Wednesday
March 29, 2017

# Posts by abby

Total # Posts: 1,125

calculus
Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 9 cubic feet per minute. If the pool has radius 3 feet and height 11 feet, what is the rate of change of the height of the water in the pool when the depth of the...
March 13, 2012

Math
If you had 4 blue blocks in a bag, how many red blocks would you have to put in to pull out the red ones 1/2 of the time
March 12, 2012

algebra
a ladder is leaning up against a wall. The ladder is 8 feet long and is 3 feet away from the base of the wall. find the angle the ladder makes with the wall.
March 11, 2012

Science-Space
Compare Earth and the moon in terms of size and surface gravity.Explain please. What is the relationship between the moon's surface gravity, lack of an atmosphere, and temperature range? Explain please!
March 6, 2012

calculus
the anti derivative is (m/2)x^2 - 1/3(x)^3 so if you use the 2nd fundamental theorem of calculus using (mx - x^2) over the interval (0,m) and set that equal to 8 (the interval is 0 to m because the function with the larger area is mx) you should get m^3 / 8 = 8. Solve for m ...
March 4, 2012

astronomy
Why cant I see the answer to this question!!!!!!!!!!
March 4, 2012

math
The second place finisher in the canoe race lost to the winner by only 1/12 of the winner,s time. If the winning time was 3 1/5 minutes,by how many seconds did the runner up lose?
February 27, 2012

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat ...
February 27, 2012

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat ...
February 27, 2012

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat of...
February 27, 2012

Physics
Yay! I got the same answer, and I tried to figure it out before you answered. Good. That makes me happy. Thank you!
February 27, 2012

Physics
I literally have no idea what this means. Do I do both sides and divide one side? This is confusing.
February 27, 2012

Physics
What volume of aluminum would be needed to balance a 1.00 cm^3 sample of copper on a 2 pan laboratory balance?
February 27, 2012

computer science
Class scores: Write a program that calculates the total grade for N classroom exercises as a percentage. The user should input the value for N followed by each of the N scores and totals. Calculate the overall percentage (sum of the total points earned divided by the total ...
February 23, 2012

physics
What power - in Watt-hours - is needed at home on your standard 115 V circuit to run: (a) a 10 A air conditioner for one hour to completely cool off your room, or (b) a 3 A electric fan to keep a constant flow of air over you for five hours? (c) Which is more efficient for you...
February 21, 2012

Math
The home that you purchased in 2004 steadily increased in value for the first four years at the annual rate of 5.3%. Then, the home steadily decreased in value for the next three years at the annual rate of 3.4%. If you originally purchased the home for \$160,000, what is its ...
February 17, 2012

Physics
a) What is the frequency of a photon of UV radiation ( = 2.00 x 10^-7 m)? When you input large numbers such as those in this problem, then input the numbers with parenthesis so as to obtain the correct answer. (b) Calculate the energy of a photon of UV radiation. When you ...
February 9, 2012

Physics
In black-and-white photography, a photon energy of about 4.00 x 10-19 J is needed to bring about the changes in the silver compounds used in the film. (a) What is the frequency of the light needed to bring about these changes? When you input large numbers such as those in this...
February 9, 2012

Physics
A monochromatic light source used in a diffraction experiment has a wavelength of 4.60 x 10- 7 m. (a) What is the frequency of this light? When you input large numbers such as those in this problem, then input the numbers with parenthesis so as to obtain the correct answer. (b...
February 9, 2012

Math
Write an inequality. Chondra made a \$65 withdrawl from her savings account which now has a balance LESS THAN \$500.
February 8, 2012

what do Net Force means?
February 7, 2012

math
what is A=____,b=8.1 mm,h=16mm
February 6, 2012

math
over 8 months,the value of Alana's investments dropped a total of \$56. What integer value represents the average monthly change in the value of her investments?
January 30, 2012

physics
You are at a baseball game and the pticher throws a fast ball that accelerates to the batter at 50 m/s^2. Assume that the baseball has a mass of 0.15 kg. How much force (in Newtons) must the batter apply to the ball to lay down a perfect bunt that stops dead in front of home ...
January 22, 2012

physics
An electric motor lifts an elevator 1.1 m in 13.0 s by exerting an upward force of 7.80 x 104 N. What power does the motor produce in kW?
January 20, 2012

math
True or false? Explain, all multiples of 3 are composite
January 18, 2012

American Politics
why is New Hampshire such a critical state in the presidential selection process?
January 10, 2012

geometry
Determine whether ABCD is a reactangle given each set of vertices. Justify your answer. 1. A(-3,1), B(-3,3), C(3,3), D(3,1)
December 7, 2011

physics
A home run is hit in such a way that the baseball just clears a wall 25.0 m high, located a distance 125 m from home plate. The ball is hit at an angle of 38.0° above the horizontal, and air resistance is negligible. (Assume the ball is hit at a height of 1.0 m above the ...
December 6, 2011

math
object is oblong measure's 16" round and tapers and is 21" round at wides whats the volume???
December 4, 2011

Chemistry
How would I make the VSEPR for potassium iodide (KI) I believe I made the right Lewis Structure, but am confused on what geometry a VSEPR structure would be. Thanks!
November 30, 2011

Physics
a) What will an object weigh on the Moon's surface if it weighs 500 N on Earth's surface? (b) How many Earth radii must this same object be from the center of Earth if it is to weigh the same as it does on the Moon? Alright, I know how to do part a. but I'm having ...
November 27, 2011

early childhood education
a teacher requests that a child use a small stepladder to reach a book on a shelf she is helping the child develop a)primitive reflexes b)movement qualities c)locomotor reflexes d)spatial awareness i put b which of the following is an example of a closed skill a)striking a ...
November 6, 2011

math
Well you forgot a part of the question so that doesnt help me at all
November 3, 2011

early childhood education
a childs ability to jump for distance is an example of a)agility b)flexibility c)explosive power d)reaction time i put b am i correct a child who has to struggle to climb into a chair is confronting an.......... hazard a)biological b)physical c)ergonomic d)environmental i put ...
November 1, 2011

SOCIAL STUDIES
Green Bay packers
October 27, 2011

simplify
simplify by removeing the factors of 1 7z-49/7z is the answer -7?
October 27, 2011

U.S. History
Gabriel Prosser’s rebellion was... a. a revolt by farmers in western Pennsylvania b. a revolt by enslaved people in Virginia c. a revolt by followers of Jefferson d.a revolt by citizens in Kentucky
October 27, 2011

MATH HEPL
lisa can shovel the drive way in 35 minutes john the same driveway in 45 how long will it a\take3e them together?
October 27, 2011

Help
lisa can shovel the drive way in 35 minutes john the same driveway in 45 how long will it a\take3e them together?
October 27, 2011

Help
Divide and simplify 6a+18/a-3 divide by a+3/a-4 I got 6a-24/a-3
October 27, 2011

Math
solve 6/y+4=5/y-4
October 26, 2011

Math
Determine whether the following statement makes sense or does not make sense, and explain your reasoning: When I'm trying to determine end behavior, it's the coefficient of the leading term of a polynomial function that I should inspect. A) This makes sense because the...
October 23, 2011

math
2160-500=1660 1660 divide by 20=83
October 18, 2011

spelling??
thank you Ms.Sue
October 18, 2011

spelling??
need a word with 5 letters, 3rd letter is a "g" the riddle is "amazing tricks that seem real"
October 18, 2011

i think the answer is 3 nickels .15 9 dimes .90 18 quarters 4.50 total 5.50
October 18, 2011

physics
Tangential velocity=radius of circle -:- angular speed=4-:-2=2m/s
October 18, 2011

writting
Thank you Ms. Sue and Writeacher.
October 10, 2011

writting
looking for help with apostrohe catastrophe in the following it is, use_________. if not,use_______ there is, use______. if not,use_______ who is, use________. if not, use______ they are, use______. if not, ____ or __ you are, use_______. if not, use_______ let us, use________...
October 10, 2011

math
1,500 and 1,800 There you go !!! Abby
October 5, 2011

Math
Find b such that (8x+1/b)-2=x has a solution set given by {3}. b =
October 4, 2011

antonyms
looking for antonym for "all" needs to be seven letters the 6th letter is an "n"
October 1, 2011

physics
Harry accidentally falls out of a helicopter that is traveling at 80 m/s. He plunges into a swimming pool 4 seconds later. Assuming no air resistance, what was the horizontal distance between Harry and the swimming pool when he fell from the helicopter?
September 29, 2011

accounting
Marks: 20 At the beginning of the fiscal year, ABC Clinic expected to treat 10,000 patients and estimated that it would incur \$1,000,000 in overhead. At fiscal year end data indicated that the clinic only saw 9,000 patients and incurred overhead of \$925,000.If the clinic used ...
September 28, 2011

Fractions
solve 9/10(3+8x)+3¡Ý15 How do you multiply the fraction?
September 23, 2011

Geometry
Two supplementary angles are in the ratio 7:11. Find the measure of the smaller angle.
September 22, 2011

Science
Why whales live in oceans?
September 21, 2011

Science
Ibook batteries last for 5 hours What is the independent and dependent variable? What is the control group?
September 12, 2011

Physics
Simpson drives his car with an average velocity of 45.1 km/h to the east. How long will it take him to drive 153 km on a straight highway? Answer in units of h
September 8, 2011

Language
Thank you so much! May i ask what you do for a living?
August 29, 2011

Language
I think its , danced across the sky
August 29, 2011

Language
What is the predicate in the following sentences? The glowing stars danced across the sky. Camping is a lot of fun when you have a friend with you.
August 29, 2011

math
what is 8+10+2/12+4/9 in lowest term if possible
July 30, 2011

Chemistry!
A Galvanic cell runs on the following reaction: Co (s) + Cu2+ (aq) → Co2+ (aq) + Cu (s) Draw a diagram for this Galvanic cell, labeling the electron flow, the anode and cathode, and the positive and negative sides of the Galvanic cell.
June 30, 2011

ANOTHER SCIENCE
Consider the following reaction that has reached equilibrium: NH3 (aq) + C2H4O2 (aq) ! NH4+ (aq) + C2H3O2- (aq) ∆H = -102.1 kJ a. What will happen to the concentration of NH4+ (aq) if the temperature is raised? b. What will happen to the concentration of NH4+ (aq) if the...
June 30, 2011

Science
The following reaction: 2SO3 (g) ! 2SO2 (g) + O2 (g) has an equilibrium constant equal to 0.23 M. If the following concentrations are present: [SO2] =0.480 M, [O2] = 0.561 M, [SO3] = 0.220 M, is the reaction at equilibrium? If not, which way must it shift to reach equilibrium?
June 30, 2011

Chemistry
Write a balanced net ionic equation for the oxidation of metallic copper to Cu(II) ion by hot concentrated H2SO4, in which the sulfur is reduced to SO2
June 29, 2011

Chemistry
moles would be 118g divided by 342.3?
June 29, 2011

chemistry
0.5 M1V1=M2V2
June 27, 2011

chemistry
how many milliliters of hydrogen at 0 degree C and 1400 mmhg are produced if 15g of magnesium reacts with sulfuric acid?
June 16, 2011

math
0.00186 L of SO2
May 25, 2011

The 5th Wave If i stay Walk Two Moons
May 24, 2011

Math
M=1.05
May 6, 2011

Math
1.05
May 6, 2011

Algebra
Members of the Lake Shawnee club pay \$40 per summer season plus \$7.50 each time they rent a boat. Nonmembers pay \$12.50 each time they rent a boat. How many times would both a member and a nonmember have to rent a boat in order to pay the same amount?
May 6, 2011

creative writing
Is there a personification example in the song: Did You Ever Know That You're My Hero
May 5, 2011

Math
Perform the following multiplication. Be sure answers are reduced to lowest terms. (Enter as an improper fraction.) 2 1/2 x 1 3/8 =
May 3, 2011

Biology
physical obstacles
May 2, 2011

physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 s...
April 8, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
April 7, 2011

Physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 s...
April 7, 2011

Physics
it is π (pi)
April 7, 2011

Physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2 J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 ...
April 7, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 5, 2011

Physics
An air rifle is used to shoot 1.0 g particles at 100 m/s through a hole of diameter 2.0 mm. How far from the rifle must an observer be to see the beam spread by 1.0 cm because of the uncertainty principle? Compare this answer with the diameter of the universe (  1026 m).
April 5, 2011

Physics
To what voltages must we accelerate electrons (as in an electron microscope, for example) if we wish to resolve; a) a virus of diameter 12 nm , b) an atom of 0.12 nm, c) a proton of diameter 1.2 fm?
April 4, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 3, 2011

math
6x48,7x47,8x46,9x45,10x44,11x43,12x42
March 30, 2011

Physics
Two converging lenses with focal lengths 5 cm and 30 cm are placed 35 cm apart. Rays from a very distant object are impinged on the lens system parallel to the principal axis. What is the refractive power of the combination of these two lenses?
March 26, 2011

Pre Calc
Thanks so much guys!!!!
March 23, 2011

Pre Calc
tan(x)=5 sin(x) for interval -π < x < π A) 0, 1.571 B) -1.571, 0, 1.571 C) -1.369, 0, 1.369 D) 0, 1.369
March 23, 2011

geometry
A guy wire is attached to the top of a 75 meter tower & meets the ground at a 65 degree angle. How long is the wire?
March 23, 2011

Math
tan(x)=5 sin(x) for interval -π < x < π
March 23, 2011

Physics
A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an electron, photon+electron produce positron+electron+electron The two electrons and the positron move off with identical momenta in the direction of the ...
March 22, 2011

Physics
The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation emitted from your skin?
March 22, 2011

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