Wednesday
June 19, 2013

Posts by Yuki


Total # Posts: 30

vocab
Industry antonym??

Math
Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

Math
Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

Chemistry
In acidic solution, VO_2^+1 is reduced to VO^2+, whereas Mn^2+ is oxidized to MnO_4^-1 . Given the partial equation VO_2^+1? +Mn^2+? ---> VO^2+ ? + MnO_4^-1? What must the coefficients be so that the electrons are balanced?

Physics
A turbine is spinning at 3600 rpm. Friction in the bearings is so low that it takes 15 min to coast to a stop. How many revolutions does the turbine make while stopping? Please show steps. Thank you!

Physics
A gray kangaroo can bound across level ground with each jump carrying it 8.4m from the takeoff point. Typically the kangaroo leaves the ground at a 23 angle. 1. Provide knowns and unknown values. 2. What is the initial velocity or takeoff speed? 3. What is its maximum height a...

Chem
What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3, weighs 150 mg?

Physics
A freight car with a mass of 29,000 kg rolls down an inclined track through a vertical distance of 2.8 m. At the bottom of the incline, on a level track, the car collides and couples with an identical freight car that was at rest. What percentage of the initial kinetic energy ...

Algebra
1) 4/vy^2 + 9/vy^2 2) 13/vy^2 3) That's it.

math
You can use the pythagorean theorem for this. a^2 + b^2 = c^2 1) 6^2 + 3^2 = ? 2) 36 + 9 = 45 <=square rooting this... 3) √45 => 3√5 cm of the hypotenuse 4) 6 + 3 + 3√5 = 9 + 3√5

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