Friday

July 3, 2015

July 3, 2015

Total # Posts: 1,005

**science**

A force of 16.0 newtons is sufficient to set a box that is at rest into motion. If the coefficient of static friction is 0.380, what is the normal force acting on the box?
*June 24, 2015*

**biochemistry**

anyone by any chance know what it means for a protein to be "n-terminally truncated"? I know that the n-terminus is supposed to be like one end of the protein chain...
*June 14, 2015*

**math**

A motor pulley 8 inches in diameter and runs at 450 revolutions per minute.Find the diameter of the fan if the RPM's is 1,400? Round to the nearest hundredth.
*June 8, 2015*

**Computer Lit**

Does this look good? It's about Piracy and my position. Computer Piracy What is piracy? Are there pirates running around on the Internet? Piracy is theft, you’re stealing copyrighted work. You’re not stealing if you buy a book, a song on iTunes, or a movie off of...
*June 4, 2015*

**Spanish**

thank you
*May 27, 2015*

**Spanish**

Hello how would I say"There are plants around the lake" in spanish.
*May 27, 2015*

**Pseudocode**

Produce the algorithm for the problem above [this will include five “get” statements to input item 1, item 2, item 3, item 4 and item 5; three math statements to process the subtotal, tax and total; and three “display” statements to output the subtotal, tax...
*May 11, 2015*

**Chemistry**

My teacher is an idiot and wont teach our class and im panicking so please help anyone. Given the following equations enthalpy values, determine the heat of reaction (kj) at 298k for the reaction: B2H6(g)+6Cl(g)=2BCl3(g)+6HCl(g)
*May 10, 2015*

**10th grade physics**

What speed must a bucket of water have to complete a circle with a radius of 1.2 m without spilling any water? My answer: this seems to be an incomplete question, not solvable without the weight of the bucket
*May 1, 2015*

**English vocab**

If you receive someone's mail, then you seize it before the person receives it; however, it is illegal to take someone's mail, so the police might attempt to arrest you and put you in jail.
*March 27, 2015*

**English**

Can you find the word passage which matches the meaning given. (a) knocked about, pushed off balance (b) another choice
*March 25, 2015*

**Physics**

A 130kg mail bag hangs by a vertical rope 3.9m long. A postal worker then displaces the bag to a position 2.2m sideways from its original position, always keeping the rope taut.
*March 21, 2015*

**Physics**

A 130kg mail bag hangs by a vertical rope 3.9m long. A postal worker then displaces the bag to a position 2.2m sideways from its original position, always keeping the rope taut.
*March 21, 2015*

**Math**

Hi! I need help with this question. Thanks! Directions: Try to find the number of solutions for the following system of equations then determine if it is Dependent, Inconsistent or Consistent. -3x-2y=6 x=-2-2/3y
*March 18, 2015*

**Spanish**

I'm doing a project. Thats my title which one would be better "Mi futuro hogar" or "Mi futura casa"
*March 14, 2015*

**Spanish**

ok thank you
*March 14, 2015*

**Spanish **

Hello how do I say "my future house" in spanish. I didnt want to use google translate because of the grammar.
*March 14, 2015*

**physics**

A chair of mass 14.0kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 40.0N that is directed at an angle of 43.0∘ below the horizontal and the chair slides along the floor.
*March 14, 2015*

**Math**

A bus can cover a distance of 6 miles in 1 gallon of gas. The cost of gas is $4 per gallon. What will be the cost of gas used in driving the bus for 96 miles?
*March 12, 2015*

**projectile motion physics**

There is a minimum angle above the ground such that if the ball is launched below this angle, it can never clear the bar, no matter how fast it is kicked. What is this angle?
*March 8, 2015*

**projectile motion physics**

Imagine the ball on the left is given a nonzero initial speed in the horizontal direction, while the ball on the right continues to fall with zero initial velocity. What horizontal speed vx must the ball on the left start with so that it hits the ground at the same position as...
*March 8, 2015*

**physics**

wo vectors A⃗ and B⃗ have magnitude A = 3.02 and B = 3.03. Their vector product is A⃗ ×B⃗ = -5.05k^ + 2.06 i^. What is the angle between A⃗ and B⃗ ?
*March 7, 2015*

**Physics**

Kaitlin is going off to her physics class, jogging down the sidewalk at a speed of 3.30m/s . Her husband Scott suddenly realises that she left in such a hurry that she forgot her sandwich, so he runs to the window of their apartment, which is a height 35.0m above the street ...
*March 7, 2015*

**Physics**

A car comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 19.5m above the river, while the opposite side is a mere 1.6m above the river. The river ...
*March 7, 2015*

**Physics**

A 7500kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.20m/s2 and feels no appreciable air resistance. When it has reached a height of 595m , its engines suddenly fail so that the only force acting on it is now gravity. [1]What is ...
*March 7, 2015*

**Geometry**

I need some assistance, here's the question. 4. What are the values of x and y? A. x=9/4,y=3/4 B. x=9/4,y=15/4 C. x=15/5,y=5/4 D. x=3/4,y=15/4 I'm thinking it's either A or B, but I don't know for sure. Can anyone help?
*February 25, 2015*

**Math**

How many years old is a person if her age now is equal to her age in 3 years x 3, less 3 times her age 3 years ago?
*February 23, 2015*

**Physics**

In a particular crash test, an automobile of mass 1295 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 25 m/s and 1.5 m/s, respectively. If the collision lasts for 0.11 s, find the magnitude of the ...
*February 1, 2015*

**algebra**

The line l_1 passes through the points (3,-3) and (-5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
*January 24, 2015*

**Math**

Where did you get the two from in (3/2)?
*January 10, 2015*

**Math**

you know that 8x = 5y you know that 3y=14z since 5 = (5/3)*3, 5y = (5/3)*(3y) so, 5y = (5/3)(3y) = (5/3)(14z) = (70/3)z now you have 5y, which is the same as 8x. You want 12x. since 12 = (3/2)*8, 12x = (3/2)*8x. 12x = (3/2)(8x) = (3/2)(5y) = (3/2)(70/3)z = (70/2)z = 35z Can ...
*January 10, 2015*

**math**

If ten crates arrive at the receiving dock, and each crate contains 7 boxes of decorative vases with 12 vases per box; how many vases are in each crate?*
*December 18, 2014*

**Math**

5) A car manufacturer has manufacturing plants in 3 major cities. Below are the daily amounts of cars produced per plant for 3 different model types. (matrix A) Model X Model Y Model Z Plant A 12 10 0 Plant B 4 4 20 Plant C 8 9 12 Due to wage increases, the April profits are ...
*December 12, 2014*

**Math**

The relative value of currencies fluctuates every day. When this problem was written, one Netherland Antillean Guilder (Used on the Caribbean island of CuraÇao) was worth .558659 US dollar. a. Find a function that gives the U.S. dollar value f(x), of x Netherland ...
*December 12, 2014*

**Math**

2) A car dealership advertises a 15% discount on all its new cars. In addition, the manufacturer offers a $1000 rebate on the purchase of a new car. Let x represent the sticker price of the car. a. Suppose only the 15% discount applies. Find a function f that models the ...
*December 12, 2014*

**Physic**

thank you so much !
*December 11, 2014*

**Physic**

A grenade that is falling vertically explodes into two equal fragments when it is at a height of 2000 m and has a downward velocity of 60 m/s. Immediately after the explosion one of the fragments is moving downward at 80 m/s. Find the position of the second fragment and the ...
*December 11, 2014*

**algebra**

ᕦ( ͡° ͜ʖ ͡°)ᕤ
*December 5, 2014*

**Math**

) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after ...
*December 4, 2014*

**Math**

A man is running around a circular track that is 200m in circumference. An observer uses a stopwatch to record the runner’s time at the end of each lap, obtaining the data in the tale below. a. What was the man’s average speed (rate) between 68 s and 152 s? b. What ...
*December 4, 2014*

**physics**

A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.30 m × 2.22 m. On a certain day, the indoor temperature is 22°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.) What is...
*December 4, 2014*

**Visual Basic**

debugging exercise: Private Sub btnItemNumber_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnItemNumber.Click Dim decCost As Decimal Dim intCount As Decimal decCost = Convert.ToDecimal(txtCost.Text) Inventory(decCost, intCount) End Sub Private Sub...
*December 3, 2014*

**Math**

Diffrentiate implicitly with respect to x. Solve for y' 3xy - 2x^2 + 5y^2 =7
*November 29, 2014*

**earth science**

Which of the following statement is False: A.Cinder cones are built from ejected lava fragments and are usually less than 300 meters high B.Calderas are large collapsed depressions having more or less circular form C.Most volcanoes are fed magma through short conduits called ...
*October 29, 2014*

**Math**

1) An aerobics class is being offered at the ABC body gym. Nonmembers pay $4 per class while member pay a monthly fee of $10 plus $2 per class. a. Create a linear system to represent the two options. b. At how many classes will the cost be the same? What is that cost? c. When ...
*October 13, 2014*

**Math**

Find three pairs of numbers for which the LCM (least common multiple) is the product of the two numbers; The pairs and LCMs are: 8 and 12: 24; 3 and 15: 15; 7 and 11: 77; 9 and 10: 90; 24 and 36: 72; 20 and 25: 100; 14 and 42: 42; 30 and 12: 60
*September 17, 2014*

**math**

thank you
*September 17, 2014*

**math**

(c+2)^2 -1 factor completely (c+2)(c+2) -1 i dont know what to do next. Can you help me please thank you
*September 17, 2014*

**math**

The differnce of two numbers is 2 the difference of their squares is 20 find the numbers
*September 15, 2014*

**Math**

12 cards are drawn with replacement from an ordinary deck of 52 cards. What is the probability that 4 queens of hearts, 4 aces of spades, and 4 kings of clubs are drawn?
*September 14, 2014*

**algebra**

thank you very much
*September 8, 2014*

**algebra**

how need help with this question subtract 7y^2 -3y from 4y^2 + 2y isthe answer 3y^2 - 5y thank you
*September 8, 2014*

**MATH**

what is th lomgest multiplication combination you found for each of these numbers
*September 8, 2014*

**Root Words**

Which of the following root words means “more than one”? A. Junct- B. Ambi- C. Ject- D. Terr- B?
*September 3, 2014*

**Definitions**

C?
*September 1, 2014*

**Definitions**

Speculation A. Discovery B. Evidence C. Hypothesize D. Analysis D?
*September 1, 2014*

**Definitions**

i think b . subculture
*September 1, 2014*

**Definitions**

A smaller group of people within a larger group A. Culture B. subculture C. Demography D. Population None of the definitions say anything like the question please help
*September 1, 2014*

**Definitions**

People joined together in business. A. Proprietorship B. Ownership C. Partnership D. Investment I got C
*September 1, 2014*

**vocabulary**

Ok. Its B
*August 29, 2014*

**vocabulary**

Denotative and Connotative A. Synonyms B. Antonyms C. Neither I think A?
*August 29, 2014*

**health**

thanks again
*August 27, 2014*

**health**

What are common causes of short-term stress? A. Too much to do in not enough time B. Lots of little problems in the same day C. Getting lost D. All of the above D?
*August 27, 2014*

**health**

Thankyou :)
*August 26, 2014*

**health**

Then A?
*August 26, 2014*

**health**

How do you lose weight? A. By using up more calories than you take in B. By using up more money on diet programs and pills C. By using up less energy than you take in D. By using up less calories than you take in D?
*August 26, 2014*

**health**

Is it b?
*August 19, 2014*

**Math**

For a given right, side a = 76.4 feet and side b = 39.3, what is the measure of angle b to the nearest degree
*August 16, 2014*

**physics**

A 900kg car strikes a huge spring at a speed of 22m/s, compressing the spring 4.0m How long is the car in contact with the spring before it bounces off in the opposite direction? I found the spring constant to be 27225, which i know is right, but am having trouble with this ...
*July 29, 2014*

**physics**

A soccer ball travelling at 15 m/s [E] bounces off of a goal post and ends up moving 12 m/s [S 30¡Æ E]. If the ball was in contact with the post for 0.10 seconds, calculate the acceleration of the ball.
*June 27, 2014*

**Calculus**

find the area of the region inside the limacon r= 8 + 4sin(theta) HElp!! if you can show steps, i'd be greatful
*June 2, 2014*

**math**

i think its b
*May 28, 2014*

**English III**

If the writer paraphrases an opinion that she has read rather than reached independently, she is not required to cite the source. True or False?
*May 27, 2014*

**sci207**

How would the "weather" be affected if the water was at a decreased temperature?
*May 26, 2014*

**Algbera**

which angle is coterminal with an angle measuring 130 degrees? 230 130 -490 490 none of these
*May 21, 2014*

**math**

In which quadrant does the terminal side of the angle with measure -245 degree lie? Quadrant I Quadrant IV Quadrant III Quadrant II None
*May 21, 2014*

**english**

I need to write a short couplet about growing up it needs to start with "IF"
*May 14, 2014*

**personal finance**

Bryan earns $6.25 per hour plus 1.75% commission on all goods sold. One week he worked 37 hours and sold $6,500 worth of goods. What were his weekly earnings?
*May 11, 2014*

**calculus**

Find the interval of convergence of the series. ∑(sinx/10)^n
*May 7, 2014*

**calculus help**

find the derivative of the function. integral cos(x) to sin(x) ((ln(8+3v))dv)
*May 1, 2014*

**Calculus Help **

Find the values of c such that the area of the region bounded by the parabolas y = 4x^2 − c^2 and y = c^2 − 4x^2 is 256/3. (Enter your answers as a comma-separated list.)
*May 1, 2014*

**Statistics**

Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
*May 1, 2014*

**Statistics**

Thanks - that is what I picked.
*May 1, 2014*

**Statistics**

A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
*May 1, 2014*

**Statistics**

A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
*April 30, 2014*

**Statistics**

Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
*April 30, 2014*

**Statistics**

Tukey's HSD test is used a. prior to performing a one-way ANOVA. b. to determine the amount of difference between group means. c. to determine whether the overall difference among groups means is significant. d. to locate "true" differences after a significant F
*April 30, 2014*

**Statistics**

Given: The difference between two dependent means is statistically significant. The reason behind this outcome can be difficult to determine when a. population standard deviations are estimated from samples. b. sample size is large. c. a large value of t is obtained. d. ...
*April 30, 2014*

**Statistics**

Tukey's HSD test is used a. prior to performing a one-way ANOVA. b. to determine the amount of difference between group means. c. to determine whether the overall difference among groups means is significant. d. to locate "true" differences after a significant F
*April 29, 2014*

**Statistics**

Given: The difference between two dependent means is statistically significant. The reason behind this outcome can be difficult to determine when a. population standard deviations are estimated from samples. b. sample size is large. c. a large value of t is obtained. d. ...
*April 29, 2014*

**Math Help!**

-If one fish is twice as long as another,how do their weights compare? -If one fish is as heavy as another, how do their lengths compare? L- 31,33,35,37,39 W- 250,308,363,420,520
*April 29, 2014*

**Statistics**

In order to critical values of t to be precisely correct for testing Ho: u1-u2=0 using small independent samples, we must assume a. ó1 = ó2 b. normality of populations c. u1 = u2 d. all of the above.
*April 29, 2014*

**Statistics**

In one-way ANOVA involving three groups, the alternative hypothesis would be considered correct if, in the population, a. all means were equal. b. two means are equal but the third is different. c. all three means have different values. d. either (b) or (c) above is true.
*April 29, 2014*

**Statistics**

Professor Casey performs a t test of Ho: u1 - u2=0 using a-.01 and finds a significant difference between Xmean1 and Xmean2. From this we can infer. a. a large difference between u1 and u2. b. an important difference betwee u1 and u2. c. u1 and u2 to be unequal. d. all of the ...
*April 29, 2014*

**Math-Help**

A manufacturer has determined that pro t P (in dollars) is a quadratic function of dollars per month a spent on advertising. The relationship is given by p=1+50a-0.1a^2 if a is at most 500 dollars per month -How much should be spent on advertising if pro t is to be a maximum...
*April 28, 2014*

**Math-Help**

A rock is tossed straight up into the air. The height h (in feet) t seconds after it is tossed is given by the function: h(t)=-16t^2+100.4t+5.1 (a) Make a table of values for 0 to 10 seconds. (b) Graph the function. (c) What is the initial height of the rock? (d) When did the ...
*April 28, 2014*

**College Chemistry**

If 3.00 moles of NaCl were mixed with 0.9 L of 0.5 M of AgNO3, how many moles of solid would form? Include the formula for the solid.
*April 25, 2014*

**Statistics**

Prof. C is studying a population of the elementary school pupils in a school district with data on all its children. Another prof. suggests he calculate a confidence interval to estimate the mean age of the children. Prof C responds that it is not necessary. Explain why Prof. ...
*April 23, 2014*

**Stats **

Of 43 bank customers depositing a check, 18 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (b) Check the normality assumption.
*April 18, 2014*

**Stats**

Find the 95 percent range for the sample mean, assuming that each sample is from a normal population. a. ì = 200, ó = 12, n = 36 b. ì = 1,000, ó = 15, n = 9 c. ì = 50, ó = 1, n = 25
*April 18, 2014*