Monday
February 8, 2016

Posts by Daniel

Total # Posts: 983

maths
a bicycle wheel has a diameter of 42 cm.how many revolutions will it make to cover a distance of 13.2km
February 6, 2016

math
A man seated on a chair has a mass of 85 kg. Known that the mans weight is distributed so the chairs back legs support twice as much as the front legs. What is the mass taken by each leg?
February 6, 2016

physics the Rang
U2 Sin 2a =g =34.66m
January 29, 2016

physics projectile
The speed of projection is 40m/s upward.The negative value gives the speed at which the dody again arrives at the level of projection
January 29, 2016

Calculus plz help!!!
Integrate:Root(1+root(x))/x
January 15, 2016

Algebra help help!!!
Algebra 4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1)....... Plz help me
January 12, 2016

Reposting chemistry help!!!
A metal x forms two different chloride.if 12.g of chloride A and 16.3g of chloride B contain 7.1g and 10.7g of chlorine respectively,show that the figure agree with the laws of multiple proportions.write there formulea plz i need the working.....
January 12, 2016

Calculus help!!!
X^2y+sinxy=e^xy i need solution plz
January 12, 2016

Chemistry chlorine plz help
A metal x forms two different chloride.if 12.g of chloride A and 16.3g of chloride B contain 7.1g and 10.7g of chlorine respectively,show that the figure agree with the laws of multiple proportions.write there formulea plz i need the work....no hint plz
January 12, 2016

MATHS
Line AB has the equation y= ¼x + 6 write down the gradient of a line that is Parallel to line AB and perpendicular to line AB (2×1=2)
January 10, 2016

Math
Solve the system using elimination. 10y − 2x = 50 6x − 3y = 12 A. (5, 6) B. (2.1, 0.2) C. (2.1, 4.6) D. (6, 5)
January 5, 2016

french(le passe compose)
i went home last week He helped me with my homework I visited him yesterday
January 5, 2016

math
What is the are of 18ft 18ft 4ft 3ft 3ft
January 4, 2016

Physics
Hmmm
December 30, 2015

Physics college
A particle is thrown from the origin of the frame xOy at the moment t = 0, with speed v0 at a certain angle b from the Ox axis. At the same moment another particle begins to fall freely from a wall with height h, situated at the distance d. Air resistance is neglected. Find ...
December 27, 2015

Physics help
Find the differential equation of motion for a gravitational pendulum of mass m and length a by using the fact that the torque of its weight relative to the point of suspension is equal to the time derivative its angular momentum. Solve this equation to obtain the equation of ...
December 27, 2015

physics
a spring of force constant 1500N/m is acted upon Hy a constant force of 75N .calculate the potential energy stored in the spring
December 21, 2015

MEKELLE
Arrange increasing rates of diffusion H2 CO CO2 N2 He O2 SO2
December 20, 2015

Math
5+3+2+4+40·1-1/8
December 16, 2015

Calulus
Fundamental Theorem of Calculus 1. (4e^x-3)dx plus the number in x (6,1)
December 11, 2015

Calulus
Consider the function y = 2x^3-3x^2+9x+5. 1. Find where the function is increasing, where the function is decreasing, and calculate all relative extrema (local max and local min) 2. Find where the function is concave up, where the function is concave down, and find the ...
December 11, 2015

Calulus
You have 300 square feet of wood you will use to construct a rectangular shed with a square base and top. What is the maximum volume of your shed? Optimization Question
December 11, 2015

Calculus
As an ice cube melts its surface area in decreasing at a rate of 6 cm^2 / sec. Find the rate at which the length of each side is decreasing at the moment when each side has length 2 cm.
December 11, 2015

Physics
A natural gas power plant burns natural gas to produce electricity. In one second it produces 500 MJ of electrical potential energy. The power plant consumes chemical energy in order to produce electrical potential energy. --In one second does it consume 500 MJ of chemical ...
December 9, 2015

Physics
A person slides down a slope. At the end of their slide they are brought gently to rest by a large spring. Friction on the slope cannot be ignored. Draw an energy bar chart for this situation. Define your system any way you want, but clearly state how you have defined your ...
December 9, 2015

Math
A river flows at the speed of v from west to east. How should a man who is at a point A of the southern bank of the river, which is d meters away from the river, and wants to reach a point B on the northern bank of the river, which is 2d meters away from the river, choose his ...
December 7, 2015

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
wwas this right
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 :)
Was this right @basketball&batman
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

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

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

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

Langague Arts 8th Grade
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

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. Next>>