March 24, 2017

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Posts by KnowsNothing

Total # Posts: 10

Chemistry 12
The complete combustion of 1.00mL of octane increases the temperature of 250.00g of water by 22.7 degrees Celsius. The density of octane is 0.70g/mL. What is the efficiency of the octane in heating the water? I attempted this question and I have -400 something percent ...
February 4, 2013

Math (Adv. Functions)
Given that triangle ABC with sides a, b, and c, show that the area of the triangle is given by A = ((a^2)(sinB)(sinC))/((2sin(B+C)))
December 12, 2012

Is lead non-polar covalent, polar covalent, ionic, network, or metallic and why?
November 30, 2012

calculus (vectors)
Determine a vector that is orthogonal to the vector e = [3, -1, 4]
October 20, 2012

A molecule has a glycerol backbone. The branches off of the three carbons are as follows: o-co-(ch2)14 - ch3 o-co-(ch2)12 - ch3 o-co-(ch2)16 - ch3 What is this compound called?
October 13, 2012

When a polynomial is divided by (x+2), the remainder is -19. When the same polynomial is divided by (x-1), the remainder is 2. Determine the remainder when the polynomial is divided by (x-1)(x+2).
October 12, 2012

In a Milliken type experiment, two horizontal parallel plates are 1.0 cm apart. A sphere of mass 2.2 x 10^(-13) kg remains stationary when the potential difference between the plates is 350V with the upper plate is negative. How much excess or deficit of electrons does the ...
July 23, 2012

What is the difference between electric force, electric potential energy, electric field strength, electric potential, and electric potential difference?
July 20, 2012

July 17, 2012

A bullet with the mass of 45 g is fired into an 8.3 kg block of wood resting on a floor against a spring. This ideal spring (k = 76 N/m) has a maximum compression of 28 cm. What was the initial speed of the bullet?
July 17, 2012

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