Friday

December 9, 2016
Total # Posts: 1,275

**Physics**

A hydraulic lift is used to jack a 780 kg car 15 cm off the floor. The diameter of the output piston is 15 cm, and the input force is 160 N. a)What is the area of the input piston (in m^2)? b)What is the work done in lifting the car 15 cm? c)If the input piston moves 13 cm in ...

*November 10, 2012*

**Physics **

Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 1.6000kg when weighed in air.

*November 10, 2012*

**physics**

A newspaper carrier on delivery route travels 200.-m South-West and 300.-m West. What is the direction of the displacement

*November 8, 2012*

**physics**

A newspaper carrier on delivery route travels 200.-m South-West and 300.-m West. What is the magnitude of the displacement?

*November 8, 2012*

**accounting**

Analyze and record, in the form of T Accounts, Mr. James' transactions: Jan 1: Amount invested in the business $10,000 Jan 7: Bought equipment for $500 Jan 9: Bought office furniture with $2,000 cash Jan 10: Bought materials with $2,000 cash Jan 17: Sold part of equipment...

*November 6, 2012*

**Chemistry**

convert 458166 atoms of H20 to moles

*November 6, 2012*

**pre algebra**

A woman who is 5feet 4 inches cast a shadow that is 6 feet tall. How long of a shadow would be cast by a man who is 6 feet 8 inches tall

*November 5, 2012*

**Algerbra**

George pays a flat amount for the first 200 minutes plus so much for each additional minute on his cellular phone each month. Last month it cost him $33.78 for 244 minutes of use. The previous month it cost $38.94 for 287 minutes of use. What are the flat rate and per minute ...

*November 2, 2012*

**Math**

Jared can paddle his canoe 1 mile upstream in 1 hour, but it takes only a half hour to paddle back the same distance. Find the speed of water. (Hint: d=rt and the rate or canoe speed, depending on which way he is going.)

*November 2, 2012*

**Calc**

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0<A<pi/2 Find: A= pi/4? B=??

*October 22, 2012*

**English**

About what?

*October 22, 2012*

**Math**

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0<A<pi/2 Find: A= pi/4? B=??

*October 22, 2012*

**Math**

Show how to make one addend a ten. Complete the new addition sentence. 38 + 25=? ---- + ---- =

*October 15, 2012*

**algebra**

2st squared -s squared. S=4 t=8

*October 15, 2012*

**geometry**

If the endpoints of the diameter of a circle are (3, 1) and (6, 5), find the length of the diameter.

*October 14, 2012*

**Physics**

Takeoff Speed= Range=(initial velocity^2 * Sin (2 theta))/g 11m = (V0^2*sin(36))/(9.8) V0= sqrt((11*9.8)/(sin36)) V0=13.54

*October 13, 2012*

**o Chem**

a sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer. b.if the same sample were run several days later with theconditions as nearly the ...

*October 9, 2012*

**math**

The function f(x) = ax^3-x^2+bx-24 has three factors. Two of these factors are x-2 and x+4. Determine the values of a and b, and then determine the other factor

*October 7, 2012*

**math**

An open topped box can be created by cutting congruent squares from each of the 4 corners of a piece of cardboard that has dimensions of 20cm by 30cm and folding up the sides. Determine the dimensions of the squares that must be cut to create a box with a volume of 1008cm^3

*October 7, 2012*

**math**

An open box is made from a rectangular piece of cardboard, with dimensions of 24 cm by 30 cm, by cutting congruent squares from each corner and folding up the sides. Determine the dimensions of the squares to be cut to create a box with a volume of 1040 cm ^3

*October 6, 2012*

**world geography**

economics status, social status.

*October 4, 2012*

**world geography**

What processes cause changes in settlement patterns?

*October 4, 2012*

**world Geography**

Culture, age, money.

*October 4, 2012*

**world Geography**

What social factors determine population trends and demographics of a region?

*October 4, 2012*

**World Geography**

What human and physical features influence the size and distribution of settlements?

*October 4, 2012*

**World Geography**

Work, distance, stores

*October 4, 2012*

**World Geography**

What economic factors determine population trends and demographics of a region?

*October 4, 2012*

**World Geography**

The economy if its bad..not able to survive there, social status.

*October 4, 2012*

**World Geography**

What processes cause changes in settlement patterns?

*October 4, 2012*

**World Geography**

Push factors are those that encourage a migrant to leave his place of residence. Includes cost of living, personal safety, environmental catastrophes or more minor issues suc as weather and climate. Pull factors are those that attract a migrant to a country, such as the ...

*October 4, 2012*

**World Geography**

How do push and full factors and physical geography affect immigration?

*October 4, 2012*

**math**

The volume of a rectangular box is (x^3+6x^2+11x+6) cm^3. The box is (x+3) cm long and (x+2) cm wide . How high is the box

*October 2, 2012*

**math**

Consider the function f(x)=x^3+4x^2+kx-4. The remainder from f(x)/(x+2) is twice the remainder from f(x) / (x-2). Determine the value of k

*October 2, 2012*

**math**

The function f(x)=ax^3-x^3+bx-24 has three factors. Two of these factors are x-2 and x+4. Determine the values of a and b , and then determine the other factor

*October 2, 2012*

**3rd Grade Math**

title is class collection data week 1

*October 2, 2012*

**math**

Factor each expression (X+5)^3-(2x+1)^3

*October 1, 2012*

**math**

Factor each expression (X+5)^3-(2x+1)^3

*October 1, 2012*

**World History**

In the question "Why the haitian revolution probably truer to itself than it's French or American counterparts?" Is it referring to how the Haitian revolution stayed truer to their cause in revolution because they gave everyone equal rights, while american and ...

*October 1, 2012*

**math**

Each dividend was divided by another polynomial, resulting in the given quotient and remainder. Find the divisor Divided:5x^3+x^2+3 ,quotient:5x^2-14x+42, remainder:-123

*September 28, 2012*

**world history**

I have no idea. someone help me too!!!

*September 23, 2012*

**health**

why is having excessive abdominal fat a serious concern

*September 20, 2012*

**O Chem**

Comment on the suitability of running a infared spectrum under these conditions A KBr pellet is prepared with a compound that melts at 200 C same question but at 30 C

*September 18, 2012*

**O chem**

comment on suitability of running infared spectrum under the following conditions: A neat spectrum of liquid with a boiling point of 150 C is determined with salt plates. and same question but at 35 C

*September 18, 2012*

**math**

the final grade for a particular course is calculated by dividing total points earned by total points available. There are 6 quizzes worth 15 points each, and 2 exams worth 50 points each. If a student earns 67 points total on the quizzes and wants to get at least 86% in the ...

*September 8, 2012*

**math**

Evaluate f(x) = x^2+3-4 For f(1/4)

*September 4, 2012*

**math**

156 / 55 - how do i show my work for long division?

*August 30, 2012*

**Art**

thank you.

*August 28, 2012*

**Art**

Just a fast question. Im writing about Gothic stained glass windows, and was wondering if in the decorations on the windows was Christ depicted in them ?

*August 28, 2012*

**algebra**

Write a rule in words and as an algebraic expression to model the relationship in each table. The local video store charges a monthly membership fee of $5 and $2.25 per video. 1 video is $7.25 2 videos are $9.50 3 videos are $11.75

*August 27, 2012*

**Algebra**

Please help me with this algebra question?!?!?!? Find the discriminant of the equation in terms of p and q. Suppose q<p<0. Tell how many real solutions the equation has. px^2+qx-p I really need help with this math question! And indoor gym room consists of a rectangular ...

*August 26, 2012*

**HEALTH**

Man im here for ashworth and ms sue keeps messing me up

*August 22, 2012*

**Math computation**

8 9/15 - 1/2 = A.8 8/13 B.8 4/15 C.8 8/15 D.8 8/1 E. None of these A? 5/6 / 15= A. 1/2 B. 10 5/7 C. 18 D. 1/18 B?

*August 15, 2012*

**math concepts and applications**

Which of these is another way to write 11/50? A. 11% B. 22% C. 110% D. 220% A?

*August 15, 2012*

**math concepts and applications**

B?

*August 15, 2012*

**math concepts and applications**

A rectangle has a length of 6 meters and a perimeter of 20 meters. What is the width of the rectangle? A. 4 meters B. 7 meters C. 14 meters D. 52 meters C ?

*August 15, 2012*

**math concepts and applications**

What number completes this number sentence? 3x(5+8)= (3x5)+(__x8) F.3 G.5 H.15 J.24 F ?

*August 15, 2012*

**math concepts and applications**

What is the volume of a triangular prism that has a base area of 30 mm2 and height of 18 mm? (v=bh) A.48 mm3 B.96 mm3 C.270 mm3 D.540 mm3 A?

*August 15, 2012*

**Math concepts and applications**

B?

*August 15, 2012*

**Math concepts and applications **

which number sentence is true ? A.0.027 < 0.0027 B.0.0027 < 0.027 C.0.27 < 0.027 D.2.7 <0.27 D?

*August 15, 2012*

**math**

8 9 A)8 8/13 b)8 4/15 c)8 8/15 _ D)8 1/10 i think a 15 - 1 _ 2 _______

*August 15, 2012*

**language expression**

B?

*August 14, 2012*

**language expression**

9).Choose the sentence that has the same senetence pattern as the first sentence. She opened her book. A.George seemed pleased B.Tim strummed his guitar C.Sue is a superb athlete D.Grace wrote in her daily .......D?

*August 14, 2012*

**vocbulary**

Sorry I typed it wrong.. Is the Campsite ____ by car, or will we hike the last few miles? F.divisible G.applicable H.accessicable J.dispensable I got H ?

*August 14, 2012*

**vocbulary**

is the campsite ______ by car, or will we notice him. F)divisible G)applicable H)acessible J)dispenseable i think its h

*August 14, 2012*

**vocabulary**

zestFUL remorseFUL A) result of B)place for C)capable of D)filled with i think its c choose the word or phase that gives the best meaning of the underlined prefix or suffix.

*August 14, 2012*

**ss**

Women played important and diverse roles in the Mexican Revolution,Intellectuals,the Zapatista movement ,which have been largely overlooked by historians. In addition, these roles, in many cases, gave rise to post-Revolutionary feminist organizing. "The long-lasting ...

*August 9, 2012*

**ss**

Describe three social or economic reforms between 1917 and the 1930s that were a result of the mexican revolution? is this good enough.. Obregón, Álvaro, 1880-1928, president of MEXICO (1920-24). A successful general in the Mexican revolution (1910-17), he rose (...

*August 9, 2012*

**English 3**

A pronoun preceding a gerund is in the

*July 25, 2012*

**Integrated Math 1**

All nurses in hospital

*July 23, 2012*

**statistics**

How could you reword the research hypotheses below to null hypotheses?a. Smoking during pregnancy increases the risk of a child being born prematurely.

*July 5, 2012*

**business**

identify and explain the objectives of a supplier

*June 30, 2012*

**pre-algebra**

a math professor is teachin two classes. The first class has 100 student enrolled and the second class has 75 estudent enrolled if 3/4 estudent of the first class pass and 2/5 student of the second class pass. how many estydent pass in total

*June 23, 2012*

**Calculus**

determine where f(x)={x^2-5x+6/x-3, if x<3 {1/x-2, if x>3 is discontinuous.

*June 19, 2012*

**physics**

The distance between successive crests in a series of water waves is 5.0m; the crests travel 8.6m in 5.0s . Calculate the frequency of a block of wood bobbing up and down in the water

*June 18, 2012*

**Finance**

Aset P has a beta of 0.9. The risk-free rate of return is 8%, while the return on the S&P 500 is 14%. Asset P's required rate of return is:

*June 17, 2012*

**physics**

Some children go tobogganing on an icy hill. The start from the rest at the top of the hill. The toboggan and children have a combined mass of 94 kg. The height of the first hill a is 12.0m the height of b is 0, and the height of c is 3.0m. If friction is small enough to be ...

*June 15, 2012*

**physics**

Your English teacher can swim with a constant speed of 0.67m/s. While facing south , he attempts to swim straight across the St. Lawrence River , which moves east at 1.4 m/s a) find his velocity as seen from the riverbank. B) if the river was 175m wide How long does it take ...

*June 14, 2012*

**physics**

An object falls from the top of the school, which is 6.06m high. Assume air resistance can be ignored and the acceleration is 9.8m/s^2 If the object was dropped( not thrown) , what is its speed after 0.333s How long does it take to hit the ground

*June 13, 2012*

**physics**

A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 5 kg mass skids down the frictional incline of height 31 cm and inclined at a 18◦ angle. The acceleration of gravity is 9.8 m/s2 . The path is frictionless except for a distance of 0.8 m along...

*June 12, 2012*

**physics**

A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 5 kg mass skids down the frictional incline of height 31 cm and inclined at a 18◦ angle. The acceleration of gravity is 9.8 m/s2 . The path is frictionless except for a distance of 0.8 m along...

*June 12, 2012*

**physics**

A formula one car is moving at mach 0.16 when the temperature of the air is 20.0c. What is the speed of the car in kilometers per hour?

*June 6, 2012*

**physics **

A plane traveling at 260m/s has a speed of Match 0.80. What is the speed of sound in the air

*June 6, 2012*

**physics**

Assuming that the speed of sound at a certain altitude is 330m/s calculate the speed of an airplane that is traveling at match 4.2 ?

*June 6, 2012*

**physics**

Thank you

*June 6, 2012*

**physics**

The source of a wave generates 25 crests and 25 troughs in 5.0s, and the distance between two successive crests in that wave is 1.5 m . What is the speed of the waves

*June 6, 2012*

**physics**

The distance between the second and sixth crests in a wave is 75cm and one crest travels a distance of 25 cm in 3.0s . Find the frequency of the wave

*June 6, 2012*

**physics**

The second resonant length of an open air column is 48cm. Determine the first and third resonant lengths

*June 5, 2012*

**physics**

Could you please explain how you got that! The answer should be 20.0cm and I just don't understand

*June 5, 2012*

**physics**

What's the shortest air column , closed at one end, that will resonate at a frequency of 440.0Hz when the speed of sound is 352 m/s

*June 5, 2012*

**physics**

Thanks:)

*June 5, 2012*

**physics**

The first resonant length of a closed air column occurs when the length is 30.0cm . What will the second and third resonant lengths be

*June 5, 2012*

**physics**

The third resonant length of a closed air column is 75cm . What is the first and second length

*June 5, 2012*

**physics**

A car sounds its horn (502 Hz) as it approachs a pedestrian by the side of the road. The pedestrian has perfect pitch and determines that the sound from the horn has a frequency of 520 Hz. If the speed of sound that day was 340 m/s , how fast was the car travelling

*June 4, 2012*

**physics**

Assuming that the speed of sound at a certain altitude is 330m/s calculate the speed of an airplane that is travelling at (A) mach 0.70

*June 4, 2012*

**physics**

A ship is traveling in fog parallel to a dangerous , cliff-lined shore. The boat whistle is sounded and its echo is heard clearly 11.0 s later. If the air temperature is 10.0 c , how far is the ship from the cliff.

*June 3, 2012*

**physics**

Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m

*June 3, 2012*

**health**

According to the AMA, what is the key reason behind a physicians duty of confidentiality to a patient? Thanks in advance!!!

*June 2, 2012*

**statistics**

Given a level of confidence of 99% & a population standard deviation of 10, answer the following: (A)What other information is necessary to find the sample size (n)? (B)Find the Maximum Error of Estimate (E) if n=77. show all work.

*May 30, 2012*

**Chemistry**

Calculate the mass of silver bromide produced from 22.5 g of silver nitrate in the following rxn: 2AgNO3(aq) + MgBr2(aq)-->2AgBr(s)+ Mg(NO3)2 (aq)

*May 28, 2012*

**Math**

The present value of the money in your savings acct is $420, and you're receiving 3% annual interest compounded monthly. What is the future value in 2 months?

*May 27, 2012*