Saturday
February 13, 2016

# Posts by Mona

Total # Posts: 147

Physics 30
A system containing a frictionless pulley is described in the diagram on the right (the 2.0 kg box is on the floor while the 3.0 kg box is 0.5m high) . If this system is released, what will be the momentum of: A. the 2.0 kg box when the 3.0 kg box hits the floor? b. the 3.0 kg...
January 23, 2016

Physics 30
A system containing a frictionless pulley is described in the diagram on the right (the 2.0 kg box is on the floor while the 3.0 kg box is 0.5m high) . If this system is released, what will be the momentum of: A. the 2.0 kg box when the 3.0 kg box hits the floor? b. the 3.0 kg...
January 23, 2016

Physics 30
A frictionless pulley (a 2.0 kg is on the floor while the 3.0 kg is 0.5m high) . when released, momentum of the 2kg is?
January 23, 2016

chem
what is the balanced equation for aqueous zinc chloride and aqueous sodium chromate? Is it, ZnCl2+NaCrO4-->ZnCrO4+NaCl2 and how do I know if it is reactive or not?
October 11, 2015

buisness
because it leave people who work in germany (nokia) without job after moving from one country to another . and this of course has impact in the society
October 1, 2015

buisness
in 2009 Nokia decided to move from Germany ro Romania and then to china . in this question we need to decide whether it's ethical or not.or if it's just a business decision . i have been reading and and saw articales that support my opinion . i believe it was unethical...
October 1, 2015

Maths
a box contains 3 black balls , 7 white balls and 5 red balls . one ball is lost . the probability that a red ball is drawn is 2/7 . The colour of the lost ball is
July 14, 2015

Calculus
Simplify: (5x^3 + x^2 - x)/ (3x)
July 8, 2015

Calculus
log (base 3) x^2 = 2log(base 3)4-4log(base 3)5 And I need to solve for x.
July 6, 2015

math
the ratio of gasoline to oil need is 16:1 if you have 3.5 ml of oil how many ml of gasoline must you add to get the proper mixture find answer
May 7, 2015

chemistry
Referring to the following reaction: Pb(NO3)2 (aq) + Na2SO4 (aq) -->PbSO4 (s) + 2NaNO3 (aq) A solution of 0.114 M Pb(NO3)2 with a volume 10.6 mL is added to 12.4 mL of a solution of 0.105 M Na2SO4. Calculate the number of grams of PbSO4 that will form. I already checked out...
May 6, 2015

fine art
April 9, 2015

fine art
The elements of art are line,texture,shape/form,color,value, texture, and space/perspective. In this specific artwork, line, shape, and space is used but I want a clear answer as to how they are used. Thank you so much.
April 9, 2015

fine art
I mean I know what elements of art are used but I do not know how they are used.Can you please help me?
April 9, 2015

fine art
April 9, 2015

fine art
How are the elements of art used in the artwork titled "winged genie fertilizing a date tree?"
April 9, 2015

Geometry
Points F, E, and D are on the sides line AB, line AC, and line BC, respectively, of right triangle ABC such that AFDE is a square. If AB = 12 and AC = 8, then what is AF?
March 29, 2015

Geometry
In the triangle, angles ABC and ADE are right angles. If AC = 35, AE = 11, and BE = 10, then what is AD?
March 29, 2015

math
x1= a x2= 0 x3=1 y1=0 y2=b y3=1 So x1(y2-y3)+x2(y3-y1)+x3(y1-y2)=0 a(b-1) + 0(1-0) + 1(0-b)=0 ab-a-b=0 ab-b=a 1-1/a=1/b 1=1/a+1/b
March 15, 2015

Science
A dicot seed is preferred over a monocot seed to observe seed structure because? a.Distinct embryonic axis or b.Proper sepration of cotyldeons
March 15, 2015

mrr high school
Find the power of human heart ,which beats72 times per minute , if it does 1.5J of work every beat.
January 2, 2015

chemistry
Which term has the same numerical value for the forward reaction as it has for the reverse reaction, but with opposite sign? a. ^E ( delta E) b. Ea1 c. Ea’ d. Ea2
December 13, 2014

moral science
UNSCRABLE THESE WORD..ineisfsirdne; htotvulfhgrsen
December 10, 2014

quantitative maths
in a race A beats B by 100m. the ratio of their speeds is 5:4 . what is the length of the racecourse?
December 7, 2014

Maths
Two poles 13m and 18m high stand upright on a playground if their feet are 12m apart find the distance between their tops
November 5, 2014

algebra
2x + 1 =7
October 8, 2014

math
Evaluate. 8 • [5 + (18 – 7)] ÷ 4
September 8, 2014

Time zones
Thanks Ms. Sue!
August 14, 2014

TIme zones
1. If its 12 noon in Greenwich time, what time is it in Moscow, Denver? I said 3 PM. 2. If its 2:30 PM in Abidjan, what time is it in the zone labeled +7? I put 9 PM In the zone labeled -4? I put 10 AM
August 14, 2014

History
How did imperialism in Africa and Asia, and the value of the U.S. exports in 1870-1920 increasing support a policy of the Open Door?
August 14, 2014

Is this right?
Ok so i should take out the part about the ships ?
August 14, 2014

Is this right?
Between 1857 and 1903, the United States acquired many new territorial possessions around the globe. Why do you think so many of these new possessions were islands located in the Pacific Ocean? So that they could stop their ships there and refuel them. Also, most of the other ...
August 14, 2014

Science/Biology/Physics
1- a 2- a 3- a 4- a 5- c 6- a 7- c 8- a 9- b 10- b
July 23, 2014

science
June 9, 2014

science
A uniform disk with radius 0.320m and mass 28.0kg rotates in a horizontal plane on a frictionless vertical axle that passes through the center of the disk. The angle through which the disk has turned varies with time according to è(t)= (1.20rad/s)t + (8.70rad/s^2)t^2 my...
June 9, 2014

physics
A body is projected vertically upwards with a speed of 40 m/s.Find the distance travelled by body in last second of upward journey?(g=9.8m/s2 neglect effect of air resistance)
May 30, 2014

Chemistry 104
The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 11.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.
May 8, 2014

Chemistry 104
I am doing something wrong I keep getting the wrong answer
May 8, 2014

Chemistry 104
A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution?
May 8, 2014

Algebra
x -1 -1 -2 -2 y 0 -1 2 3Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table. (4 points) Part B: The function f(h) shown below represents the number of tennis matches Diana won each month when she practiced ...
May 6, 2014

statistics
A neuropsychologist is interested only in studying the most deviant portion of this population, that is, those individuals who fall within the top 10% and the bottom 10% of the distribution. She must determine the ages that mark these boundaries. What are these ages?
February 5, 2014

chemistry
Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.Please help!!!!!
November 14, 2013

chemistry
Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.Please help!!!!!
November 13, 2013

chemistry
Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.Plaese help!!!!!
November 13, 2013

chemistry
Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.
November 12, 2013

chemistry
If the thyroid test requires 3.2mCi in an "atomic cocktail," how many milliliters are used to prepare the iodine-131 solution?
November 1, 2013

chemistry
How would you prepare 2.25L of a 3.00M solution from a 15.0M stock solution?
October 18, 2013

chemistry
Each of the following is placed in a dialyzing bag and the bag is then immersed in distilled water. Which substances will be found outside the bag? Check all that apply. NaCl solution albumin solution starch solution
October 17, 2013

chemistry
Consider a mixture of , albumin solution, and starch solutions in a dialyzing bag. The dialyzing bag is then immersed in distilled water. Which of the following actions should be taken to remove the most salt from the mixture? Leave the dialyzing bag in the distilled water for...
October 16, 2013

chemistry
How did you get 52/3??
April 17, 2013

Geometry-8th gr
Thanks!
March 8, 2013

Geometry-8th gr
The Circumference of a circle is equal to the area of the circle. Find the radius. Thanks.
March 8, 2013

Geometry-8th gr
Find KN and LM. In triangle LKM, angle L is bisected. Line segment LK is 11, line segment KN is x-4, line segment NM is 5.4, and line segment LM is 2x + 1.3 (there is a drawing of this triangle) Thanks.
February 1, 2013

Geometry-8th gr
The perimeter of triangle ABC is 120. LIne segment BD bisects <B. Line segment AD= 15, and line segment DC= 21. FInd AB and BC. Thanks.
February 1, 2013

Geometry -8th gr
Okay, I get it now:)...thanks.
February 1, 2013

Geometry -8th gr
Given: triangle ABC ~ triangle PQR, m<A = 75 degrees, m<P = (5x + 7y) degrees, m<R = (3x + 4y) degrees, and m<B =( 2x + 9y) degrees. FInd m<R. Thanks
February 1, 2013

Geometry-8th gr
Can you please help me solve this question? Express the ratio x^2 + 4x -12/ x^2 - 4 in simplest form. Thanks.
February 1, 2013

Geometry-8th gr
Can you please help me with this question? 1.) Given: triangle ABC ~ triangle XYZ, m<A= 50 degrees, m<X= (2x +5y) degrees, m>Z=( 55 + y) degrees, and that m<B=(102-x) degrees. Find m<Z. Thanks.
January 31, 2013

Geometry-8th gr
Oh okay...thanks.
January 31, 2013

Geometry-8th gr
Thanks. So the geometric mean for 16 and 9 is 4/3?
January 31, 2013

Geometry-8th gr
The geometric mean x of two numbers is the positive value of x that satisfies the proportion a/x =x/b, where a and b are given. Find the geometric mean of 16 and 9.
January 31, 2013

Geometry-8th gr
IF 3a =2b and 4b=9c, find the ratio of a to c in simplest form and show steps.
January 31, 2013

Economics
Suppose the bottle water industry is competitive. If a bottle of water supplied by the typical firm has an ATC of 20 cents and the market price if 30 cents, is the bottle water industry in long run equilibrium?
December 10, 2012

math
Mary and Peter had a total of Rs 480.After Peter spent Rs 20, he had 3 times as much as Mary.How much did Mary have?
December 9, 2012

geometry
Lp=2x om=4x+30 and pm=50
October 30, 2012

Programming in Python
A customer in a store is purchasing five items. Design a program in python that asks for the price of each item, and then displays the subtotal of the sale, the amount of the sales tax , and the total. Assume the sales tax is 6 percent.
September 7, 2012

physics
what is sqrt(110^2+45^2) 118.849 at an angle of arctan45/110 E of N ^^^ what's that for?
August 29, 2012

physics
An RV travels 45 km east and stays the night at a KOA. The next day it travels for 3 hours to the north, traveling 110 km. What is the displacement over the two days for the RV? Please help, thank you!
August 29, 2012

physics
1. If m1= 3kg and m2= 2kg then find acceleration and tension action on the system. 2. A batsman deflects a ball by an angle 45 degree without changing its initial speed which is equal to 54km/hr.What is the impulse imparted to the bal.(mass of the ball is .15kg)
August 14, 2012

science (physics)
A chairlift carries skiers to the top of a ski hill. If the chairlift does 180 kJ of work in 15s, what is the power of the chairlift?
May 18, 2012

science
During the shot put competition at a track and field meet, a shot putter transfers 245J of energy to a 7200g steel ball he is throwing. What is the velocity of the ball?
May 9, 2012

science
Draw a free body diagram to show the relationship of forces on a 200 kg boulder resting on a 15degree incline. Include the magnitude of the force applied by an aadvark as it holds the boulder in place.
May 3, 2012

Math
Determine a relationship between the x- and y- values in the equation {(0,1), (1,0), (2, -1), (3, -2)}. Write an equation......y=?
March 20, 2012

physics
A roller coaster reaches the top of the steepest hill with a speed of 3.0 . It then descends the hill, which is at an average angle of 36 and is 50.0 long. Estimate its speed when it reaches the bottom. Assume friction coefficint Mk=0.18.
March 15, 2012

Math
If someone paid \$95 for ten tickets to a concert. Adult tickets cost \$15 each. Kids tickets cost \$8 each. How many of each kind of tickets did they buy?
February 4, 2012

social studies
If you had to move to a Northern European country, how would you decide which country you would move to?
January 26, 2012

social studies
How is the physical geography of northern Europe connected to the economies of northern Europe?
January 26, 2012

confidentiallity in allied health
when should the computer bureau destroys or erases records,should the erasure be verified by the bureau to the physician?
December 13, 2011

Language Arts
Whats wrong with this sentences. Able to easily alter her appearance by changing her way of moving and her facial expressions, Tubman often hid in plain sight.
December 1, 2011

Algebra
solve the amount of money (in cents) of x quarters and (x+6) dimes the value of a quarter is 25 cents and a value of a dime is 10 cents
November 29, 2011

ALGEBRA- MATH
Avery paid \$168 for a cell phone. What was the original price of the phone if he got it at a 30% discount?
November 1, 2011

math
one freezercan hold 100 frozen yougurt bars .how many frozen yougurt bars are in.10 freezers?60 freezers?3 freezers?100 frteezers?
October 12, 2011

disease
thank you guys,,
September 19, 2011

disease
thank you for your effort. i appreciate it but i am looking for a particular asnwer as it keep linking back to diabetes. Thank you
September 19, 2011

disease
what is the relation between high Blood glucose level (not Diabetes) and Urinary tract infection.
September 19, 2011

Math
The perimeter of a rectangle is 46m. If the width were doubled and the length were increased by 12m, the perimeter would be 82m. What are the length and width of the rectangle?
July 24, 2011

english macbeth
thanks but i've opened it already so if you have any other websites i would appreciate it
May 27, 2011

english macbeth
i really nedd to know what i'm suppose to write in macbeth's theme superstition? i know that it's about the witches and their prophecies and apparitions and about banquo's ghost but what should i emphasize on??
May 27, 2011

epidemiology
A new screening test for a disease is developed for use in the general population. The sensitivity and specificity of the new test are 60% and 70%, respectively. Four hundred (400) people are screened at a clinic during the first year the new test is implemented. (Assume the ...
May 21, 2011

epidemiology
A new screening test for a disease is developed for use in the general population. The sensitivity and specificity of the new test are 60% and 70%, respectively. Four hundred (400) people are screened at a clinic during the first year the new test is implemented. (Assume the ...
May 20, 2011

statistics
Suppose a random sample of 36 is selected from a population with a standard deviation of 12. If the sample mean is 98, the 99% confidence interval to estimate the population mean is
April 25, 2011

English
April 25, 2011

Math
if x = 10 what is 3x² - x + 14 ?
April 12, 2011

math
Two of these statements are false. Identify them. 1.4x12>3x15 2.96/2<96/3 3.28+82>31+13 Answers: 1. 48>45 2. 48<32 3. 110>44 48<32 false What is the other one?
March 23, 2011

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