Thursday
July 2, 2015

Posts by Madison


Total # Posts: 351

Physics
A woman 2.00 m tall stands 3.5 m in front of a plane mirror. (a) What is the minimum height the mirror must be to allow the woman to view her complete image from head to foot? Assume that her eyes are 10 cm below the top of her head.(b) What would be the required minimum ...
February 13, 2013

Physics
A woman fixing her hair holds a plane mirror 30 cm away from the front of her face so as to look into a plane mirror on the bathroom wall behind her. She is 90 cm from the wall mirror. Approximately how far does the image of the back of her head appear in front of her?
February 13, 2013

Math
What is the rule for 2 to 3 and 9 24.
February 12, 2013

dakota valley
what is areoglhmet
February 12, 2013

physics
(part 1) An athlete whirls an 8.1 kg hammer tied to the end of a 1.4 m chain in a horizontal circle. The hammer moves at the rate of 0.597 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain. Answer in ...
February 12, 2013

Physics
An Olympic skier moving at 19 m/s down a 26 degree slope encounters a region of wet snow and slides 136 m before coming to a halt. What is the coefficient of friction between the skis and the snow? ( g = 9.81 m/s2)
January 27, 2013

Math
4y is 55 percent of what number
January 7, 2013

Math
I have a garden that is 50 ft x 18 ft and my friend has a garden that is 30 ft X 15 ft. Why is the area of my garden twice the size of my friend's garden?
December 11, 2012

Science
as you push a lawn mower , the horizontal force is 300n, if you push the mower a distance of 500m, how much work do you do?
November 18, 2012

physics pre-ap
A(n) 1100 kg car is parked on a 4 incline. The acceleration of gravity is 9.8 m/s2 . Find the force of friction keeping the car from sliding down the incline. Answer in units of N
November 15, 2012

Physics
The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -72°C to +38°C. (a) How much does the steel pipeline expand due to the difference in temperature? (The coefficient of linear ...
November 14, 2012

Intro to Physics
The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -72°C to +38°C. (a) How much does the steel pipeline expand due to the difference in temperature? (The coefficient of linear ...
November 14, 2012

Intro to Physics
(a) An ideal gas occupies a volume of 3.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. _____________molecules (b) If the pressure of the 3.0-cm3 volume is reduced to 2.4 × 10−11 Pa (an extremely good vacuum) ...
November 14, 2012

Intro to Physics
An air bubble has a volume of 1.65 cm3 when it is released by a submarine 105 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume the temperature and the number of air molecules in the bubble remain constant during its ascent. ...
November 14, 2012

Intro to Physics
At what temperature would the rms speed of a nitrogen atom equal the following speeds? (Note: The mass of a nitrogen atom is 2.324 10-26 kg.) (a) the escape speed from Earth, 1.12 104 m/s ___________K (b) the escape speed from the Moon, 2.37 103 m/s ___________K
November 14, 2012

science
About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the Hardy-Weinberg ...
November 10, 2012

chemistry
How many moles are in 4.80 grams on SnO2?
November 1, 2012

math
John has traveled from a distant planet to spend one earth year visiting with us. However, one year on earth is not the same as one year on john's planet. on john's planet: 10 seconds = 1 minute 10 minutes = 1 hour 10 hours = 1 day 10 days = 1 week 10 weeks = 1 month ...
October 18, 2012

Health
Empty calories are defined as ________. A. Calories from dairy products only B. Calories from low-fat foods and/or fruits and vegetables C. Calories from water and other foods or beverages that have zero calories D. Calories from solid fats and/or added sugars
October 16, 2012

physics
determine the tension in each cable below. draw a force diagram for the system before solving the problem. Case A- ball suspended on one cable Case B- ball suspended on by two cables
October 11, 2012

trig
Find the following values for each function a. f(0) b. f(-1) c. f(-x) d. f(x+1) f(x)=2x^2+3x-4 I you plug in the value for each x, I just want to check my answers. Thanks.
October 9, 2012

Math
Find (fog)(2) and (gof)(-2) f(x)=Square root of 4-x; g(x)=1-3x^2 Show work.
October 9, 2012

health
The key to using a pedometer to meet the Physical Activity Guidelines for Americans is to _________. A. First set a time goal and then calculate how many steps are needed each day to reach that goal B. First set a time goal and then calculate how rigorous the steps need to be ...
October 5, 2012

managerial economics
You sell 1/3 of the world an iphone at $400. 1/3 a year later for $300.00 and after 1/3 of the world at $250. Those people would not buy unless price is dropped so you get your initial huge profit on the coustomers that can not wait then continue to drop price until all ...
September 30, 2012

math
If you have 30 white lego bricks, 42 red lego bricks, and 45 black lego bricks and you pull them out of a bag one at a time until one is left, what is the probability the last brick will be black
September 19, 2012

Math ASAP
I think 6 an 8 are right
September 19, 2012

Math ASAP
1.-80%(-2) (=,<,>) 120/3 2.-1750%70 (=,<,>) -1008/48 3.240/-80 (=,<,>) -150/50 4.675/-45 (=,<,>) 865/-51 5.-3755%x= -15 6.22=x%(-34) X=-748 7.x%(-17)=-35 8.-680 % x =53 X=-13
September 19, 2012

Math
ASAP NEED HELP FAST PLZZ
September 19, 2012

Math
1.-80%(-2) (=,<,>) 120/3 2.-1750%70 (=,<,>) -1008/48 3.240/-80 (=,<,>) -150/50 4.675/-45 (=,<,>) 865/-51 5.-3755%x= -15 6.22=x%(-34) X=-748 7.x%(-17)=-35 8.-680 % x =53 X=-13
September 19, 2012

5th grade religion
no it doesnt
September 5, 2012

5th grade religion
For whom do members of the JVC works? plz don't give me an answer to look at on wikapieda that website does not tell the truth thanks
September 5, 2012

5th grade religion
For whom do members of the JVC work?
September 5, 2012

math
they have to take the 25 out there there is no 25 in the first number
September 5, 2012

math
they put in the 25 and there is know 25 in the first number
September 5, 2012

5th grade religion
jvc what year was the organizaion founded?
September 5, 2012

english
Imperative Interrogative Declarative Exclamatory 1.what a ball game this 2.Wear your boots in the rain. imperative
September 4, 2012

Geometry
If
August 21, 2012

chemistry
If 3.20 kg of Sulphur reacts with oxygen, calculate the volume in millileters of sulphur dioxide gas formed at 30.5 degrees Celsius and 1.04 atm.
June 9, 2012

Physics
Volume of 1200 L of helium at 4000 Pa is heated from 45.0°C to 75.0°C increasing the pressure to 6000 Pa. What is the resulting volume of gas?
April 11, 2012

Physics
Given 435 in^3 of nitrogen at 1340psi (absolute) at 72.0°F. Find the volume at 1150psi at 45.0°F.
April 11, 2012

Physics
A welding tank has a gauge pressure of 2000psi at 40.0°F. What is the new gauge pressure if the temperature rises to 100°F?
April 11, 2012

Physics
Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
April 11, 2012

Physics
Some propane occupies 150 cm^3 at 12.4°C. Find the temperature when its volume is 132ft^3 if the pressure remains constant.
April 11, 2012

Physics
Some hydrogen occupies 120 ft at 60.0°F. Find the temperature when its volume is 132ft^3 if the pressure remains constant.
April 11, 2012

math
a jar contains 27 blue blocks 18 red blocks 12 orange blocks and 43 green blocks You put your hand in the jar and without looking pull out a block. About what fraction on the time would you expect to get a red block?
April 10, 2012

Physics
How many kcal of heat are required to vaporize 25.0kg of water at 100°C?
April 2, 2012

Physics
Find the increase in Volume of 50.0L of acetone when heated from 40.0°C to 75.5°C.
April 2, 2012

Physics
How many Btu of heat must be added to 900lbs of steel to raise its temperature from 20.0°F to 500°F? Specific heat of steel .115Btu/lb°F
April 2, 2012

Physics
A Brass rod 50.0 cm long expands 0.0734 cm when heated. Find the temperature change.
April 2, 2012

Physics
A 100 kg steam boiler is made of steel and contains 200 kg of water at 5.00°C. How much heat is required to raise the temperature of both the boiler and water to 100°C? The specific heat of Steel is 0.115kcal/kg°C. The specific heat of Water is 1.00kcal/kg°C
April 2, 2012

math
if you have a piece of string 11 ft. long and you cut it into 15 equal pieces how long will each piece be?
February 13, 2012

Physics
A ball is thrown horizontally from the top of a building 21.6 m high. The ball strikes the ground at a point 123 m from the base of the building. Find the x component of its velocity just before it strikes the ground. Find the y component of its velocity just before it strikes...
February 4, 2012

Math
Pamela and David walk on the same track. It takes Pamela 9 minutes and David 6 minutes to walk one lap. If they start walking at the same time, how many laps will each have walked when they cross the starting point together for the first time?
February 1, 2012

math
If I have a 66% in algebra Android we took a exam that's worth 20% of our grade Android I got a 54% on the multiple choice what would my average grade be?
December 14, 2011

algebra 2nd grade
10
December 12, 2011

Career planning
I chose D- All of the above
December 6, 2011

Math
I'm so lost.
November 15, 2011

geometry
Which of the following statements is true?Select one of the options below as your answer:A. A 25o angle is congruent to a 25o angle. B. Two intersecting lines form two pairs of congruent angles. C. It is possible for congruent angles to add up to 90o. D. All of the above are ...
November 8, 2011

9th grade Biology
4. After the temperature reaches 33 degrees Celcius, the rate of photosynthesis declines. Using knowledge of enzymes, explain why this happens. 6. As the amound of CO2 increases, what would happen to the rate of photosynthesis? And as the amount of CO2 increases, would the ...
October 27, 2011

Algebra 2
Find the coordinates of the vertices of the parallelogram with sides that are contained in the lines with equations y=3, y=7, y=2x, y=2x-13
October 23, 2011

Math
2989/7*2
October 23, 2011

canyons,dunes,and deltas SCIENCE
Weathering
October 13, 2011

Physics
A bicycle is moving at a constant speed of 12m/s as it covers a distance of 200m. it then applies its brakes and stops over the next 350m. how much time doe sthis total motion take?
October 7, 2011

Math
?? huh
September 29, 2011

Math
6 ways
September 29, 2011

Geometry
how do you solve using midpoint equation if you only have one pair of points? like to use midpoint equation you usually get two points (4,3) and (5,2) but ive been given only one point (3,1). how do i solve for midpoint with only one set of points? help please
September 29, 2011

science
What keeps proteins within the bilayer?
September 27, 2011

chemistry 1
From data below, calculate the total heat (J) needed to convert 0.757 mol of gaseous ethanol (C2H6O) at 151°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C cgas 1.43 J/g·°C cliquid 2.45 J/g·°C ΔH°vap ...
September 27, 2011

physics
a quarterback throws a pass to a receiver. the release point for the football is 1.8 m above the ground. he projects the ball with a speed of 20 m/s at an angle of 40 above the horizontal. If the pass falls incomplete, how long is it in the air? If the pass falls incomplete, ...
September 20, 2011

Math
simplify 14/22
August 18, 2011

Math
simplify 64/76
August 18, 2011

Math
simplify 13/17
August 18, 2011

Math
Simplify -17/21.
August 18, 2011

chemistry
A piece of copper wire has a density of 8.9 g/cm3. What is the density of a chunk of copper that has a mass of 250 grams?
June 25, 2011

geometry
line segment AB and XY are congruent. if AB=5N-8 and XY= 2n+19 what is the legth of AB?
June 22, 2011

chemistry
what are some examples of suspensions?
June 1, 2011

MATH
20
June 1, 2011

Chemistry
Will you check this answer for me? the half-life of strontium-87 is 2.8hr. What percentage of this isotope will remain after 8 hours and 24 minutes? ?? 34%
May 25, 2011

Pre-Calc
A hall 200 feet in length is to be designed as an ellipse if the foci are 35 feet from the center. How high will the ceiling be from the center?
May 11, 2011

Pre-Calc
A mirror is in the shape of a paraboloid. If a light source is 6 feet from the base along the axis of symmetry and the opening is 12 feet across, how deep should the mirror be?
May 11, 2011

math
Colin is working to earn some money for a new cd player. On Saturday he earned half as much as he did on Sunday, but twice as much as he did on Friday. During those three days he earned $70. How much did he earn each day?
April 11, 2011

5th grd math- metric conversion
30m=6000
March 7, 2011

probability
I was asked to find the probaility if a board game uses the deck of 20 cards. And find how many have the number 3. I came up with 4/20 and was told that I'm on the right track but I need to find P(3 and 3) with replacement and without replacement. What does this mean?
February 14, 2011

Probability
How do I determine the probability of selecting a card greater than 9 or a black card?
February 8, 2011

probability
The odds against Paul Phillips winning the 100 yard dash are 7:2. Determine the probability that: • a) Paul wins. • b) Paul does not win. How do I set this up to find out the equation/answer?
February 1, 2011

chemistry
4. Use the pressure of the butane gas (your answer from question #3 above), along with the temperature and volume recorded in the lab, to determine the moles of butane gas collected in the lab. You will use the ideal gas law (and the ideal gas constant, R) for this calculation...
February 1, 2011

Math
Would the set up be [(p-->q)^~p]-->~q
January 21, 2011

Math
If you pass general chemistry, then you can take organic chemistry. You pass general chemistry. ˆ You can take organic chemistry. Let P = you pass general chemistry Let Q = you can take organic chemistry I came up with P - >Q P therefore Q But my set up is wrong...
January 21, 2011

precalc
f(x)=Log1/3^(9x)find the domain and range.
January 14, 2011

chemistry
consider the following reaction: 2C2H6(g)+7O2 (g)-->4CO2(g)+6H2O (g) delta H = -3120kJ If 3.00g of ethane are burned, how many kJ of heat are produced?
January 13, 2011

chemistry
consider the following reaction: C3H8 (g)+ 5O2 (g)--> 3CO2 (g)+ 4H20 (g) Delta H = -2440kJ The heat of formation of CO2 is -390 kJ/mol and the heat of formation of H2O is -240 kJ/mol. What is the heat of formation of propane?
January 13, 2011

chemistry
the following reaction is carried out in a bomb calorimeter: 4NH3 (g) +5O2 (g)-->4NO (g)+6H2O (g) The calorimeter constant is 45.0kJ/K. when 34.0g of NH3 are reacted in the calorimeter, the temp rises by 10 degrees C. What is the change in energy, delta E, for the rxn?"
January 13, 2011

Math
Time's 5
January 13, 2011

Spanish
when you are talking in past tense. for example: you went swimming yesterday.
January 9, 2011

Chemistry-Help!!
If I have 10mL of 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?
December 7, 2010

Chemistry-Confused!!
You have 10mL of a 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?
December 7, 2010

MATH HELP!!
what is the unit rate for 67.92 for 4gal
December 6, 2010

Chemistry-urgent!
Yes, but would that give me 63 mL or 250 mL. That's where I get confused.
November 30, 2010

Chemistry-urgent!
What volume of 2.5% (w/v) KOH can be prepared from 125 mL of a 5.0% KOH solution?
November 30, 2010

Chemistry/Science - please help!
An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid) is placed in a dialyzing bag and immersed in distilled water. Which of the following correctly describes the location of the indicated substance after dialysis? A-albumin, inside B-starch ...
November 30, 2010

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