# Posts by Matt

Total # Posts: 2,399

**Physics**

1. A pair of narrow, parallel slits separated by a distance of 0.408 mm are illuminated by green laser light with wavelength of λ = 537.5 nm. The interference pattern is observed on a screen 1.56 m from the plane of the parallel slits. Calculate the distance from the ...

**Trig**

I'm really having a hard time determining an equation for a pendulum problem. It has to be in the form H(t)=asin[b(t-c)]=d. I've already determined a=25, d=30 and b=pi/14 but I can't figure out how to get c (the phase shift). How do I figure out the phase shift in ...

**Math**

Could someone please help with this question. State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y = 2sec(-2x + 180°) + 3 in the following way. 1)graph y=sec(x) 2) apply a horizontal compression by a factor of 1/2. 3) apply a vertical ...

**Math**

Thank you very much!

**Math**

Can someone please explain (cos(x)+sin(x))/(cos(x)-sin(x)=sec(2x)+tan(2x). I have no luck with this. Thanks

**Physics**

A small, nonconducting ball of mass m=1.0mg and charge q=2.0*10^-8 C (distributed uniformly through it's volume) hangs from an insulated thread that makes an angle theta = 30 degrees with the vertical, uniformly charged nonconducting sheet. considering the gravitational ...

**Physics**

Damon, I think you made an arithmetic error here: 3.75 m g = 44.5 d^2 - .85 m g 44.5 d^2 = 2.90 m g It should be 44.5d^2 = 4.6 m g Then solve from there, I made that change and got the right answer.

**Auditing**

lool no one will answer all the questions for you over here..google termpapergurus..they will do your hw for you :) its really neat

**Math**

A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area? Please help me find the COMPLETE dimenssion of the box.

**Math**

what are the complete dimensions?

**Math**

A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?

**math**

What is the answer to t=100(n+3)? Solving for N.

**physics**

In a daring rescue by helicopter, two men with a combined mass of 172-kg are lifted to safety. (a) If the helicopter lifts the men straight up with constant acceleration, is the tension in the rescue cable greater than, less than, or equal to the combined weight of the men? ...

**Math**

State domain, range, period, vertical asymptotes, zeros, symmetry and y-intercept of y = -2tan(3x + 180°) + 3 I just need to know if there is a formula to find the vertical asymptotes, symmetry, and zeros or do I have to solve it graphically. Thanks.

**Calculus**

How do you take the derivation of the following function and equate to zero? sqrt of (100t^2-320t+400).

**Physics**

1325N

**science**

How does oxygen production relate to the rate of photosynthesis?

**Earth Science**

If the continental crust were thinner than its average thickness of 40 km, would it depress the mantle more or less than it does now? Explain.

**calculus**

Let A(x) be the area of the rectangle inscribed under the curve with vertices at (-x,0) and (x,0), x > 0. a. Find A(1). b. What is the greatest value of A(x)? Justify your answer. c. What is the average value of A(x) on the interval 0 < x < 2?

**earth**

the area around the great lakes was once covered by thick sheets of ice. Use the principal of isostasy to explain how the melting of these ice sheets has effected the land around the lakes?

**Precalculus**

Find dy/dx if y= (6x sqrt(x^3) (-2(cubic root of x+ pie^4).

**Math**

The coordinates of P are (-2,5) the coordinates of Q are (6,1). What is the equation of the perpendicular bisector of PQ? *I was able to figure out that the slope of line PQ is -1/2 and the equation of PQ is -1/2x+4=y

**Physics**

88.2N and UP

**computer science**

THANKS! but how would I do the second part? "Modify the program so it calculates and displays the amount of money Packaage A customers would save if they purchased Packages B or C, and the amount of money Package B customers would save if they purchased Package C. If ...

**computer science**

I need help with my Java homework! Write a program that calculates a customer's monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display the charges. ...

**computers**

Determine the functional dependencies that exist in the following table; then convert this table to an equivalent collection of tables that are in third normal form: Marina, (MarinaNum, Name, (SlipNum, Length, RentalFee, BoatName) ) *Note MarinaNum is underlined

**Chemistry**

Thank you for the help DrBob

**Chemistry**

I don't understand these two questions. Any help on how to figure this would be great. Thanks. 1. Write the equation for the decomposition of the hydrate, MgC*XH₂O 2. Write the equation for the decomposition of the hydrate, CuSO₄*XH₂O.

**7th grade essay writing**

hi i learned how to write essays at colleage who needs help ?

**geometry**

Ffgff

**math**

write this equation in standard form. y=1/2x2+12x-8 y equals one half x squared plus 12x minus 8

**Math**

The directions for this problem is to simplify the equation using like terms. I'm confused. 3(2t-9)-2(5t-3)

**History**

All of the following were reasons for the failure of the People's (Populist) party EXCEPT a.the radical nature of its program alienated non farming interests b.racism strained the coalition of poor White and Black farmers c.the Democratic party co-opted some of the ...

**Calculus**

its proven by the mean value theorum f'(c)=f(b)-f(a)/(b-a)

**trig**

Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I still can't figure this out.

**trig**

Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.

**physics**

Vector V1 is 6.4 units long and points along the negative x axis. Vector V2 is 8.9 units long and points at 60 degrees to the positive x axis 1) find x and y components of v1 and v2? 2) find magnitude of the sum v1+v2? 3) find the angle of the sum v1+v2? I found the answers to...

**calculus**

U-Substitution 1. 3x(sin^2((3x^2)+1)cos((3x^2)+1)dx 2. (x^3)(sqrt((3x^2)+1)) dx u = ((3x^2)+1) then?

**math**

isnt the area of a triangle .5bh?

**accounting**

try the termpapergurus..they do you homework for you at a very reasonable price..be sure to check them out

**math**

Thank You SO Much! :)

**math**

Which of the following are true of ordinary whole-life insurance policies? 1. The insured pays premiums on this type of insurance until his death. 2. Ordinary whole life insurance covers the insured for the states term of the policy. 3. The insured only has to pay on this type...

**math**

yeah i don't understand the wording but the diagram shows that each end of the entire rectangular pen is 2x

**math**

A farmer has 1000ft of fence and wishes to enclose the largest possible area that has four individual square pens bordered by a rectangular pen of a different width on each end. what are the overall dimensions of the fence area with maximum square footage? so far i thought i ...

**AP Government**

While political participation through voting in the US remains low compared to other democratic societies, Americans participate in their democracy in other ways. Explain.

**History of Science**

The one about Pascal's Law just gives sites about what it is, and its applications, not what Pascal himself did to discover it, which is what I need.

**History of Science**

Hey, Im doing a paper on Pascal's work in physics, but most of the sites that google gives me concern mostly about his religious life and only briefly talk about his scientific accomplishments. I need help finding a site that gives in depth detail of his experiments with ...

**Math**

match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjusted gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

**Math**

match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjested gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

**Math**

an eight character password must be six letters of the alphabet (not case-sensitive) followed by a two digit number. how many different addresses of this kind are possible

**Algebra**

Thank you ALan. I will copy the formual to use for another time!

**Algebra**

Find the slope of the line containing the points (-9, 1/2) and (-5, 1/2)

**Chem**

Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

**Honors Chemistry 101**

Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

**Algebra**

write an inequality that expresses when you would use a 20% off coupon for $5 off when you spend $20 or more.

**Algebra**

The formula R= -0.75t +385 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.7 min. Solve for t

**Algebra**

cIc<1020.28 Thanks!

**Algebra**

A metal stays solid at Fahrenheit temp below 1868.5 Determine (in terms of an inequality) those Celsisu temp, for which the metal stays solid. Use the formula F=9/5c+32

**Algebra**

Thank you Ms. Sue.

**Algebra**

A mt. with the base 11,554 feet below sea level rises 18,403 feet. What is the elevation above sea level of its peak? What is the elevation of the mt's peak?

**math**

Marcus and Allen are playing Rock/Paper/Scissors. The first one to win 10 times does not have to do the dishes. The score is now 9 to 7 in favor of Marcus. If ties are ignored and not counted, what is the probabilty Marcus will not have to do the dishes?

**math- odds**

thanks that helps!

**math- odds**

A bag contains 13 balls numbered 1 through 13. What are the odds in favor of selecting a ball that has an even number? Explain why?

**geometry**

Cool, thanks!

**geometry**

Two corresponding sides of similar polygons are in the ratio of 2 : 7. If the area of the smaller figure is 8 square meters, what is the area of the larger figure?

**Calculus**

Sketch the graph of a function that is continuous at x=5 but not differentiable at x=5.

**calculus**

sin(tan^-1(-7/3)) How do i evaluate this? answer has to be exact with no decimals.. calculators not allowed either..

**calculus**

I need to find the critical number of 4x^3-36x^2+96x-64 by factoring. Basically I need to know the zeros.

**Masters Cybersecurity**

a) Draw the bits for the four octets of the IP address of the first host on the first subnet. 10000000.10101011.00000000.00000001 b) Convert this answer into dotted decimal notation. 128.171.0.1 c) Draw the bits for the second host on the third subnet. 10000000.10101011....

**math**

25-7×2÷4+2

**11th grade**

The price of a sweater is $5 less than teice the price of a shirt. if four sweaters and three shirts cost $200, find the price of each shirt and each sweater.

**Algebra**

State whether each equation represents a linear, quadratic, or exponential function. Tell how you decided. 1. y = 9^3x + 4 2. 4x = 5 - y 3. y = 2x^2 + 23 – 14x

**Grammar and Composition**

Pittance is a noun, not an adjective

**science**

we need help finding the plant life cycle.

**Science**

15 ways Radio waves are used in a neighborhood?

**PSY210 APPENDIX G**

According to Sternberg, a person can experience eight general types of love. In the following table, a type of love as identified by Sternberg is in the left column. In the center column, write the combination of components that type of love demonstrates (intimacy, passion, or...

**Physics**

When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2*a. Find the weight of the ball, and the acceleration a. I know that 82 = ma +mg 92 = m2a + mg That logic is correct ...

**Biology**

Can proteins like GFP slow transcription of other essential cellular proteins?

**Statistics**

What is the probability of drawing an ace and a 10, Jack, Queen, or King from a deck of cards?

**3rd grade**

What is the least and greatest original numbers of 460 by Tens

**Math**

A quadrilateral is a ____ if and only if one pair of opposite sides are parallel and the other pair of opposite sides are congruent. Choices: Kite, Parallelogram, Rhombus, Square, or rectangle

**Math**

Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

**Math**

Three points D, E, and F are collinear. Is there only one plane that contains these three points?

**Math**

In a certain lottery, five different numbers between 1 and 30 inclusive are drawn. These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?

**Math**

Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

**Science**

Can anyone fill in the blank? An idea that explains the characteristics of living things? (2 words, 10 letters) Type of cell that helps an animal respond to its environment (5 letters) Plants have different types of cells for different _______. (5 letters)

**english grade 6**

what is a double consonant?

**math**

the m's cancel at some point in the equation

**math**

Consider a disk and spinner with four equal sectors marked with the numerals 1, 2, 3, and 4. What is the expected value for a single spin? If the spinner is spun three times, what is the expected value for the sum of the three numbers spun?

**math**

The FunTime Amusement park customer load during the summer follows a normal distribution with mean 450 and standard deviation 80. Determine the probability that the number of customers on any given day during the summer will be less than 420.

**math**

Please help me on this calculus question. I am getting the wrong diff. equation and so my answers to the remaining parts are wrong. ---------------------- A thermometer reading 85 degress outside is brought into a room with a constant temperature of 72 degrees. The rate of ...

**math**

Great! I finally get it! Thank you...

**math**

Can you please tell me if I did this right? Or am I way off: What are the odds in favor of getting at a head and a tail in a single toss of two coins? HH TT HT TH 2/4=1/2= 2:1

**Sociology- Modern Iran**

thanks. Oh and I'm having to a hard time figuring out what the Tehran Spring. I don't know if its the entire reform movement, or just the series of protests that occurred over the 2009 presidential election

**Sociology- Modern Iran**

I'm doing a presentation on how the youth in Iran respond to the laws and regulations of the Islamic Theocratic regime. However, Im having trouble finding good sources, especially about specific social injustices that are occurring, like what can't they do. So if you ...

**Math**

Identify the misuse or misrepresentation of statistics: “60% of all college students watch less than 2 hours of television per day.” This conclusion was reached by a college student after she had questioned 520 randomly selected students exiting the library. What is ...

**Math**

Cool. Thanks for the help!

**Physics**

We consider a man of mass m = 84 kg as shown in the figure below using crutches. The crutches each make an angle of θ = 26degrees with the vertical. Half of the person's weight is supported by the crutches, the other half is supported by the normal forces acting on ...

**College Physics**

Box M2 sits atop M1. (M1=25kg M2=15kg). The coefficient of friction between boxes and between M1 and the ground is Uk=.4 and Us=.5. I found that 353N is the maximum force you can apply to box 1 so that box 2 doesn't slip off. Now it asks for the acceleration of M1 and M2 ...