Friday
May 6, 2016

Posts by Wilson

Total # Posts: 50

Chemistry
What volume of concentrated hydrochloric acid (12.0 M HCl) is required to make 2.0 liters of a 3.0 M HCl solution?
March 25, 2016

physics
A bob of a pendulum 100cm long swings through 20cm,find theta in radian and degree
February 13, 2016

maths
A boy 1.2m tall stands 6m away from the foot of a vertical land pole 4.2m long. If the land is at the top of the pole,(a)represent this information in a diagram (b)calculate the (I)length of the shadow of the boy cast by the land (ii)angle of elevation of the land from the boy...
January 10, 2016

Chemistry
Oganic solvents are not suited to be heated with one of the followings: Oil Bath Electric hot plate Water bath Bunsen burner flame 2 Which of the following is not an inflammable liquid ? Water Ethanol Kerosine Benzene 3 These are some safety precausions necessary in a ...
October 23, 2015

physics
a stone is thrown horizontally with an initial velocity of 15m/s from a tower 20 meters high. How long does the stone take to reach the ground?
July 14, 2015

Chemistry
how many moles of glucose can be burned "biologically" when 10.0 mol of oxygen is available? C6 H12 O6 + 6CO2 -> 6CO2 +6H2O
January 23, 2015

math
What is the value of the variable cost ? If the break even point is \$ 130, the fixed cost is \$ 330, selling price per unit is \$ 25. (3 marks)
June 22, 2014

grammar
I please I need identify each sentece is a complex,exlamation,declarative or interrogative. Oh no! do you wantto play in the garden. in the story,the author told how useful a led can be. she play the piano. I love you. my brother baked a cake last night. the car broke down,but...
June 21, 2014

grammar
Tim likes soup,so Mary bought tomatoes
June 21, 2014

triganamatry
how do you find the exact value of sin^-1(-square root of 3 divided by 2)
February 24, 2014

physics
A horizontal spring has a spring constant k = 23.2 N/m. A 0.165 kg mass is attached to the spring and is free to slide on a frictionless surface. The mass is pulled 26.2 cm from the equilibrium point. What is the speed (m/s) of the mass as it passes the equilibrium point?
February 2, 2014

Math (logs)
In x = -3 find x. I worked it out like this e^inx= e^-3 then I got x = 1/e^3. Is that correct?
December 8, 2013

Math
1. 5(x^2 +2x-6) - 3(2+x-x^2) 2. 2x^4-5x(x^3 -y) + 2y(5x) 3.Factor 2x^5+6x4+4x^3+12x^2 4. Factor 9y^2-18y +8 Please help. Thank you!!
October 4, 2013

physics
a machine weighing 1500N is supported bt two chains attached to some point on the machine.one of these ropes goes to the eye bolt in the well & is inclined 30 degrees to the horizontal & the other goes to the hook in ceiling & is inclined at 45 degrees to the horizontal. find ...
March 23, 2013

Physics
A 0.9 kg block is moving with speed 7 m/s towards a spring that has a spring constant of 1.3 N/m. The block hits the spring and compresses it. a) How far did the block compress the spring?(draw a pie graph also) b) When the block is still moving and the spring has been ...
March 19, 2013

Physics
A 3.4 kg mass is shot by a sling shot with an initial velocity of 4.5 m/s. When the mass is in the air at a height of 50m, it is still traveling upwards. What is its velocity at that height? Draw energy pie graphs for the initial and final state. (Hint: You will have to use ...
March 19, 2013

Physics
A 4 kg weight falls on a spring that is facing up. The weight compresses the spring 0.25m. If the spring constant of the spring is 3.5N/m, how high was the weight when it was dropped?
March 19, 2013

Physics
A pendulum is released from some height. When it reaches the bottom of its swing, its speed is 2.5 m/s. What is the initial height of the pendulum?
March 19, 2013

Physics
A pendulum is released from some height. When it reaches the bottom of its swing, its speed is 2.5 m/s. What is the initial height of the pendulum?
March 19, 2013

Pre-calculus
Find the correct end behavior for a given polynomial function. 3.36x^4+8x^2+x-9
January 13, 2013

Accounting
A \$15 credit to Sales was posted as a \$150 credit. By what amount is Sales in error? my answer is \$135 overstated
September 21, 2012

Math
I am in need for help on laws of exponents. 1) 4/x^-3== I do not understand... 2)x^4/y^-3 = Early thanks.
September 20, 2012

math
The first three terms of a geometric sequence are as follows. 64, 32, 16 Find the next two terms of this sequence.
May 4, 2012

math
12, reason being the equation is 1320=x!(x-3)!
April 25, 2012

Math
Can anyone solve this rational inequality y-3/5 < y+2/10
December 7, 2011

Physics
A hammer slides down a roof that makes a 40.0 degree angle with the horizontal. What are the magnitudes of the components of the hammer's velocity at the edge of the roof if it is moving at a speed of 4.25m/s?
November 17, 2011

physics
Assuming they travel in one-dimension we can use the x(t)= vt+1/2 at^2. The slower boy will travel a distance X and the faster boy will travel a distance 100-X because X will be the meeting point. And there is no acceleration involved, so the equation will look like x=5t and ...
September 2, 2011

Physics 2
A pair of charges exert attractive forces of magnitude 2.4*10^-2 N on each other when they are separated by 2.0 m. The total charge of the pair is +3.0 Micro Coulomb. What is the charge on the object with positive/negative charge?
September 1, 2011

science
so would i divid the molar mass of c12 h22 o11?
December 7, 2010

science
convert 270g to moles
December 7, 2010

A duck is 17 feet below the surface of a lake. The duck begins to head to the surface at a rate of 3 feet per second. Write an expression to describe the duck's position after s seconds?
November 30, 2010

Thanks Ms. Sue have anything else she said thats not it cause thats what I gave her. Any other answers and I dnt believe bay leaf was in that answer
November 7, 2010

Ok people my daughter myself and my husband have been unable to answer this question so your help would be appreciated. I asked hours ago but no one answered please help. What is the chemical aroma name for: basil, nutmeg and bayleaf thank you fo your help. HURRY!
November 7, 2010

chemistry
What are the chemical aroma names for basil, nutmeg and bayleves
November 7, 2010

math
Factor: 20+22v-12v^2
August 31, 2010

MAT116
Graph the line containing the given pair of points and find the slope. (5,2),(-4,-5)
August 20, 2010

chemistry
what is the percentage of water in Ba(OH)2 x 8H2O?
July 8, 2010

Physics
The angle of reflection is going to be 30
January 4, 2010

I don't understand how living things grow and develop. Can you help me? I have to do a project with pictures but I need to understand what I'm looking for.
October 19, 2009

chemistry
When 0.712 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 116C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not...
May 18, 2009

Math
Estimate the velocity of the groundwater flowing from a point 1000 feet from a creek. The point is 30 feet above the surface of the creek and the permeability of the subsurface is approximately 10-5. Approximately how long would it take the groundwater to reach the creek?
March 23, 2009

Environmental Science
Thank you.
March 23, 2009

Environmental Science
1. Estimate the velocity of the groundwater flowing from a point 1000 feet from a creek. The point is 30 feet above the surface of the creek and the permeability of the subsurface is approximately 10-5. Approximately how long would it take the groundwater to reach the creek? 2...
March 23, 2009

Math: Fractions
A group charters 3 identical buses and occupies 4/5 of the seats. After 1/4 of the passengers leae, the remaining passangers use only 2 of the busses what fraction of the seats on the two buses are now occupied? assume number of seats on all buses is 3x and in one bus x. how ...
October 17, 2008

physics
THANKS!!!!!!!!!!!!!!!!!
September 29, 2007

physics
I need help coming up a source of error for this like lab thing that we are doing class. So like we took this string with a rubber ball on it and the string went through a glass tube, and on the end of the string, so the like opposite end of where the ball (rubber stopper) is...
September 29, 2007

final project
what is a pearl? http://en.wikipedia.org/wiki/Pearl
May 7, 2007

math
how? 3x-(4+2x)= what do you want to do? Remove the parenthses. 3x-4+2x combine terms 5x-4.
March 18, 2007

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