Tuesday
March 31, 2015

Posts by Alice


Total # Posts: 589

Physics
A force of 112 N acts on 35 kg box which moves at a steady speed across the floor. The force is directed 40 degrees above the ground. How to state Newton's second law using x components and y components? x: -Fa(cos40) -Ff=ma and y: -Fa(sin40)+Fn-Fg=0? How do you calculate ...
March 25, 2015

Math
Thank you Ms. Sue to my question on the coin collection. I just haven't figure out when to divide and when to multiply with these word problems this past week. So my answer will be 2/3 times 13/25 = 26/75 Thank you and have a nice evening.
March 13, 2015

Math
Of the coins in my collection, 13/25 are quarters. Of these quarters 2/3 are state quarters. What fraction of my coins are state quarters? I think I need to divide 13/25 by 2/3 and my answer will be 39/50. Is this correct. Thank you for your help.
March 13, 2015

Math
Jan has 1/3 hour to warm up for her dance recital. She must complete each of 6 different stretches. How long, in hours, does she spend on each type of stretch if she spends an equal amount of time on each type of stretch? I think it would be 1/3 divided by 6 for an answer of 1...
March 12, 2015

math
12/35 stamps are from Asia. Of these Asian stamps 5/16 are from Thailand. What fraction of the stamp collection are from Thailand? I want to think I need to divide but I'm not sure it makes sense. 12/35 divided by 5/16= 12/35 times 16/5 = my answer of 192/175. Is this ...
March 11, 2015

Math
Dear Ms. Sue, Thank you for helping me very much. I was a little confused on your response to your answer posted at 7:23. Would my answer be 18 instead of 12? Thank you!
March 9, 2015

Math
using a circle graph of 1/3 percussion, 2/5 brass, 4/15 woodwind and also a circle graph of 1/3 woodwind, 1/6 percussion, 1/2 brass. Both bands combine as one band. A. What fraction of the band members will play brass instruments? B. what fraction of band members will play a ...
March 9, 2015

Math
using a circle graph with 1/3 percussion, 2/5 brass, 4/15 woodwind. There are 30 musicians in the band. How many of them play bass instruments? I think I have to multiply 30 times 2/5 and in simplest form my answer would be 12. Is this correct?
March 9, 2015

Math
working with a circle graph divided up into 1/3 woodwind, 1/6 percussion, and 1/2 brass. The marching band has three percussion musicians. How many musicians altogether are in the band? I think I have to add all of the fractions together and my answer is in simplest form so it...
March 9, 2015

Math
Sara long jump was 10 feet. That is 5/6 foot longer than Tom's long jump. Did Tom jump more or less than 10 feet? I think I have to multiply and so Tom's jump was less by . I think his jump was 8 1/2 feet. Is tis correct?
March 3, 2015

Math
Bill plays ball for 9 hours each week. His friend Mark spends as much time playing ball. Who plays more ball? I think I have to divide. So I think Mark plays more ball by 10 4/5 hours. Is this correct? Thank you so very much for your help Ms. Sue.
March 3, 2015

Math
Hank's fish bowl holds 9/10 gallon of water. It is now 2/3 full. How much water is in the bowl? I subtracted and my answer is 7/30. Is this correct?
March 3, 2015

Math
I can throw a ball 10 1/3 yards. My cousin can throw a ball 13 1/12 yards. How much farther can my cousin throw the ball? I think I have to subtract and my answer is 2 3/4 yards farther. Is this correct?
March 3, 2015

Math
Amy uses 8 cups of flour to make 3 identical loaves of bread.How much flour is in each loaf? I think it is division and I got 2 2/3 cups of flour. Is this correct?
March 3, 2015

Math
Sue's kitten eats 1/12 pound of food everyday. If Sue buys food in 5 pound bags, how many days does one bag of food last? I think I would divide and the answer would be 60 days is this correct?
March 3, 2015

Math
Bill can ride his bike 7 1/2 miles in a hour. a. How far will he ride in 3 hours? b. How far will he ride in 1/3 of an hour? I think for a. the answer is multiply so it would be 22 1/2 miles and for b. it would be 2 1/2 miles. Is this correct?
March 3, 2015

math
Mark is running 5 kilos. He decides to break the run into 3 equal lengths. How long will each length be? I think it would be 5 divided by 3 and my answer would be 1 2/3 for each length. Is this correct?
March 2, 2015

math
Thank you Ms Sue for your help. I meant to type dime instead of lime. So it should of been 192 dimes. That would make more sense.
March 2, 2015

Math
Tony wants to study 5 hours for the reading test. If he reads 1/3 hour per night, how many nights will he have to study? I think it is 5 divided by 1/3 so is it 15 nights that he would study?
March 2, 2015

math
a rectangle has a area 3 square feet and width 1/2 foot. What is the length of the rectangle? I think it is 3 times 1/2 equals 1 1/2 feet. Is this correct?
March 2, 2015

math
a rectangle has length 3 feet and width 1/4 foot. What is the area of the rectangle? I think it is 3 x 4 equals 12 feet. Is this correct?
March 2, 2015

Math
Bill has 180 coins. Of these coins, 1/12 are dimes. About how many dimes does he have? I think I have to divide . 180 divided by 1/12 equals 15 dimes that he has. Is this correct?
March 2, 2015

math
a lime weighs 1/12 ounce. Sue has 1 pound of limes. About how many limes does she have. I think I have to multiply 16 times 1/12 and I got 192 limes. Is this correct?
March 2, 2015

Electricity and magnetism
Thank you for your help. I am not sure what you mean by k.
February 23, 2015

Electricity and magnetism
A carbon atom's nucleus and its electrons become separated by 20nm. How much work does it take to separate them in Joules? In the previous problem if found that the magnitude of the force the nucleus feels towards the electrons is 2.07*10^11N. My first attempt was W=F*d = ...
February 23, 2015

PHYSICS Electricity
Maurice, I am having trouble too.
February 19, 2015

Social Studies
just to let you know i don't want the straight answer just an explanation
February 18, 2015

Social Studies
I am having trouble under standing these questions can someone please help? 11. What resources led to the appearance of the Industrial Revolution in New England? (5 points) 12. During the early 1800s, the United States tried to make peace with other countries in order to grow ...
February 18, 2015

Chemistry
What happens when sulphur reacts with iron? Does it make any colours before it turns dark grey? Does it do anything significant that I should need to know? I know that it is an exothermic reaction but is that it? Please help, Thanks.
February 12, 2015

chemistry
A moon rock collected by a U.S. Apollo mission is estimated to be 4.50 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of 206Pb per 1.150 g of 238U in the rock? The half-life of 238U is t1/2...
February 11, 2015

Chemistry
The average concentration of chloride ions (molar mass = 34.353) in seawater is 19.353 grams per kilogram. The maximum allowable concentration of chloride ion in drinking water is 250 ppm by mass. How many times as much chloride ion is there in seawater than the maximum amount...
January 22, 2015

Math
The container is coated with 2 layers of specialty paint that costs $6.05 per jar. Each jar of paint covers 800cm^2. How much does the paint cost?
January 21, 2015

Intermediate algebra
I need to simplify this rational expression and show the steps, please help.
January 11, 2015

Math
Find the value of csc theta for angle theta in standard position if the point at (5,-2) lies on its terminal side.
January 8, 2015

math
Graph f(x)=|x|^3
January 8, 2015

English
What genres, subjects, themes, settings, and characters has Mark Twain developed
January 7, 2015

Math
1) A car is traveling at a rate of 70 miles per hour. what is this speed in feet per minute. 2) Nina can braid 28 inches of rope in 1 hour. What is her speed in feet per hour? I am studying but I don't understand these questions. I have test tomorrow. Thank you.
December 14, 2014

Math
thank you very much
December 9, 2014

Math
thank you. please can you tell me how do you get 14 and 6 please. I want to understand. Thank you
December 9, 2014

Math
The price of a gallon of gasoline increased by 5 cents one week, decreased by 3 cents each of the next two weeks, and increased by 9 cents the fourth week. Find the average change in the price of gasolina for the 4 weeks.
December 9, 2014

English
Thank you!
October 26, 2014

English
Hi, I was wondering if this sentence has a comma splice? Before they get cold, grab that fluffy and heated towel, and dry them. Thanks in advance!
October 26, 2014

Algebra 2
what is an equation for the vertical translation of y=2x-1: 3/5 units up f) y=2x-2/5 g) y=2x-1/5 h) y=2x-8/5 I) y=2x+1/5
September 16, 2014

Algebra 2
what is an equation for each vertical translation of y=2x-1: 3/5 units up f) y=2x-2/5 g) y=2x-1/5 h) y=2x-8/5 I) y=2x+1/5
September 16, 2014

Algebra 2
how did you get 630km
August 30, 2014

Algebra 2
at 2 pm a freight train leaves a station and travels at 42 km/h. at 11pm and express train leaves the same station on a parallel track and travels at 105 km/h in the same direction. how far from the station will they meet?
August 30, 2014

geometry
in the proportion 2/8=8/32, which numbers is the geometric mean of the other two numbers?
June 17, 2014

Physics
A 0.2kg ball is attached to a rope and is whirled in a horizontal circle. Calculate the maximum speed of the ball if the length of the rope is 0.8m and its breaking strength is 0.9N
June 14, 2014

Physics
A wheel with radius of 25cm turning at 120 rpm uniformly increases its frequency to 660 rpm in 9s. Determine: i) the centripetal acceleration ii)the total acceleration of the system
June 14, 2014

science
calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution
June 8, 2014

chemistry
46,318.97
June 8, 2014

chemistry
calculate the mass of Cuso4.5H2O required to prepare 500 cm3 of a 0.400 m/dm-3 solution
June 8, 2014

Product MGT
At the grocery store, you buy a pack of 18 eggs and decide that when you get down to only 6 eggs you will buy another 18. In this scenario, what is your re order point? In this situation, what is your order quantity ?
April 29, 2014

math
Solve the equation z^2 + 2j = 0 Then convert solutions to Cartesian form.
April 12, 2014

Science
Which element would be most reactive? a. Al b. Cl c. P d. Na I initially thought that the answer was B, but I'm not sure about it. My second question is... Which non-metal is most reactive? a. Cl b. F c. I d. S I'm not sure about the answer for this one since all of ...
March 24, 2014

math
if f(x)=1-3x and g(x)=x^2-1, find : f(g(x))
March 22, 2014

math
if f(x)=1-3x and g(x)=x^2-1, find : g(g(x)), and g(f(x))
March 22, 2014

math
solve the equation 5coshx + 3sinhx = 4
March 22, 2014

science
Describe an experiment you might perform to determine which leg muscles of a frog are important for jumping long distances.
March 18, 2014

Math
Solve the inequality 4 ≤ 2c +7 ≤ 21
March 9, 2014

Math
Solve the inequality 4 ≤ 2c +7 ≤ 21
March 9, 2014

math
alice builds a model house she uses a scale of 1:20 the height of the real house is 10 meters. (i) what is the height of the model. the width of the model is 80cm (ii) what is the height of the real house
March 5, 2014

Math
Leah is buying curtains for her bedroom window. She wants the curtains to hang from the top of the window to the floor. The window is 4 feet high. The bottom of the window is 2 1/2 feet above the floor. What curtain length should Leah buy? a) 72 inches b) 78 inches c) 84 ...
February 27, 2014

science
liquid alcohol will change to vapor when its temperature reaches the A. boiling point B. fusing point C. freezing point D. melting point
January 30, 2014

science
a silver bar 0.125 meter long is subjected to a temperature change from 2oo degrees celsius to 100 degrees Celsius what will the length of the bar be after the temperature change
January 30, 2014

science
If the absolute temperature of gas is 600K, the temperature in degrees celsius is A.273 b.705c
January 30, 2014

literature
The story of The Wolf use.by Chief Pontiac is an example of A. a simile B. a myth c. personification
January 30, 2014

literature
When does the narrative of sojourner truth take place
January 30, 2014

English
If you consider The Call of the Wild to be an allegory, which one of the following statements would be true: Judge Miller represents the primordial condition.B Buck represents some characteristic of humanity
January 29, 2014

literature
In "A Pair of Silk Stockings," The silk stockings are a symbol of what
January 24, 2014

Math
4 in/sec = ? ft/h
January 22, 2014

physics
A 15.0 kg dart is thrown horizontally into a dartboard. The thrower applies a 80.0 N force over a distance of 88.2 cm in order to propel the dart. a) Calculate the work done by the dart thrower. b) Determine the velocity of the dart. c) If the dart went 4.50 cm into the ...
January 9, 2014

physics
We hang a mass of 500kg on a cylindrical steel rod of radius 0.5 cm and length 1 m. How much will the rod stretch? Young's modulus: steel 12*10^10 N/m^2. Now change steel to nylon. How much will it stretch? Nylon: 0.36*10^10 N/m^2. Thanks.
January 7, 2014

physics
What is the ratio of the spin angular momentum of the earth and its orbital angular momentum about the sun. The mean radius of the earth is R=6400km. The radius of the earth's orbit is r=1.5*10^8km. You may assume the mass of the earth is uniformly distributed throughout ...
January 6, 2014

math
The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble in my solution. Thanks for your help.
January 1, 2014

physics
The largest ballon ever flown had a volume of 53 million cubic feet. The thickness of the fabric is only 0.013mm. The balloon would reach an altitude of 150,000 ft. ( 46 km). The atmospheric pressure at that altitude is about 2*10^-3kg/m^3. The pressure of the helium was the ...
January 1, 2014

physics
I want to lift a 3000kg car with a hydraulic jack. With a lever, I can easily build up by hand a force = 300 N on a piston of 10cm^2 surface area. What area should the piston have that pushes the car? a. 1 cm^2; b. 10 cm^2; c. 100 cm^2; d. 1000cm^2 I answered with c. 100 cm^2 ...
January 1, 2014

physics
What is the radius of the event horizon (or Schwartzchild radius) of approximately 4 million solar masses at the center of our galaxy? A. 1200 m; B. 12*10^6 km; C. 12*10^9 km; D. 12*10^12 km.
December 30, 2013

physics
In an elastic 1 -dimensional collision, a mass m1=3 kg with velocity v1 = -4 m/s collides with a mass m2 = 5kg at rest. What are the velocities v1' and v2' after the collision? I would like to your method of solving this problem. Thanks.
December 28, 2013

physics
Thanks Elena for your help. I have been having trouble with some of these equations.
December 27, 2013

physics
We release an object of mass M at zero speed at a distance of 2*10^6 Km from the center of the earth. What is the speed at which the object hits the earth? G=6.67*10^-11; g= 9.8 m/s; M=5.97*10^24; r=6.3781*10^6 Suppose the mass of the object is M= 500 kg. What is the kinetic ...
December 27, 2013

physics
The density of liquid carbon dioxide is about 0.8 g/cm^3. What volume fraction inside the fire extinguisher (when it is full) is occupied by liquid CO2? The density of CO2 gas is negligible compared to the density of liquid CO2. Volume of fire extinguisher is 7.1*10^-3m^3; ...
December 24, 2013

physics
V (fire extinguisher) = 7.1*10^-3 m^3 Mass CO2 = 4.5 kg T =293 K Pressure = 60*10^5 Pa
December 23, 2013

physics
The density of liquid carbon dioxide is about 0.8 g/cm^3. What volume fraction inside the fire extinguisher (when full) is occupied by CO2? The density of CO2 gas is negligible compared to the density of liquid CO2. My answer was 75%. Please verify. Thanks.
December 23, 2013

Math
Evaluate the expression.Express the result in scientific notacion: (7.1x10^5)-(4.3x10^2)
December 16, 2013

Math URGENT
3.8y+4/7x+2=0 Please help me. Thanks
December 10, 2013

math
Last week, Jake spent 6 1/4 hours reading, and Julia spent 3/5 as many hours as Jake did. How many hours did Julia spent reading?
December 3, 2013

math
Last week, Charles spent 2 hours watching television. Madoline watched television for 2/5 as many hours as Charles did. How many hours did Madoline spend watching television?
December 3, 2013

chemistry
2.5g of magnesium is how many moles? How do i set it up? Help would be awesome thanks.
December 2, 2013

math
a man can row a bangka at a rate of 5 km/h in still water. It takes 10 minutes longer to row upstream a distance of 2km than he takes to row downstream. What is the rate of the current?
November 25, 2013

Find the value of K (Polynomial)
Dtermine the value of K such that -2 is cone root of the equation 2x^3+(K+1)x^2=4-x^2 I tried it a couple of times and I keep getting the wrong answer. The answer is K=3.
October 6, 2013

Math Factoring with 3 VARIABLES?!?!
a^2-b^2+8bc-16c^2 25-m^2-12mn-36n^2 x^2-a^2-y^2-2ay I know that you have to group them 3 and 1 and then you have to do difference of squares but I am utterly lost how to go about it. Please help!
October 5, 2013

Math
What is the perimeter of a regular hexagon with an area of 294ã3 ?
September 16, 2013

Integers
If x and y are positive integers and x/5 + y/8 = 17/20, what is the value of x + y?
September 16, 2013

Polynomial Functions
I don't have problems with the transformations. Just graphing the base function is my problem because I don't know the image points.
September 11, 2013

Polynomial Functions
I have to graph some graphs but I don't the main image points for the base function to make transformations. Specfically, f(x)=x^3 f(x)=x^4 f(x)=x^5 and it goes on. How do I find them to make my transformations?
September 11, 2013

English
Who is the Antagonist in Amy Tan's "A Pair of Tickets"? I know the Protagonist is June May but I couldn't figure out who the antagonist was. Yes, I have read the short story
September 11, 2013

math
a drapery panel measures 6 feet by 10 feet. Find how many square feet of material are needed for eight panels?
September 1, 2013

physics
A 1200W engine supplies a force of 90N to move an object at a constant velocity. With what velocity will it move?
August 15, 2013

Physics
A radioactive substance decays from 2.0kg to 1.6kg in 156 days. How long would it take to decay to 1.1kg?
August 7, 2013

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