x) = x^3 - 2. Which of the following are true? I. g(x) = f^-1(x) for all the real values of x. II. (f£»g) (x) = 1 for all reak values of x. III. The Function is one-to-one.

calculus
(a) Graph the parameterized curve described by x = 2sint, y = -3cost, 0<= t <= pi. Indicate the direction in which the curve is traced. (b) Write a Cartesian equation for the parametrized curve. What portion of the graph of the Cartesian equation is traced by the paramet...

calculus
Find the parametrization for the left half of the parabola: y = x^2 - 4x + 3.

college
What role does ovaries play in the homeostasis subject, and what other reaearch about the ovaries is currently taking place?

Electricity
How long will it take to? 500 kms of wire, 1 curcuit breaker at one end and light at the other end. How long will it take, once the breaker is on for the electricity to travel 500kms to turn the light on.

math
a rectangular table top measures 4/5 of a meter long by 4/5 of a meter wide. What is the area?

economics ss
which is a valid generalization based on the information in the chart

sociology
• How does studying social institutions help sociologists understand society?

AP Biology
Plants have three basic organs, roots stems and leaves. Describe in detail the types of cells and tissue involved with each organ and their function in transport mechanisms in plants.

Chemistry
Just to confirm, the answer is 2.004748935 x 10^-5, right?

trigonometry
A construction worker working at 300 feet from the ground, drops a nail onto the ground below. The function, s(t) = -4.9t2 + 300, gives the height (in meters) of the object as it falls to the ground. The velocity at time t = 3 seconds is given by lim(t->3) s(3)- s(t)/ 3-t. ...

trigonometry
A construction worker working at 300 feet from the ground, drops a nail onto the ground below. The function, s(t) = -4.9t2 + 300, gives the height (in meters) of the object as it falls to the ground. The velocity at time t = 3 seconds is given by lim(t->3) s(3)- s(t)/ 3-t. ...

Probability
1) What is the probability of tossing 6 coins and getting at least two tails? 2) Suppose you flip a penny, a nickel,a dime and a quarter. What is the probability of getting heads on the penny and nickel and dime and tails on the quarter? Please show steps for the solutions. Th...

Algebra
Joleen is a sales associate in a clothing store. Each week she earns $250 plus a commission equal to 3% of her sales. This week her goal is to earn no less than $460. Write and solve an inequality to find the dollar amount of the sales she must have to reach her goal.

STATISTICS
a. Probability of drawing a white ball is 10(number of white balls)/ 30 (total number of balls) since the balls are replaced, the probability remains the same for the second ball, that is 10/30. To determine probability of drawing balls with replacement is found by multiplying...

math
solve in terms of r:s=a/1-r

physics
with sig figs: 1,000,000

Electronic Instrumentation
I'm having trouble finding Q2. -5.2 x 10^19 x 6.2 x 10 ^18?

Electronic Instrumentation
Calculate the force in Newtons that exists between a positive charge of 2C and a negative charge of 5.2 X 10^19 electrons separated by a distance of 25 cm.

Calc
f(x,y,z) = y; W is the region bounded by the plane x+y+z=2;cylinder x^2+z^2=1. and y=0. What I have set up isL 4 int(0 to 1) int(0 to sqrt(1-x^2)) int(0 to 1-x-y) y dydzdx. But solving this is pretty cumbersome. Any other ideas?

Chemistry
The hydrogen in an eudiometer has a volume of 80 ml when the pressure is 740 mm. what's its volume at standard pressure?

algebra 3
what statement best describes the function f(x)=2x^3+2x^2-x?

7th grade
six coins are dropped on the floor. find the probability that they will all land heads up.

Chemistry - Molecular orbital Config
So when asked to draw the molecular orbital configuration, you draw the orbital configurations for each element in the compound while doing something with the pi and sigma bonds?

Chemistry - Molecular orbital Config
I'm having trouble with this problem on my homework, We are supposed to write the molecular orbital config for a molecule. Could someone walk me through the process of how to do this and I'll see if I can get the hang of it? What I have to draw is a diatomic molecule. ...

Econ
How do i explain the change of evolution of financial markets over the past 2 years? i feel like what i have now is just a simple breakdown of how the crisis happened. any advice?

ALGEBRA
alright. the first one would be easiest if you multiplied out the numbers before the parenthesiss into the numbers inside. so itll look like 50=3r+48-2r+4.the u can simplify the right side and get 50=r+52. subtract 52 from both sides and your answer is r=-2 the second one firs...

algebta 2
To find the nth term of an arithmetic sequence the formula given is a(sub n) = a (sub 1) + (n-1)d. Why is (n-1) a part of the formula? Why isn't just n?

chem 1406
now you just multiply them. the number you had before was right just not the whole cancelling out stuff.

chem 1406
you had it set up right before. ur messing up the algebra. you were solving for the x kj so in order to do that you would have to multiply both sides by the 2000 moles. the moles and 200o would cancel on one side and just the moles on the other. but your number is correct. if ...

chem 1406
you shouldve got a bigger answer and ur solving for the kj not kj/mol. remember you have to multiply the 2000 moles by the 4130 kj/mol to get rid of the mole.

chem 1406
yep

Chemistry
you have to keep in mind its asking for the greatest increase ionization energy when the between the removal of the first and second electron. That is basically saying it will lose 1 electron no problem but the second one would be a lot harder. therefore you would have to look...

Math Probability
yes

another college chem
sry we have not gotten that far yet. wish i could help

Math
theres 2 different methods u could do. u could solve for either x or y in one of the equations and replace the one you solved for. thatd be the easiest with those numbers

College chemistry
you have to convert it from joules to calories and idk that off hand but other then that it looks good so far

College chemistry
specific heat of h2o is 4.184

College chemistry
it makes sense too because if you think about it you are making a 5.0 L solution and 191.20 mL isnt even 1/5 of a liter

College chemistry
yep

College chemistry
use the equation drbob222 gave you before. its the right one. you may have to convert the 5 L to mL first though for it to work or understand that ur answer is in L and convert it. one or the other

Chemistry
if im missing any info plz tell me ill get back to it asap. it was put in a styrofoam cupand the temperature of the solution was measured directly if that helps at all. i just need to know i guess whether or not im treating the data as a coffee cup calorimeter or doing somethi...

Chemistry
g+ 2HCl-->MgCl2+H2 The mass of the HCl is 24.852 g mass of the Mg is .990 g and the mass of the calorimeter is 3.711 g. the change in temperature of the solution was +19 degrees celcius. itd be great if i could just get a basic equation to use or something i can do the numb...

geometry
the first thing that you need to do is solve for x. The sum of the interior angles inside a pentagon is equal to 540 degrees. you come up with the equation 2x+6x+4x-6+2x-16+6x+2=540. Then you want to simplify it down to 20x-20=540. there are multiple ways you can finish this b...

Chemistry
opps i suppose i forgot to give the temperature change and it was a +19 degrees celcius

Chemistry
Mg+ 2HCl-->MgCl2+H2 The mass of the HCl is 24.852 g mass of the Mg is .990 g and the mass of the calorimeter is 3.711 g. How do I calculate the heat of the reaction of all this please?

trig
you have to use the law of sines which a/sinA=b/sin B=c/ sin C where the top letter is the opposite side of the angle and the lower letter is the angle itself. first you would go about solving this for angle B by putting 12/sin 76=4/ sin B. doing simple algebra the equation co...

algebra 2
is that exactly how it is showed or is there a log base? normally that means theres a log base 10 and if that is the case the answer is 10^3.2. in a more general sense x=b^y and putting it in terms of y the equation is y=logbx were b is subscripted i just dont know how to do t...

Math
What's the difference between sample space and event in a lottery game (where 50 numbers are drawn and you have to guess/pick six numbers?). Can you give examples of both?

economics
How is the demand curve for an item that is very responsive to price changes likely to be different from that of an item whose demand is not very responsive?

EGYPT
bobpursley what are some of the conflicts the website doesn't work

EGYPT
I NEED TO KNOW ABOUT EGYPT THESE ARE THE QUESTIONS THAT I HAVE TO ANSWER: -IS THERE RURAL AREAS -IS THERE ANY CONFLICT(RELIGIOUS,SLAVERY ETC.) -IS THERE ANY POLUTION THAT'S ALL THANK U

trig
prove the trig identity cos(4x) = 2-sec^2(2x)/sec^2(2x)

6th grade
Kara has a diamond ring. Her ring has a volume of 6cm(to the third power) and a mass of 2g. What is the density of her ring? INCLUDE UNITS!

Pre Calculus
The electricity in your house is alternating current because the current varies sinusoidally with time. The frequency of sinusoid is 60 cycles per second. Suppose at Time = 0 seconds the current is at its max of 5 amperes. Write an equation expressing current in terms of time

math
The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? (b) If 60 students took the exam, how many got a score between 50% and 70%?

math
Explain how to evaluate x-8 when x=10?

math
five names for -73

Math
Is anyone familiar with base ten? I need to show my work on how I recieved my answer. Write the numeral in base ten. 200six =532

algebra
A wheel makes 4 17/20 revolutions per minute. If it rotates for 48 minutes,how many revolutions does it make?

social
Ok, I think both of these are syndicated but im so confused! The type of programming aired by a station with which they "affiliate" is called A) syndicated programming B) local origination C) network programming D) non of the above This type of programming, produced ...

social
Ok, I think both of these are syndicated but im so confused! The type of programming aired by a station with which they "affiliate" is called A) syndicated programming B) local origination C) network programming D) non of the above This type of programming, produced ...

social
The "jack fm" format is an attempt to stimulate the random programming of an ipod on shuffle. True or False I'm really not sure what it is.

social
i agree with the first one, but why would the second one be false? when somethings head to head wouldnt it be 2 programs battling and 1 trying to be successful?

social
Never mind I'm not sure thats why i asked, how about the other question i think thats false do you?

social
unique as in do they have a competitor

social
Are both these false? A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to successfully program against a simila...

social
Are both of these false A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to successfully program against a simi...

social
Can you help me please, i think it is false but im not sure A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to...

Social Studies
Thank you so is the first one true as well?

Social Studies
Is this true or false: The radio business and the record business are interdependent; they have strong ties between them. i think its true and also is this true or false Radio programming can derive from locally produced, syndicated or network programming. A) True B) False

math
A TV reporter said that twice as many woodlands were lost this year to fire than in the preceding year. He claimed this was an increase of 200%. Was he correct?

Determinants
Why are finding determinants important? Aside from Cramer's rule when are determinants used?

Math
Write 0.36 as a fraction.

math
a girl flipped a coin 4 times, what is the probability that she gets 3 heads and 1 tails? Using a tree diagram

Math
Hey buddy, i'm pretty sure this is against the rules. just so you know, its unlikely that you'll get much help from this site. i think you should use a different site if you want help...the census, just a thought. best of luck to you, i can already tell you are going t...

Finance
What is the current yield of a annual coupon bond with a 6% coupon, four years until maturity, and a price of $750?

Math
A standard train ticket in a certain city costs $2.50 per ride. People who use the train also have the option of purchasing a frequent-rider pass for $18.00 each month. With the pass, a ticket costs only$1.75 per ride. How many train rides in a month make the frequent-rider pa...

Math
Solve and graph the solution set on a number line. |5x + 7| - 2 < 4 <------------------------> -5 -4 -3 -2 -1 0 1 2 3 4

Algebra 2
Solve each equation: (x^2-3)(x^2+3x-4)=0 (x+2/3)(x^2+5x+1)=0 x^3-2x^2+x=0 x^3+3x^2-5x-4=0

Global History
How did military motivies contribute to imperialism? and why did missionaries support imperialism?

Global History
How was Nationalism a cause of imperialism? and what was gained economically through imperialism?

Math
How do I make 2/30 into a percent? I don't need answer only need to know how to solve.

Math
I am suppose to write 2/30 as a percent. My answer choices are a .o6%, b. .005% c. .6% d. .05% I thought I would divide 2 into 30 which would be .06 and then moving 2 spaces to the right equaling 6%. How do I solve this problem.

Math
How would you work this... You are facing north. You turn 270 degrees counterclockwise. Which direction are you facing? Is it West? You start out at 90 and go from there? I don't know...

math
Suppose the cost C(q) (in dollars) of producing a quantity q of a product equals C(q) = 500 + 2q +1/5q^2 The marginal cost M(q) equals the instantaneous rate of change of the total cost. Find the marginal cost when a quantity of 10 items are being produced.

math
Solve the inequality x^2 + 7x + 12 < 0.

math
Find the domain of g(t) = sqrt (3t + 15.)

math
If f(x) = 3x + 9 and g(x) = −x2, then find f(g(1)).

Physics
A 90 kg halfback runs north and is tackled by a 120 kg opponent running south at 4 m/s. The collision is perfectly inelastic. Just after the tackle, both players move at a velocity of 2 m/s north. Calculate the velocity of the 90 kg player just before the tackle. a.) 3 m/s sou...

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