Saturday
September 24, 2016

Posts by ali

Total # Posts: 744

Physics
A 60 kg is pushed 12m across a horizontal floor by a horizontal force of 200N. The coefficient of kinetic friction is 0.3. How much work went into overcoming friction and how much work went into accelerating the box.
October 12, 2015

Math
YoU order 6 pizza & you eat 2/3 of one pizza before your guest arrived. Each one of your guest eat 1/4 of pizza & left with 5/6 of pizza. How many guest did you invited?
October 7, 2015

Physics
Two blocks connected by a rope of negligible mass are being dragged by a horizontal force F (Fig. P5.45). Suppose that F = 75.0 N, m1 = 14.0 kg, m2 = 19.0 kg, and the coefficient of kinetic friction between each block and the surface is 0.098. a)Determine the tension T. b)...
October 5, 2015

Maths area
Mr dodson wants to fence an area that is 8 feet by 10 feet how muchfence will he need
September 26, 2015

college chemistry
From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go ...
September 23, 2015

college chemistry
From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go ...
September 23, 2015

math
Peter is three years older than his sister paula. If their combined age is 21 find their actual ages. x+3=21 X+3-3=21-3 X=18 Answer=18 and 3
September 20, 2015

Math
485
September 20, 2015

Chemistry
if a cooler has 63 kg of ice how much energy is required to melt it at 0 degrees celcius? The heat fusion for water is 80 cal/gram
September 18, 2015

Physics
t a NASA research center free-fall research is performed by dropping experiment packages from the top of an evacuated shaft 156 m high. Free-fall imitates the so-called microgravity environment of a satellite in orbit. What constant acceleration would be required to stop an ...
September 10, 2015

6th grade math
When you are turning a decimal number into a mixed number the numbers to the left of the decimal will become the whole number and the numbers to the right of the decimal will become the fraction. for example: 5.815 + 6.021 = 11.836 11.836 is in decimal form 11.836 as a mixed ...
August 31, 2015

math-Urgent help please.
A diver's elevation is -30 feet relative to sea level. She dives down 12 feet. What is her elevation after the dive?
August 31, 2015

Math
1. It can be a decimal or a fraction, because decimals and fractions are NOT whole numbers. for example: -6 , 37 , 100 are integers 54.7845379 , 3/8 , 2.9 are not integers Hopes this helps you !!! :)
August 31, 2015

art
the answer is B) Creative. :)
August 5, 2015

Calculus
The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(ex) is rotated about the x-axis. What is the volume of the generated solid? Got 2.8 and .79 very confused
August 4, 2015

Physics
A convex mirror (f1 = −6.30 cm) and a concave mirror (f2 = 9.50 cm) are facing each other and are separated by a distance of 24.0 cm. An object is placed between the mirrors and is 12 cm from each mirror. Consider the light from the object that reflects first from the ...
August 3, 2015

Physics
A lighted candle is placed 38 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. The final image is real, inverted, and 19 cm beyond the converging lens. Find the ...
August 3, 2015

Calculus
that is all the information given
July 28, 2015

Calculus
The base of a solid in the first quadrant of the xy plane is a right triangle bounded by the coordinate axes and the line x + y = 2. Cross sections of the solid perpendicular to the base are squares. What is the volume, in cubic units, of the solid?
July 28, 2015

Physics
A projectile is fired straight up from the top of a 190m cliff with a speed of 170m/s . What will be its speed just before it strikes the ground below? (Use conservation of energy and neglect air resistance.)
June 11, 2015

englisg
the committee consisted of a businessman, a lawyer and lady doctor
June 8, 2015

algebra..Matrix...math
Hi, Please help me to this question would prove less than 10 hours Athens has a population of n ,m club with any club membership is an even number and the number of members of both clubs to prove and show m<n
May 28, 2015

Language Arts
11, 15, and 18 are wrong and i used THE CORRECT ANSWERS answers!!
May 16, 2015

algebra
yes
May 8, 2015

algebra
City population N and M club, any club membership is an even number of members of both clubs prove m <n
May 8, 2015

Matrix
Urban population between n and m is the number of members of the club each club the number of members of both clubs even prove m <n
May 8, 2015

Chemistry
A piece of metal of mass 18 g at 107◦C is placed in a calorimeter containing 56.5 g of water at 25◦C. The final temperature of the mixture is 56.3◦C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the ...
May 5, 2015

chem
An atom emits a photon of wavelength 1.08 meters. What is the energy change occurring in the atom due to this emission? (Planck's constant is 6.626 × 10È³Ê joule seconds, the speed of light is 2.998 × 10§ m/s)
April 22, 2015

Math
Jon is participating in a 6 mile run/walk for charity. If she completes the course & runs at least 1/2 the distance then write an equality for walking
April 17, 2015

physics
For part b, the equation for center of mass should be: x(cm)=(1/M)(integral of x dm) so integrate the equation you used to find the mass from 0 to 0.385 (aka find the second integral of the initial equation and plug in the length for x) and divide by the mass.
April 1, 2015

Science The Human Body PLEASE HELP!!!!!!!!!!!
CA - Helper is correct 6/6 100%
March 25, 2015

math,Computer
well sir Thanks for the answer I understood the description but I am new in this subject.I still cant find big O.Really thankful for your act of kindness
March 25, 2015

math,Computer
well question related to advance analysis of algorithm i.e. BIG O
March 25, 2015

math,Computer
Let A and B be two data lists. Concatenation of the list A and another list B is defined to be equal to B, if A is null; and is defined to be equal to concatenation of head of A with the concatenation of tail of A and B, otherwise (where head of A is the first element of A, ...
March 25, 2015

math
@MathMate, what is the formula for calculating the range?
March 24, 2015

math
Assume that you have to select some of the applicants for registration in some particular academic programme. Also assume that there happens to be a tie among two students having the least score. One of them has 85 marks out of 100 in the eligibility course, while the other ...
March 24, 2015

Probablity
Two dice are tossed simultaneously. What is the probability that “either the sum of top faces of dice is six or both top faces are similar”?
March 24, 2015

sciences
explain in your own word why is it acceptable to take displacements of the trolleys x1 and x2 as a measure of the velocities of the trolleys.
March 16, 2015

sciences
what is the total linear momentum of the trolleys (before the spring is released)
March 16, 2015

science
you are given a 1kg trolley and a trolley of unknown mass.explain how the mass of unknown . Explain how the mass of the known trolley can be determined if a mass-meter scale is not available
March 16, 2015

MATH
What is the slope of a line at a 45* angle? why?
March 11, 2015

physics
the water in a 0.5 km wide river is flowing at 5 m/sec from west to east. a man row a boat with a velocity of 13 m/sec in a direction of north west relative to water. find the time taken to cross the river so that man reaches exactly at same point to opposite end of the river...
February 28, 2015

ela
I'm analyzing JFK's speech for concession and counter argument. In this paragraph, I'm confused which is the counter and which is the concession. 1 "Some say that it is useless to speak of world peace or world law or world disarmament-and that it will be ...
February 26, 2015

Health
Keke what do you mean?
February 13, 2015

4th grade math
Sorry I meant there are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty?
February 2, 2015

4th grade math
There are 12 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty?
February 2, 2015

4th grade math
Thank you, Sandra.
February 2, 2015

4th grade math
Ursula bought 9 dozen gauze pads for the health office. The gauze pads were divided equally into 4 boxes. How many gauze pads are in each box?
February 2, 2015

4th grade math fraction
thank you Damon
February 2, 2015

4th grade math fraction
Ashley bought 4 packages of juice boxes. There are 6 juice boxes in each package. She gave 2 juice boxes to each of 3 friends. How many juice boxes does Ashley have left?
February 2, 2015

4th grade math fraction
Thank you Ms. Sue.
February 2, 2015

4th grade math fraction
Jasmine has 8 seashells. Three-quarters are clamshells. How many shells are clamshells?
February 2, 2015

4th grade math
Choices are Write the remainder as a fraction Use the remainder as the answer Use only the quotient Add 1 tot the quotient
February 1, 2015

4th grade math
We divided 40/6 and got remainder 4.
February 1, 2015

4th grade math
A park guide plans the swan boat rides for 40 people. Each boat can carry 6 people at a time. What is the best way to interpret the remainder of 40/6 in this situation so that everyone gets a ride? How do I show the work?
February 1, 2015

4th grade math
7 are empty. however, the choices are 6 10 16 and 28
February 1, 2015

4th grade math
16 rows empty
February 1, 2015

4th grade math
Then the answer is 10.
February 1, 2015

4th grade math
There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty? We added and got 189 then divided by 3. But it doesn't look correct. How do we show the work?
February 1, 2015

4th grade math
Jake wants to distribute 543 marbles equally among 7 of his friends. In what place is the first digit of the quotient?
February 1, 2015

4th grade math
The school choir has 48 singers with high voices, 53 singers with middle voices, and 39 singers with low voices. the singers stand in 4 equal rows at concerts. How many singers are in each row? How do I show my work for this?
February 1, 2015

4th grade math
Amanda and her four sisters divided 1,021 stickers equally. About how many stickers would each girl receive? How do I show my work?
February 1, 2015

f
You have just purchased a new warehouse. To finance the purchase, you’ve arranged for a 35-year mortgage for 85 percent of the $3,100,000 purchase price. The monthly payment on this loan will be $17,200. What is the APR on this loan? What is the EAR on this loan?
January 28, 2015

analytical mechanism
Problem 4: A block of mass m slides down a frictionless incline as: The block is released from height h above the bottom of the circular loop. (a) Find the force exerted on the block by the inclined track at point A. (Hint: Consider the Newton’s 2nd law in the radial ...
January 22, 2015

analytical
Problem 1: Consider a particle whose motion is described with the position vector: r (t) = ˆi2c cos𝞈t + ˆjc sin𝞈t, Where c and 𝞈 are constants. (a) Show that the path of the particle is an ellipse satisfying. x2/a2 +y2/b2 = 1, Where x and y ...
January 22, 2015

home work
Problem 1: Consider a particle whose motion is described with the position vector: r (t) = ˆi2c cos𝞈t + ˆjc sin𝞈t, Where c and 𝞈 are constants. (a) Show that the path of the particle is an ellipse satisfying. x2/a2 +y2/b2 = 1, Where x and y ...
January 22, 2015

home work
Problem 4: A block of mass m slides down a frictionless incline as: The block is released from height h above the bottom of the circular loop. (a) Find the force exerted on the block by the inclined track at point A. (Hint: Consider the Newton’s 2nd law in the radial ...
January 22, 2015

home work
Problem 2: A particle of mass m is released from rest in a constant gravitational field. Assuming that the air drag on the particle varies quadratically with speed, that is F (v) = c2v2, show that the distance s the particle falls in accelerating from v0 to v1 is
January 22, 2015

home work
Problem 2: A particle of mass m is released from rest in a constant gravitational field. Assuming that the air drag on the particle varies quadratically with speed, that is F (v) = c2v2, show that the distance s the particle falls in accelerating from v0 to v1 is given by: s (...
January 22, 2015

physics
i dont know i ask you question and plz you tell me what is answer ok thankyou
January 22, 2015

Physics
A bicycle and rider travel along a road. Which of the following statements is true? Neither the bicycle nor the rider undergoes a translation. Only the bicycle undergoes a translation. The bicycle wheels rotate and translate the entire bike and the rider. Only the bicycle ...
January 15, 2015

Ma t h
Problem 4: A block of mass m slides down a frictionless incline as: The block is released from height h above the bottom of the circular loop. (a) Find the force exerted on the block by the inclined track at point A. (Hint: Consider the Newton’s 2nd law in the radial ...
January 8, 2015

LA
Thanks!:)
January 8, 2015

LA
please answer
January 8, 2015

LA
Johnny struggles to overcome his pride and impatience and develop into a humble, generous young man. 5. Which type of conflict does the statement describe? (1 point) A)character vs. self B)character vs. nature C)character vs. society D)character vs. character
January 8, 2015

math
the sum of two number is 39 . twice the first number plus 3 times the second numberis 101. find the numbers. x+x+1=39 2x=38 x=19 twice the first number 19 it would be 38 and 57 b three times the second number. i know is wrong kind o but please tell me.
January 2, 2015

math
A music stores stock of music includes new releasesand top ten hots on the ratio of 3:5. How many top ten hits are tthere in a shipment of 80???? What I did 3:5 *16:*16 48:80 Is it right or not plz tell. I am having so much difficult I in this one
December 27, 2014

math
Who is correct Damon or me plz tell it
December 26, 2014

math
A music stores stock of music includes new releases and top ten hits in the ratio of 3:5. How many top hits are there was n a shipment of 80. What I did,,................... 3:5 #16:*16 48:80
December 26, 2014

Finance
5%
December 15, 2014

AP physics
An object undergoes a displacement x while a force F acts on it. If F does zero work, then the angle between F and x must be
December 11, 2014

AP physics
A particle of mass 3.00 kg is projected vertically upward with an initial velocity of 20.0 m/s. Neglecting air resistance, the particle’s kinetic energy when it is 20 m above the initial position is:
December 11, 2014

chemistry
Why the vapour pressure of water and ethanol is 760 mm of Hg at 100 C and 78.5 C ?
December 5, 2014

Math
what is 6 more than the estimated quotient of 98 and 5
November 30, 2014

physics
an object moves horizontally with a velocity v=20m/s with constant acceleration a=2m/ss.how faar does it move before its velocity is doubled?
November 30, 2014

physics
a projectile has a maximum range R=150m.find its initial velocity and the corresponding maximum height it reaches. at what angle should it be aimed to hit a target at the same level that is located at a distance x=100m from it?
November 30, 2014

Math
Betsy is making a flag, she can choose three colors from red, white, blue, and yellow. how many choices does Betsey have?
November 5, 2014

chemistry
Bringing the real world law into video games could hold various complications. The possible complications outweigh the penitence driven into the prosecuted youngsters for their time wrongdoing. Laws in the real world should be separate from the rules governing an individual&#...
November 3, 2014

physics
wheel is spinning with angular speed 8.6 radian/sec.small fractional force on shaft causes a constant angular deacceleration and wheel come to rest in 192 sec.what is angular acceleration and total angle turned during the slow down
October 31, 2014

physics
starting from rest grinding stone has constant angular acceleration 20 rad/sec at time = 0.reference axis is AB.what is angular displacement of line AB.
October 31, 2014

Algebra
In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the table to find how many roses and carnations there are in 4 bouquets of flowers? Please help answer thx
October 28, 2014

Algebra
Please help answer
October 28, 2014

Algebra
A collector has 120 movie posters and 100 band posters. She wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100. If she sells 24 movie posters, how many band posters should she sell? Explain thx
October 28, 2014

Algebra
The ratio of North American butterflies to South American butterflies is 5:3. The ratio to South American butterflies to European butterflies is 3:2. There are 30 North American butterflies at the butterfly park. Question A. How many South American butterflies are there? B. ...
October 28, 2014

Algebra
Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make? Please help answer thx
October 28, 2014

Chemistry
If I used 24.6 g of of 0.83 M HC2H3O2 (aq) (0.83 mol per 1 L of solution), how much carbon dioxide would be produced? (IT IS ASSUMED YOUR ANSWER IS IN L CO2 so you do not need to include that in your answer.)
October 25, 2014

chemistry
If I used 0.100L of 0.83 M HC2H3O2 (aq) (0.83 mol per 1 L of solution), how much carbon dioxide would be produced? (IT IS ASSUMED YOUR ANSWER IS IN L CO2 so you do not need to include that in your answer.)
October 25, 2014

chemistry
If you wanted to produce 0.25 L of CO2 gas (at STP), how many grams of sodium bicarbonate would I need to use? Acetic acid is in excess. (IT IS ASSUMED YOUR ANSWER IS IN g NaHCO3 so you do not need to include that in your answer.)
October 25, 2014

Math-Urgent help please.
Two cards are selected, without replacing the first card, from a standard deck. Find the probability of selecting an ace (A), and then selecting a 4 (B): (choose 2) 0.603% 0.592 0.592% They are dependent events. 0.00592
October 13, 2014

chemistry
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the mass of an electron to be 9.11&...
October 12, 2014

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