Thursday

January 29, 2015

January 29, 2015

Total # Posts: 437

**physics**

A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors? (in cal) tried everything but got nothing.
*December 17, 2012*

**math**

A number has 2 digits. The digit in the tens place is 4 times bigger than the digit in the ones place. If the product of the digits is 16, what is the number ?
*December 9, 2012*

**calculus**

as an answer i used x as the width of the rectange (and diameter of the half circle)and used h as the height of the rectangle. i got the answer of x=.409155 and h= 25.4741. how did i do?
*December 7, 2012*

**calculus**

Oh, i apologize if this gives the impression I want you to solve it for me. I would just like to know where to start this from, then I can take it from there.
*December 7, 2012*

**calculus**

I really hate to dump a problem like this on the teachers here, but I really need to get an answer to this. Thank you and I'm sorry. A Norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window. Find the dimensions of a Norman ...
*December 7, 2012*

**Chemistry**

Thanks a lot.
*December 6, 2012*

**Chemistry**

Using Dimensional Analysis, how many moles of sodium is 32.5 g of sodium? Could you please tell me the steps on how to solve this I am stumped.
*December 6, 2012*

**Calculus**

what is the differential of (217)^1/2
*December 5, 2012*

**English**

I have completed 24 classes all by myself in Ashworth. I have a deadline for December 8, 2012 to finish. I was sick in he hospital for the past 6 months. All I need is that to graduate
*December 5, 2012*

**English**

Does anyone have the Answers for Ashworth English 3 please? Anyone!
*December 5, 2012*

**ib english**

I need help writing an essay on the hysteria and how it relates to the red scare communism hysteria.
*December 4, 2012*

**Calculus**

find the point on the graph of the function that is closest to the given point: f(x)=(x+1)^2 (5,3)
*December 2, 2012*

**7th grade science Ms. Sue please**

1. What steps in meiosis are similar to steps of mitosis? (1 point) (0 pts) meiosis I prophase (0 pts) meiosis I anaphase (0 pts) meiosis I metaphase (1 pt) all of the above 1 /1 point 2. A cell that has two of every kind of chromosome is _____. (1 point) (0 pts) haploid (1 pt...
*November 15, 2012*

**physics**

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?
*November 13, 2012*

**physics**

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?
*November 13, 2012*

**Math**

Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144 power) (mod 17) ...
*October 29, 2012*

**math**

Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144 power) (mod 17) ...
*October 24, 2012*

**math**

Susan is 5 years older than her sister jennifer the sum of their ages is 51 write and equation and find the ages of both sisters
*October 24, 2012*

**Math**

Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144 power) (mod 17) ...
*October 22, 2012*

**Math**

How many integers between 200 and 500 inclusive leave a remainder 1 when divided by 7 and a remainder 3 when divided by 4? Find the smallest positive integer that leaves a remainder 5 when divided by 7, a remainder 6 when divided by 11, and a remainder 4 when divided by 13.
*October 19, 2012*

**Math**

Which Statements of congruence are true and which are false and why? 177 _= 17 871 _= 713 1322 _= 5294 5141 _= 8353 13944 _= 8919 67 x 73 _= 1 x 3 17 x 18 x 19 x 20 _= 4! 83 (144 power) _= 15 (144 power) Their not equals signs...they are three lines on top of one another.
*October 19, 2012*

**Northwest H.S**

Physics: A car is parked on an icy hill inclined at 10°, when it begins to slide. What is the car's speed at the bottom of the 155-m hill?:
*October 16, 2012*

**math**

Let s be the sum of ten consecutive integers and let p be their product. Explain why the units digit of P-S must be 5.
*October 10, 2012*

**math**

Brandon is reading a book Flatland and notices that the product of the numbers of the two pages his book is open to has a units digit of 6. What is the units digits of the sum of the two pages numbers?
*October 10, 2012*

**Math**

The number 57,733 contains two sets of digits in which one digit is ten times as great as the other. What are the values of the digits in each set?
*October 1, 2012*

**Math**

In the number 7,725 which places contains digits where one digit is ten times greater as the other?
*October 1, 2012*

**7th grade science Ms. Sue please help if you can**

1: cold fronts 2: cloudy weather 3: warm front 4: all of the above 5: heights Took the same test
*September 28, 2012*

**math**

Sarah is making poster by hand to advertise her school play, but her posters are not the same length as a standand sheet of paper (the width is the same, though). She has three and a half sheets of paper left over, which she says is enough to make two and one third posters. ...
*September 26, 2012*

**Ap Chemistry**

Re has two natural occuring isotopes 185 Re and 187 Re with an average atomic mass of 186.207 amu. Re is 62.60% 187Re and the atomic mass of 187Re is 186.956 amu. What is the mass of 185 Re
*September 25, 2012*

**math **

wendy is thinking of a 7-digit number the digit in the hundred thousands place is twice in the tens place .the digit in the millions place.which could be wend's number
*September 12, 2012*

**physics**

A 0.330 kg bar is placed on a pair of frictionless rails separated by a distance of 1.60 m and located on an inclined plane that makes an angle of 29.0° with respect to the ground. The total resistance of the circuit remains at a constant 1.8 Ω and a uniform magnetic ...
*August 20, 2012*

**A&P**

If your metabolic consumption of oxygen is 1500ml/min, what is the P02 of venous blood?
*July 30, 2012*

**Chem**

If your metabolic consumption of oxygen is 1500ml/min, what is the P02 of venous blood?
*July 30, 2012*

**writing**

There are... ;)
*July 30, 2012*

**statistics**

Assume that women's heights are normally distributed with a mean=63.6 in. and standard deviation = 2.5 in. a) To be eligible for the US Marine Corps, a woman must have a height between 58 in. and 73 in. Find the percentage of women who satisfy that requirement. b)If the ...
*July 29, 2012*

**statistics**

this is to mathmate...this is jimmy and you answered by questions on random sample and probability (better business bureau question)..i greatly appreciate your help but i do not understand part b and d answers..i am totally lost on this whole question
*July 22, 2012*

**statistics**

The Better Businesss Bureau reports that they resolve 70% of the consumer complaints they receive. a) if a random sample of 5 consumer complaints is selected, what is the probability that all 5 were resolved? b)if a random sample of 5 consumer complaints is selected, what is ...
*July 22, 2012*

**algebra1**

subtract: 7-z/z-5 - 4z-9/5-z
*June 29, 2012*

**English**

Someone please help me! I know it long but I need help. ASAP. What's the answer! Discuess whether either party was justified in his/her behavior. What are the effects of benevolent lies, silence, equivocation, or hinting, as alternatives to disclosing what could be hurtful...
*June 27, 2012*

**speech**

Oh okay sorry about that. I did not know. Well he is the story then. Is misleading your spouse fraud or tact? When their marriage of more than a decade in divorce, Anaheim banker Ronald Askew sued his ex-wife for fraud because she admittedly concealed that fact that she has ...
*June 27, 2012*

**speech**

Read "is misleading your spouse fraud or tact?" In looking out looking in 13th edition(p.329). Discuess whether either party was justified in his/her behavior. What are the effects of benevolent lies, silence, equivocation, or hinting, as alternatives to disclosing ...
*June 27, 2012*

**Algebra**

Could you help explain how T can put the number of pipes over the time to solve this?? I'm afraid I don't understand.
*June 26, 2012*

**Algebra**

There is a water tank with a drain of an unknown size that is always open. There is a series of input pipes above it which are all the same size. When 4 pipes are on, it takes 6 hours to fill. When 3 pipes are on, it takes 10 hours to fill. How many pipes would it take to fill...
*June 26, 2012*

**Physical Sicence**

1.0 gram of glass will rise 20.0°C when _____ calories of heat are applied.
*June 20, 2012*

**Physics**

I think your solution tells us when the spring moves 18 cm, not 9 cm. Thank you, though. This was really useful.
*June 2, 2012*

**Physics**

In turns out that for b), instead of using (.27^2 -0.09^2), we have to use (.27^2-0.18^2).
*June 2, 2012*

**Physics**

A 0.53-kg mass is attached to a horizontal spring with k = 106 N/m. The mass slides across a frictionless surface. The spring is stretched 27 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
*June 2, 2012*

**algebra 1**

Your mom
*May 14, 2012*

**Chemistry**

1s2 2s2 2p6 3s2 3p5 - To get to +7 the chlorine atom loses its seven valence electrons, but it only has room for one more in the p sublevel to get to –1.
*May 13, 2012*

**English 2**

the answer is C
*May 2, 2012*

**Chemistry questions**

thank you Bob!
*May 2, 2012*

**Chemistry questions**

1) Calculate the mass of NaHCO3 required to generate 50mL of CO2, at 1 atm. pressure and 25*C. Do I need to use PV=nRT? where for n it will be both my n's from C and O2 together? 2) Solubility of CO2 in water at 25* is 0.145g in 100mL. Assuming the solubility of CO2 is the...
*May 2, 2012*

**math**

P = a + b + c Where P is perimeter a, b and c are all 3 sides
*May 2, 2012*

**physics**

you need more information than that, at least a mass or an acceleration because Newton's second law: F=ma
*May 2, 2012*

**physics**

an object going around a corner is affected by centripetal acceleration.
*May 2, 2012*

**physics**

just google adolescence and you'll have many definitions
*May 2, 2012*

**math URGENT**

1/2 * 1/3 = 1/6
*May 2, 2012*

**Maths**

11 + 9 = 20, so 11/20
*May 2, 2012*

**Calculus**

A particle is moving with acceleration a(t) = 30 t + 12. its position at time t =0 is s(0) = 11 and its velocity at time t =0 is v(0) = 16. What is its position at time t = 8?
*April 26, 2012*

**Math**

x+7/8=x+8/9 -7 -7 ____ x /8=x+1/9 *8 *8 ____ x= 72
*April 24, 2012*

**MATH**

find a number that is 15 more than 4 times it's oppisite
*March 6, 2012*

**Chemistry**

Arrange the species O2, O2^+, O2^-, and O2^2- in order of increasing O-O bond length.
*March 4, 2012*

**chemistry**

Arrange the species O2, O2^+, O2^-, and O2^2- in order of increasing O-O bond length.
*March 4, 2012*

**chemistry**

How do I construct an energy level diagram for the hydrogen atom. I have all the energies, but I do not know how to make the diagram.
*March 3, 2012*

**Calculus based physics**

A particle travels along a path described by the function y=0.2x^3. The exponent of velocity is given by vx=(5t^2)ft/s. When t=0, x=y=0, find the particle's distance from the origin and the magnitude of its acceleration when t=1s.
*February 27, 2012*

**chemistry**

You are a chemist requested to review and analyse certain debris found on thebottom of aboot found in a crime scene. The debris contains metal fragments. If you identify the metal fragments---it will help the detctive identify the locations traveled by the person who did the ...
*February 26, 2012*

**chemistry**

You are a chemist requested to review and analyse certain debris found on thebottom of aboot found in a crime scene. The debris contains metal fragments. If you identify the metal fragments---it will help the detctive identify the locations traveled by the person who did the ...
*February 26, 2012*

**Chemistry**

A line in the infrared region of the hydrogen spectrum has a wavelength of 1.875 micro meters. What is the transition responsible for this wavelength?
*February 25, 2012*

**chemistry**

A line in the infrared region of the hydrogen spectrum has a wavelength of 1.875 micro meters. What is the transition responsible for this wavelength?
*February 25, 2012*

**chemistry**

Al(NO3)3 + NH3 --> ?
*February 24, 2012*

**English**

What is the subject and verb in the sentence below: The company offered a fifty dollar rebate on every energy efficient refridgerator bought during the month of June.
*February 16, 2012*

**math**

aaron is skipping stones across a pond.(A "skip"is a short bounce in the water.)The first stone skips 1 time, the second skips 2 times, the third stone skips 4 times,and the fourth stone skips 8 times. if this patten continues,how many total skips will the 10th stone...
*February 5, 2012*

**math**

aaron is skipping stones across a pond.(A "skip"is a short bounce in the water.)The first stone skips 1 time, the second skips 2 times, the third stone skips 4 times,and the fourth stone skips 8 times. if this patten continues,how many total skips will the 10th ...
*February 5, 2012*

**math**

aaron is skipping stones across a pond.(A "skip"is a short bounce in the water.)The first stone skips 1 time, the second skips 2 times, the third stone skips 4 times,and the fourth stone skips 8 times. if this patten continues,how many total skips will the 10th stone...
*February 5, 2012*

**math**

each of the 15 student council members of Blakemore Elementary School is responsable for telling exactly 2 other students about the upcoming school pep assembly. Each of those 2 is then responsable for telling 2 other students. It takes 15 minutes for each round of stundents ...
*February 5, 2012*

**chemistry**

In comparing the phase diagram for water with that of a solution of sugar in water, all of the following decrease except a) the vapor pressure b) the boiling point c) the freezing point d) the triple point
*February 3, 2012*

**chemistry**

so b?
*February 3, 2012*

**chemistry**

When 7.50 grams of iodine (I2) is added to 48.7 grams of carbon tetrachloride (CCl4), the iodine dissolves and a solution is formed. The weight percent of the iodine in the solution is a) 13.3 % b) 15.6 % c) 60.7 % d) 2.96 % e) 86.0%
*February 3, 2012*

**multiplication and arrays**

strategy practice explain hoe you can multiply 3x24 by using arrays. then give the product.
*February 1, 2012*

**math/estimating products**

an arena seats 7,893 people.The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?
*January 31, 2012*

**algebra**

How would learning how to solve logical problems, help you in your real life?
*January 30, 2012*

**algebra**

Suppose that a quadratic equation had two x-intercepts. How could you use the intercepts to find the vertex?
*January 30, 2012*

**algebra**

When using the quadratic formula, why is only necessary to examine the discriminant to determine if the equation only has real number solutions?
*January 30, 2012*

**Science**

A traffic light turns green, a car accelerate from rest and cover 10m in 4s . What is the acceleration of the car , assume uniform acceleration
*January 30, 2012*

**algebra**

When using the quadratic formula, why is only necessary to examine the discriminant to determine if the equation only has real number solutions?
*January 30, 2012*

**math**

If sin(θ) = -1/√2, find sin2(θ). (Recall that sin2(θ) means (sin(θ))2.) sin2(θ) =
*January 27, 2012*

**Trig**

tan(θ) = a (a ≠ 0), find cot(θ).
*January 27, 2012*

**Math**

Point G is the centroid of triangle ABC. Use this given information to find the value of X. CG =3x+7 and CE= 6x FG = x+8 and AF = 9x - 6 BG = 5x -1 and DG = 4x -5
*January 18, 2012*

**english**

I'd really appreciate if someone could check my answers for me. Thank you.
*January 9, 2012*

**english**

My answers are marked with an *.
*January 9, 2012*

**english**

1)In "The Love Song of J. Alfred Profrock," what mood is created by a setting in which the central character is concerned with the direction of his life? a)cheerful and exhilarating b)introspective and indecisive* c)honey and reassuring d)impersonal and chilling 2)...
*January 9, 2012*

**English**

I did check my answers with * beside each one.
*January 9, 2012*

**Physics**

*thanks
*January 9, 2012*

**Physics**

ohhh I see, thank Bob!
*January 9, 2012*

**Physics**

Hello, During a lab where you race 2 cars downward on a 30* angle slope, we got graphics of the different energies in play. (Gravitational, kinetic and Total in depending on time). Afterwards, we need to answer this question: Calculate non-conservative work exerted by the ...
*January 9, 2012*

**Computing**

I need help with my hp530 laptop.i reloaded the os to winxp.the agp texture acceleration is disabled how can i fix these?thanks
*January 9, 2012*

**Canadian History**

1. Who gave Jim Sinclair a crucial piece of advice early in his career? 2. What (or who) connects the current drug store chain, London Drugs, to the gold rush era of British Columbia?
*December 5, 2011*

**math**

make up a set of at least twelve numbers that has the following landmarks. minimum:50 median:54 maximum:57 mode:56
*December 2, 2011*

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