Tuesday
September 2, 2014

Posts by Allan


Total # Posts: 53

Chemistry
Can anyone name the following alcohol H3C-CH2-CH2-CH2-OH
June 2, 2014

Physics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
October 18, 2013

Algebra
A fireman leans a 40-ft long ladder up against a building. The base of the ladder creates an angle of elevation of 32 degrees with the ground. How far is the base of the ladder from the base of the building? Round to the nearest whole foot, if necessary.
May 19, 2013

Chemistry
An equilibrium that would favour the products is A. NH4+(aq) + H2PO4-(aq)= NH3(aq) + H3PO4(aq) B. HCN(aq) + HS-(aq)= CN-(aq) + H2S(aq) C. HCO3-(aq) +,HBO3 2-(aq)= H2BO3-(aq) + CO3 2-(aq) D. HSO4-(aq) + HSO3-(aq)= H2SO3(aq) + SO4 2- (aq) The answer is C. But I don't ...
January 29, 2013

Chemistry
An equilibrium that would favour the products is A. NH4+(aq) + H2PO4-(aq)= NH3(aq) + H3PO4(aq) B. HCN(aq) + HS-(aq)= CN-(aq) + H2S(aq) C. HCO3-(aq) +,HBO3 2-(aq)= H2BO3-(aq) + CO3 2-(aq) D. HSO4-(aq) + HSO3-(aq)= H2SO3(aq) + SO4 2- (aq) The answer is C. But I don't ...
January 29, 2013

Chemistry
In the chlor-alkali process, the mass of NaCl(s) required to produce 0.793 kg of chlorine gas is _____ kg.
January 28, 2013

Science
In the chlor-alkali process, the mass of NaCl(s) required to produce 0.793 kg of chlorine gas is _____ kg.
January 28, 2013

Pre-Calc
Two lookout towers on Mount Abraham and Snow Mountain are 29 miles apart. A fire warden in each tower sees a forest fire. From Mount Abraham the angle formed with the line of sight to the fire and the line of sight to the other tower is 44 degrees. From Snow Mountain the fire ...
December 11, 2012

capacitors
how would you carry out a suitable test to determine the relationship between voltage and current when charging and discharging a capacitor
December 2, 2012

math
caleb and winona both travel by car to their friend's home. The distance winona traveled was 124 miles less than twice the distance caleb traveled. If winona traveled 628 miles, how far did caled travel?
April 30, 2012

physics
A wire of radius one meter is centered on the origin in the xy plane. This wire carries a total charge of +Q. Another wire of length two meters runs along the z-axis and is centered at the origin. It carries total charge -Q. What is the electric field vector at any point on ...
April 20, 2012

physics
A source of instantaneous potential V = 10sin(50pi t) is connected across a capacitor of capacitence 1 times 10power negative 6 F. calculate the maximum value of the current and phase difference between the current and the potential difference?
April 18, 2012

Proofs Geometry
What is the statement and the reason for Given: and mEGF∠=60 mAGF∠=°90; Prove: mAGB∠=°30. Thank you!
November 13, 2011

Chemistry
Hi Everyone, Please Give me two examples of organic compound that have two different functional side groups groups. Please list the functional side groups for each organic compound.
November 10, 2011

Math Linear Algebra
Find the inverses of the matrices. Let A = 1 2 5 12 b1 = -1 3 b2 = 1 -5 b3 = 2 6 b4 = 3 5 Find A^-1, and use it to solve the four equations. Ax = b1, Ax = b2, Ax = b3, Ax = b4
October 5, 2011

Linear Algebra
Find the inverse of the matrices if they exist. Use the algorithm introduced in this section. 1 2 -1 -4 -7 3 -2 -6 4
October 5, 2011

Linear Algebra
Find the inverse of the matrices, if they exist. Use the algorithm introduced in this section. 1 2 -1 -4 -7 3 -2 -6 4
October 2, 2011

Chemistry
What must be the molarity of an aqueous solution of trimethylamine, (CH3)3 N, if it has a PH=11.20?
October 2, 2011

IT
Can anyone tell me which WIMAX system you would use for last mile broadband ? with a link to a town the miles away ??? Mobile or fixed ??? Thnks
June 28, 2011

science
asprin (C9 H8 O4) is produced by the rection between salicylic acid (C7 H6 O3) and acetic anhydride(C4 H6 O3). Calculate the maximum mass of aspirin that can be obtained if you mix 50g of each of the reactants. The chem.equation for the reaction is as f.f C7 H6 O3(s) + C4 H6 ...
May 9, 2011

10th Grade Chemistry
SiH4
February 17, 2011

Electr. and Magnetism
1) A charge of 80nC is uniformly distributed along the x-axis from x= 0 to x= 2.0m. Determine the magnitude of the electric field at a point on the x-axis with x=8.0m. a] 30 N/C b] 15 N/C c] 48 N/C d] 90 N/C e] 60 N/C 2) 3 point charges, 2 positive and one negative, each ...
January 31, 2011

math
vijay has 1/20 of a dollar in his pocket. what coins might he have?
January 18, 2011

calculus
a particle moves along the x-axis in such a way that its acceleration at any time t is given by a(t)= 6t - 18. At time t = 0, the velocity v(t) = 24. and at time t = 1, the position x(t) = 20 i have to find the expression for the velocity and what values t is at rest
December 9, 2010

english
where is the adjectives and the adverbs in the following paragraphe at the time lorraine hansberry was the yongest american playwriter ,the first woman ,and the first african american to receive the honor . her much celebrated play was A Raisin in the Sun.
October 31, 2010

physics
B=μ0I/2πr B1 = (4π×10^7)(8.0A)/(2π×0.030m) B2 = (4π×10^7)(-8.0A)/(2π×0.150m) BA = B1 + B2 B1 = (4π×10^7)(8.0A)/(2π×0.060m) B2 = (4π×10^7)(-8.0A)/(2π×-0.060m) BB = B1 + B2
September 21, 2010

french
microwave in french
June 14, 2010

college
The diameter of a wire should be 8 cm. It follows a normal distribution and has a standard deviation of 0.01 cm. A person tests each delivery by taking 5 samples, accepting the goods only if the mean is at most 8.01 a) Find the probability of type 1 error? b) A hypothesis test...
March 14, 2010

science
what does monitoring information indicate about trends in amount of atmospheric carbon dioxide?
February 28, 2010

science
what does monitoring information indicate about trends in amount of atmosphere carbon dioxide?
February 26, 2010

math
thnk so mch
January 26, 2010

math
The sum of 2 numbers is 26. Four times the first number plus twice the second is 70. What are the numbers?
January 26, 2010

math
an aircraft flew at 400km/h to its destination and returned at 500km/h. If the total trip took 9h, how far did it fly? The answer is 2000km but how
January 26, 2010

algebra
3square root of 9 - square root of 4
January 26, 2010

algebra
3ã9-4
January 26, 2010

math
One number is 5 more than another number. Four times the larger number plus 3 times the smaller is 97. find the numbers. Show your work.
January 20, 2010

math
the sum of two numbers is 51. Twice the first plus 4 times the second is 128. What are the numbers? Show your work.
January 19, 2010

math
2/6
January 19, 2010

1st grade
36
January 19, 2010

economics
The Midnight Hours, a local nightclub earned 100,000 in accounting profits last year, this year the owner, who had invested 1,000,000 in the club, decide to close the club. What can you say about the economic profit (and the rate of return) in the night-club business?
December 7, 2009

economics
Investors have set the following expectations for profitability and earnings: ROI first year must be at least 17% Turnover in the first year is budgeted at DKK 3,400,000, oo excl. VAT and the total investment Amounts to DKK 4.000.000, oo excl. VAT. 1.1 How much profit should ...
December 6, 2009

algebra
how many times greater is 2.6 x 10^7 than 1.3 x 10^5
October 15, 2009

algebra
solve for b when a=55 a=radical sign on 25b
October 11, 2009

algebra
(-s^2t)^5(t^3)
October 11, 2009

algebra
how to simplify this question (-m^2n^3)^3
October 11, 2009

math
i think its 37.50
October 11, 2009

Algebra
I am not given an x value, it is an equation, that has to be simplified and this is the result.
June 15, 2009

Algebra
What is the absolute value of (-x - 6)?
June 15, 2009

Algebra
g(- 1) = 10 - (-1)/2 + - 1 = 19/2 nineteen over two b. all reals c. 21 + t I think this is correct, I am rusty.
June 15, 2009

algebra
The x CANNOT be zero because the denominator cannot be zero or it will be undefined. You solve for the denomn by 19x = 0 and you get x = 0 so
June 14, 2009

trig
Since the angle in in QIII, use the cos=- 1/2 and sin= -sqrt3/2 and the inverse tan function on your calculator since tan is the y/x and is equal to -sqrt3. angle is 60
June 10, 2009

chemistry
The freezing point of a solution is A. higher than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstruction by solute particles. B. lower than the freezing point of the solvent alone ...
April 2, 2008

Math
you are gay
October 18, 2007

Pages: 1

Search
Members