Sunday
December 4, 2016

# Posts by Daniel

Total # Posts: 1,068

geometry
Let $\overline{PQ}$, $\overline{RS}$, and $\overline{TU}$ be parallel chords of a circle. The distance between chords $\overline{PQ}$ and $\overline{RS}$ is 4, and the distance between chords $\overline{RS}$ and $\overline{TU}$ is also 4. If $PQ = 78$ and $TU = 50$, then find...
December 6, 2015

Algebra
December 4, 2015

Physics
As usual, a drag coefficient of 0.5 is a reasonable guess. A cyclist going at a steady speed is mostly working to keep drag from slowing them down (rolling friction plays a part but is much smaller). Estimate what the power output is of a cyclist going at 40 km/hr.
December 2, 2015

Algebra 1- Just one question please :)
December 1, 2015

Math
A strees light L hangs H feet above a flat straight street. A person h feet tall at point O directly under the street light at time t=0 seconds, moves in a straight line along the street a v feet/second. If H=20 feet, h=6 feet, and v=4 miles per hour, find the velocity v of ...
November 30, 2015

Math
A spherical balloon expands uniformly as it is inflated. The radius of the balloon in r meters at time t seconds. Find the radius, the volume, and the surface area of the balloon when the rates of increase of the surface area of the balloon and the radius are numerically equal
November 30, 2015

Math
After school, Laura baby sits a neighbor's child for 50 minutes. They rest for 10 minutes,read for 15 minutes,and play the rest of the time. Write the total baby sitting time, the resting time and reading time, as fractions of an hour.
November 30, 2015

Math/Fractions
After school, Laura baby sits a neighbor's child for 50 minutes. They rest for 10 minutes,read for 15 minutes,and play the rest of the time. Write the total baby sitting time, the resting time and reading time, as fractions of an hour.
November 30, 2015

Math
4/10 of a mile from Jose's house to the school.
November 30, 2015

Math
Shawn rides his bicycle 9/10 mile to school. On his way to school, he stops at Mike's house, which is 1/5 mile from Shawn's house. Then they both ride to José house, which is 2/7 mile from Mike's house. How far is it from Jose's house to the school?
November 30, 2015

Math
Suppose that a cyclist began a 510 mi ride across a state at the western edge of the state at the same that a car traveling toward it leaves the eastern end of the state if the bicycle and car met after 8.5 hr and the car traveled 33.4 mph faster than the bicycle find average ...
November 29, 2015

Math
Suppose that a cyclist began a 450 mi ride across a state at the western edge of the state, at the same time that a car traveling toward it leaves the eastern end of the state. If the bicycle and car met after 7.5 hr and the car traveled 30.4 mph faster than the bicycle, find ...
November 29, 2015

College Physics
a man pushes a lawn mower 50 feet in 5 second by exerting a force of 30 pounds at an angle of 53 with the horizon. find the work done and the average power expended?
November 27, 2015

College Physics
a man pushes a lawn mower 50 feet in 5 second by exerting a force of 30 pounds at an angle of 53
November 27, 2015

Physics
3. A low friction cart (similar to what you use in the lab) collides with a second low friction cart. Cart A has a mass of 0.500 kg and cart B has a mass of 0.750 kg. Glider A was moving at 40.0 cm/s before the collision. Glider B was at rest. (a) The carts have velcro on them...
November 23, 2015

Physics
One end of a spring is attached to the ceiling. The unstretched length of the spring is 10.0 cm. A 2.0 kg mass is hung from the other end of the spring. It is slowly lowered until it comes to rest. At this point the spring is 15 cm long. (a) What is the stiffness (spring ...
November 23, 2015

math fractions
Sherry spent 1/5 of her money on school supplies and 3/8 of the remainder on a CD player. She had $25 left. How much money did she have at first? do not use algebra November 19, 2015 Algebra right/ November 17, 2015 History vocabulary I have looked every where. I am in honors 7th grade history. Help please I need a sentence with the word mullah and jihad? November 17, 2015 Physics A car is traveling North. In which direction are the wheels turning. This is under the torque chapter October 24, 2015 Physics A car is traveling North. In which direction are the wheels turning. This is under the torque chapter October 24, 2015 chemistry 2.17kcal October 24, 2015 physics There is a car turning on an unbanked road. The mass of the car is 2000kg moving at constant speed 36mph. The radius of the unbanked curve is 100m. the driver sees an obstacle at 20m ahead along the curve. he presses the brakes and expects to have a constant deceleration along... October 23, 2015 MATH One half of a number minus 9 is 14 October 22, 2015 St Eugene university Solve x^2 times second derivative -3x times first derivative -5y =sin(logx) my solution is integrating both sides we have sinxlogx October 17, 2015 physics A ball starts at the top of a ramp with an incline of 7 degrees and rolls down, picking up speed. (see the table below) Time (s) Position (m) 0 0 .4917 .1 .7625 .15 .975 .3 1.1583 .45 1.2833 1.6467 (a) Linearize the data and find the slope of the new line. [Slope=.3745?] (b) ... September 30, 2015 biology what is the difference between an exergonic reaction and an endergonic reaction? September 24, 2015 Ap world history lack of wars September 16, 2015 Chemistry 1. What volume of nitric acid solution with mass fraction of 16% is required to make make 250ml solution with 0.2mole/l? September 15, 2015 Political Science Does the representation system in the U.S. Senate still make sense today? Why or why not? August 28, 2015 Political Science Develop an argument for a strong national government, or for greater state sovereignty and independence. August 28, 2015 PHIL324L reinterpreting motives August 19, 2015 English There should be more pe taught in school each week - rhetorical question June 27, 2015 solving two-step inequality Translate the following inequality into written language. 5x-6<14 June 9, 2015 Math 12 hours June 6, 2015 chemistry Can methane and oxygen be separated. If yes, can anyone please mention the method May 11, 2015 Physics 28.8 m/s May 5, 2015 Statistics A particular fruit's weights are normally distributed, with a mean of 353 grams and a standard deviation of 6 grams. If you pick one fruit at random, what is the probability that it will weigh between 334 grams and 344 grams? May 4, 2015 Math 9121518 April 30, 2015 Physics A ball rolls off the edge of a 0.75m high lab table with a horizontal speed of 1.50 m/s. Calculate the time that the ball is in flight, calculate the vertical velocity of the ball just before striking the floor, and calculate the horizontal distance(range) that the ball will ... April 16, 2015 Algebra 2 math In triangle GHI, angle H is a right angle, GH = 40, and cos G= 40/41. Draw a diagram and find each value in fraction and in decimal form. a) Sin G b. Sin I c. Cot G d. csc G e. cos I f. sec H - I have no idea how to do this April 8, 2015 age question A man is 24 years when his son was born. Now he is three times as old as his son. Find the age of the son. April 3, 2015 Social Studies Not to be rude or anything March 30, 2015 Social Studies I don't really know why it is that that answer was right, I just know that it was right. March 30, 2015 Social Studies Lol I accidentally submitted it and got it right. Its D. Its industrial Base March 30, 2015 Social Studies What was one of the main advantage of the South? A.) A small population of free men B.) The Strong support of its white population C.) Its belief in states' rights D.) Its industrial base I think its either C or D March 30, 2015 Physical science Nail polish fist and water second spirit is third and ethanol is last March 25, 2015 Literacy 10 facts about sugar from Belize March 22, 2015 Geology Rank the following three types of sedimentary rocks in terms of rate of sedimentation from highest (1) to lowest (3) by assigning numbers 1 to 3 to the following: A) Limestone B) Chert C) Sandstone March 16, 2015 EES Name a mineral or rock that has more than one element and how humans use it in everyday life March 16, 2015 Maths The red ribbon is 27 cm long. the red ribbon is three times the length of blue. What is the length of blue? March 6, 2015 chemistry is it 2.5 February 28, 2015 Algebraic expression translate 20 split evenly with a number into an algebraic expression February 26, 2015 History Identify another name given to the Muslim invaders. February 25, 2015 Statistics A vending machine pours an average of 8.0 oz of coffee with a standard deviation of 0.2 oz if it is functioning properly. An inspector wants to take 16 cups of coffee from the machine to see if the machine is functioning well or not. He wants to have a significance level of 4... February 24, 2015 life oreintation Show link between intrapersonal conflict and initiating relationship? February 23, 2015 Physics An object experiences a constant acceleration of 4.0 m/s2 along the −x axis for 4s, obtaining a velocity of 31 m/s in a direction 30° from the +x axis. Find the initial velocity vector of the object. (The angle of the object is measured counterclockwise from the +x-... February 23, 2015 morakolo sec To what extent can interpersonal conflict affect communication in a relationship?. February 22, 2015 Finance No,lose$84,658.62
February 19, 2015

physics
a projectile is thrown from the ground with an initial velocity of 20.0m/s at an angle of 40 degrees above the horizontal, find the maximum height,the time required to reach its maximum height,c) it velocity at the top of the trajectory.d) the range of the projectile,e) the ...
February 19, 2015

Math
34 meters
January 26, 2015

Chemistry (Electrochemistry)
Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M TI3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find the endpoint. F=96486.7 Cmol E0 Sn4+/Sn2+ =0.15V E0 TI3+/TI+ = 1.28 Esce = 0.241V R=8.3141 J K Mol (a) Write the balanced reaction. Sn4+ + 2e- <...
January 21, 2015

Chemistry (Acid-Base)
Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL of benzene at (a) pH 4...
January 21, 2015

Chemistry
Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL of benzene at (a) pH 4...
January 19, 2015

Chemistry
In water at 25°C, which of the following is the most basic solution? a) pH = 3 b) pH = 0 c) [OH-] = 10-13 M d) [H3O+] = 10-13 M My assumption is is OH- 10^-13, but I am not confident, is this some sort of trick question?
January 19, 2015

physics
A person is standing on and facing the front of a stationary skateboard while holding a construction brick. The mass of the person is 87.0 kg, the mass of the skateboard is 4.10 kg, and the mass of the brick is 2.50 kg. If the person throws the brick forward (in the direction ...
January 15, 2015

physics
An object is moving so that its kinetic energy is 198 J and the magnitude of its momentum is 13 . 1 kg · m / s. Determine the speed of the object. Answer in units of m / s.
January 13, 2015

Chemistry
An EDTA solution is standardised against high-purity CaCO3 by dissolving 0.4835 g CaCO3 in HCl, adjusting the pH to 10 with ammoniacal buffer and titrated with an EDTA solution. If 35.18ml were required for the titration, what was the molarity of the EDTA solution? Step 1. ...
January 11, 2015

Chemistry
Please help, I can't do this and its stressing me out ?!?! A 25.0 mL aliquot of an aqeuous quinine solution was diluted to 50.0mL and was found to have an absorbance of 0.832 at 348nm when measured in 2.00cm cell. A second 25.0mL aliquot was mixed with 10.0ml of a solution...
January 10, 2015

physics
What is friction
January 6, 2015

i think 8 is character vs character i think 9 is the last one and 10 is hostility. do you have 1 and 2? i need those
January 4, 2015

Calculus
The function h(x) = x^3+bx+d has a critical point at (2,-4). Determine the constants b and d and find the equation of h(x). I'm very confused and I do not have any idea on what the first step is.
January 2, 2015

Calculus
The function h(x) = x^3+bx+d has a critical point at (2,-4). Determine the constants b and d and find the equation of h(x). Show your work.
January 2, 2015

physics
what is retardation
December 10, 2014

PHYSICS : I NEED HELP PLEASE
a man pushes a lawn mower 50 feet in 5 second by exerting a force of 30 pounds at an angle of 53
December 6, 2014

math
help: Two travelers start simultaneously in two cities A and B, and go to meet each other. The part of A walk 1 km on the first day , the second day 2 km , 3 km on the third day , and so on. The part of B walk 20 miles the first day, the second day 18 km , 16 km on the third ...
December 2, 2014

chem due soon
The ΔH of the reaction below is -575.13 kJ. Is this reaction spontaneous? 2ZnS + 3O2 + C → 2SO2 + 2Zn + CO2 A. It is not because the ΔH of the reaction is negative. B. It is because the ΔH of the reaction is negative. C. It depends on the temperature ...
December 1, 2014

chem due soon
At temperatures above 0°C, what is the sign of the change in free energy for the conversion of liquid water to ice? A. Positive B. Zero C. Negative D. Not known
December 1, 2014

Science.. Need help ASAP!
December 1, 2014

english
what are the ideas proposed in “Civil Disobedience.” I need to choose one and make a letter.
December 1, 2014

history
No, not during the war, after it. With the poor economy women had difficult finding any work outside of home.
November 29, 2014

history
Postwar America (1918-1920) faced social change. Explain in 3-5 sentences the changes that occurred at this time.
November 29, 2014

physics
Density of copper= 8960 kg/m^3 " " "" water = 1000 kg/m^3 v= √(T/ρ)= λf λ= 1/f1 √(T1/ρ)= 1/f2 √(T2/ρ) 1 is before submersion and 2 is after f2= f1 √(T2/T1) T2= T1-B B is the buoyant force B= ρ(w)V(w)g (w...
November 29, 2014

spanish don't know which to choose
spanish cutures
November 28, 2014

spanish don't know which to choose
A simple route to appreciate other languages and cultures is to explore how your own language and culture have been influenced by other cultures. To help you do this, take a few minutes and discuss in Spanish (1-2 paragraphs) aspects your culture has borrowed from Spanish ...
November 28, 2014

chemistry
At temperatures above 0°C, what is the sign of the change in free energy for the conversion of liquid water to ice? A. Positive B. Zero C. Negative D. Not known
November 27, 2014

physics
A proton moves with a velocity V (2i - 4 j + k) m / s in a region where the field is given by B = (i + 2 j -3k) T . What is the magnitude of the magnetic force experienced by the load?
November 23, 2014

physics
Moving fast proton of 4x106 m / s through a 1.7 T magnetic field experiences a force 8x10-13N magnetic. What is the angle between the velocity vector associated with the proton and the magnetic field?
November 23, 2014

physics
8.0E5J
November 19, 2014

Thermodynamics
Uh.. sorry for posting the same question, i think i already got the answer, in a previous question. Thany you again.
November 18, 2014

Thermodynamics
What are the different types of Diffusers?
November 18, 2014

English
My homework is hard. The question is: COMPARE THE WAYS THE POETS PRESENT STRONG EMOTIONS IN 'MEDUSA' AND ONE OTHER POEM FROM CHARACTER & VOICE. The two poems are Medusa and Les Grand Signeurs. Medusa:Be terrified. It’s you I love, perfect man, Greek God, my own; ...
November 17, 2014

algebra
maybe a diagram cud be of help, because i cant understand the quest.
November 17, 2014

Thermodynamics
oh thank you very much for your help, but what i wud like to know, is, can i include these kind of diffusers in a thermodynamics assignment?
November 17, 2014

Thermodynamics
Hello, Can i know what are the different types of diffusers ? Plz don't tell me to google it, becaus ei already did so, and its not much of great help. Thank you
November 17, 2014

Physics
A 25 kg box is being pulled across a surface. The coefficient of kinetic friction between the box and the surface is 0.55. a) if the box is moving at a constant speed, what is the pulling force? b)If the pulling force is 350 N, what is the NET force acting on the box? c)If the...
November 16, 2014

English
Part (a) – What theme do you think the poet is exploring in this poem? Part (b) – How does the poet use language in this poem to present his ideas? The poem is = FARM CHILD Look at this village boy, his head is stuffed With all the nests he know, his pockets with ...
November 12, 2014

math
Look at the numbers below. 75, 74, 72, 69, 65 A: describe the pattern
November 6, 2014

Calculus
Let f(x) = 2x^{3}+9. Find the open intervals on which f is increasing (decreasing). Then determine the x-coordinates of all relative maxima (minima). 1. f is increasing on the intervals: 2. f is decreasing on the intervals: 3. The relative maxima of f occur at x = 4. The ...
November 4, 2014

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