Sunday

February 7, 2016
Total # Posts: 78

**Physics **

A 500kg piano is being lowered into position by a crane while to people steady it with ropes pulling to the sides.Bob's rope pulls to the left, 15' below the horizontal, with 500N of tension.Ellen's rope pulls toward the right, 25' below horizontal. a)What ...
*January 22, 2016*

**Math**

which value of k makes p^2-8p+k a perfect square?
*January 17, 2016*

**physics**

It has been suggested that rotating cylinders about 12.5 mi long and 4.88 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth? Answer...
*January 5, 2016*

**physics**

A 2,200-kg car moving east at 10.0 m/s collides with a 3,000-kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 35.0° north of east and at a speed of 5.16 m/s. Find the speed of the 3,000-kg car before the collision.
*December 13, 2015*

**physics**

A pitcher throws a 0.141-kg baseball toward the batter so that it crosses home plate horizontally and has a speed of 42 m/s just before it makes contact with the bat. The batter then hits the ball straight back at the pitcher with a speed of 50 m/s. Assume the ball travels ...
*November 30, 2015*

**Science**

A vertical load of 100N is supported by two chains, A and B, in the same vertical plane. The force in A is 50N and acts in a line at 30 degrees to the horizontal plane (i.e. at 120 degrees to the 100N load). Determine the force in chain B and the angle between A and B.
*October 30, 2015*

**Physics**

Forces of 10.3N north, 19.5N east, and 15.2N south are simultaneously applied to a 4.06kg mass as it rests on an air table. What is the magnitude of its acceleration?
*September 26, 2015*

**physics**

A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are µs = 0.4 and µk = 0.34, respectively. The acceleration of gravity is 9.8 m/s. What is the largest angle which the incline can have so that the mass does not ...
*September 22, 2015*

**physics**

Consider two vectors F~ 1 and F~ 2 with magnitude F1 = 61 N and F2 = 63 N and where θ1 = 98 ◦ and θ2 = 50 ◦The angles are measured from the positive x axis with the counter-clockwise angular direction as positive. What is the magnitude of the resultant ...
*September 9, 2015*

**Idk**

matthew travels tow and one half miles to get to school this is 3 time the distance that jennifer travels how far does jennifer travel
*August 27, 2015*

**math**

A truck has a cylindrical tank 9 m long for transporting milk. The diameter of the tank is 2.8 m. How much milk can it hold? (Use 3.14 for π.)
*May 28, 2015*

**Physics**

Stupid
*March 12, 2015*

**math**

A and B are twos 360 km apart. An express bus departs from A at 8 a.m. and maintains an average speed of 90 km/h between A and B. Another bus starts From B also at 8.m. and moves towards A making four stops at four equally spaced points between B and A. Each stop is of ...
*February 9, 2015*

**math**

Mary bought maize and beans from a wholesaler. She then mixed the maize and beans ratio 4:3, she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
*February 6, 2015*

**math**

A rectangular tank of base 2.4 m by 2.8 m and a height of 3 m contain 3,600 liters of water initially. Water flows into the tank at the rate of 0.5 liters per second Calculate the time in hours and minutes, required to fill the tank
*February 5, 2015*

**math**

A man walks directly from point A towards the foot of a tall building 240m away. After covering 180m, he observes that the angle of the top of the building is 45. Determine the angle of elevation of the top of the building from A.
*February 4, 2015*

**Math**

The marked price of a bicycle is $ 6245. Dan bought the bicycle on cash terms and was given a 10% discount. Dave bought the same type of bicycle on hire purchase terms whereby he paid a deposit of $ 3000 and 12 equal monthly installments of $ 500. How much more than Dan did ...
*January 17, 2015*

**math**

Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion. 19.75 in² + 26.2 in³
*January 15, 2015*

**math**

What do the lines making a circle around the low-pressure area indicate? 1.The values cannot be added because one is measuring area and the other is measuring volume. 2.The values can be added without making a conversion of units because they both measure area. * 3.The values ...
*January 15, 2015*

**math**

What is the next number in the pattern 4, 9, 25, 49, 121, 169, ___
*January 13, 2015*

**math**

A cuboid measures 6cm long, 5cm wide and 4cm high. What is the total length of the edges in centimeters?
*January 12, 2015*

**math**

San Diego left San Francisco on Tuesday at 6.30 p.m. and took 8 hours 45 minutes to reach his home. On what day and at what time in a 24 hour system did he reach home?
*January 12, 2015*

**math**

John is now two years older than Martha. If Martha's age is represented by x, what will be their total ages after 10 years?
*January 12, 2015*

**math**

At a school prize giving day the number of men was half of women. The number of children was three times that of women. The number of women who attended was 3x. What was the sum of the men and children?
*January 12, 2015*

**math**

The cash price of a cupboard is $3 000. An interest of 25% is charged if the cupboard is bought on hire purchase terms. Amina bought the cupboard on hire purchase terms. She paid a deposit and twelve equal installments. Each installment was $ 262.50. How much deposit did she pay?
*January 10, 2015*

**math**

A salesman is paid a monthly salary of $6,000 and a 5% commission on goods he sells above $20,000 each month. In a certain month the salesman earned $13, 000. How much money was the sales of the goods that month?
*January 10, 2015*

**math**

Fifteen painters can paint a number of houses in 12 days .if the number of painters is increased by 5, how many days less would it take the painters working at the same rate to paint the houses?
*January 10, 2015*

**math**

area of cube = 6*81 = 486
*January 9, 2015*

**math**

A metal solid made up of a cylindrical bar fixed onto a cube. The cylindrical bar fixed onto a cube. The cylindrical bar is 20 cm long and has a diameter of 7 cm. Each side of the cube is 9 cm long. The surface of the solid was painted. What area in area in cm2 was painted? (...
*January 9, 2015*

**math**

A plot of land is in the shape of semicircle of diameter 28 meters. The plot fenced by erecting posts 4 meters apart. How many posts were used? (Take π =22/7)
*January 9, 2015*

**math**

In a cupboard there are pencils, rulers and books. The number of pencils is 15 more than that of rulers. The number of books is three times that of rulers. If the number of pencils is p,write the equation to represents the total number of items in the cupboard?
*January 9, 2015*

**math**

In a cupboard there are pencils, rulers and books. The number of pencils is 15 more than that of rulers. The number of books is three times that of rulers. If the number of pencils is p, which one of the expressions below represents the total number of items in the cupboard?
*January 9, 2015*

**math**

A fundraising meeting for Jako, Bula, Jane and Abdi raised $ 108,000. Jako got three times as much as abdi. Jane got two-thirds of Jako's share while Bula got half as much as Jako. How much did Bula receive?
*January 9, 2015*

**math**

A product that was originally priced at $2,000 had it'd price increased on June 1 by 5%. On December 1 the price was increased by 5% of the new June price. By how many dollars did the price increase on December 1?
*January 6, 2015*

**Lotto**

show me the next winning, the of winning 34,44,39,63,52 machine 16,35,77,66,80?
*December 22, 2014*

**Math **

916:3= 305
*October 30, 2014*

**math**

when 3x -2x +1 is subtracted from 2x + 7x +5 the result well be
*October 6, 2014*

**Coordinate geometry **

Help me i this please the segment joining the midpoint of 2 sides f a triagle is parallel to the 3rd side and half as long. thaks
*February 3, 2014*

**SCIENCE**

The intensity level of sound A is 5.0dB greater than that of sound B and 3.0dB less than that of C. Determine the ratio(Ic/Ib) of the intensity of sound C to that of B.
*October 28, 2013*

**physics**

Provide me with an angle, because you ask inclination in a form of projectile.
*October 28, 2013*

**Maths**

3/4 -1/12=2/3
*October 28, 2013*

**math explanation**

916 : 3 =305
*October 14, 2013*

**math explanation**

6x 1 = 6
*October 14, 2013*

**physical science**

100.0 Kg for both skates
*September 26, 2013*

**Physics**

an airplane is flying in a horizontal of radius 1.0 km what must be the speed of the plane if the pilot is to experience a centripetal acceleration three times that of gravity.
*March 8, 2013*

**Physics**

NOTHING
*December 5, 2012*

**Social Studies**

Who organized trade in medieval cities and towns? (2 points) guilds clergy knights journeymen 2. What is a fief? (2 points) a ruler of the Franks a ruler in Charlemagne's empire land given in exchange for loyalty a Viking warrior 3. Christians and Muslims wanted to control...
*November 27, 2012*

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

hhhhhhhhhhhhhaaaaaaaaaa!!!!!!!!!!!!!!
*October 10, 2012*

**health**

It is recommended that a person ________ to manage and reduce stress.
*August 8, 2012*

**math**

In a random sample of 1,000 exams, the average score was 500 points with a standard deviation of 80 points. Find the interval about the sample mean such that the probability is 0.90 that the mean number lies within the interval.
*May 25, 2012*

**physics**

an ant walks 4 cm East, gets some rest, and continues for another 3 cm in the same direction. What is the total displacement traveled by the ant?
*May 14, 2012*

**chemisrty**

559.79
*March 20, 2012*

**ISDS**

True
*March 13, 2012*

**Geometry**

The Seinfeld's family room measures 19 feet by 30 feet. They are covering the floor with square tiles that measure 1 foot on a side and cost $0.68. How much will they spend on tile?
*February 9, 2012*

**math**

Part 1 In your own words, define the word “function.” Give your own example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5.Explain why your example ...
*November 30, 2011*

**math**

use the names and ages of yourself and the other two people you selected. Make sure one is older than you and one is younger than you. In years, how old was the older person when you were born? Write an equation that models how old in years each of you will be, when your ages ...
*November 24, 2011*

**Math**

Calculate the minimum sample size required to find the 90% interval estimate for a population proportion if you want to be accurate within 2%.
*November 11, 2011*

**math**

Establish a 99% confidence interval for the population proportion if a sample of 200 had a sample proportion of 42%.
*November 11, 2011*

**physical science**

I need help on a problem that i asked about 3 hrs ago..please help!!
*July 19, 2011*

**phys sci**

the space shuttle orbits at an altitude of approximately 200 km above the surface of the earth. If the radius of the earth itself is 6380km, what is the acceleration due to gravity at the altitude ofthe space shuttle?
*July 19, 2011*

**PHYSICS PLZ HELP!!!**

If you have a curcuit consisting of 4 resistor of egual resistance senses and toltal voltage across all of them is 17v .what is the voltage across each of them?
*May 16, 2011*

**Science**

What is meant by the term "salting out" in the liquid-liquid extraction procedure?
*March 14, 2011*

**physics**

A skateboard track has the form of a circular arc with a 3.20 m radius, extending to an angle of 90.0° relative to the vertical on either side of the lowest point, as shown in Figure 8-24. A 67.0 kg skateboarder starts from rest at the top of the circular arc
*February 22, 2011*

**Science**

Many
*January 3, 2011*

**Chmistry**

1.05x28g
*October 11, 2010*

**physics**

19.0
*September 19, 2010*

**com 150**

elect one of the essays from the Examples of Effective Introductions section in Effective Introductions and Conclusions. Which article did you choose? What type of introduction does the writer use? What is the impact of that kind of introduction in this essay?
*March 24, 2010*

**com150**

The Internet radically reduces the cost of creating, sending, and storing information while making that information more widely available. The Internet reduces search costs, allowing customers to locate products, suppliers, prices, and delivery terms. The Internet enables ...
*March 24, 2010*

**history**

thank u gurublue i have another quote please tel me the meaning for the majority of us the past is a regret the future an experiment by mark twain
*January 3, 2010*

**history**

what is the meaning of this quote you reap what you sow and how can i make a history event out of it thanks
*January 3, 2010*

**history**

event in history that relates to the quote its never to late to be what you might have been
*January 3, 2010*

**chemistry**

Good job contributing nothing GK. The answer is A.
*May 17, 2009*

**my ailing relationship**

my partner of two years just left me for another without any reason. i feel empty since and i request you to remember me in prayers so that we reunite in love and grace of the Lord
*July 14, 2008*

**yes**

u are correct... 1 pair in the 2s orbital and 1 in the 2p orbital (along with the other 2 bonding pairs)
*May 28, 2008*

**Organic Chemistry**

calculate how much sulfanilamide will remain dissolved n the mother liquor after the mixture is cooled to 0 degrees Celsius?
*September 9, 2007*

**english**

Select one of the essays from the Examples of Effective Introductions section in Effective Introductions and Conclusions. Which article did you choose? What type of introduction does the writer use? What is the impact of that kind of introduction in this essay?
*September 5, 2006*

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