Monday
May 20, 2013

# Posts by tracy

Total # Posts: 586

Chemistry
The boiling point of an aqueous solution is 102.16 C. What is the freezing point? Dr. Bob, If you happen to answer this question, I was the one that a question earlier about how to know what Kf constant to use [water vs benzene?] and i didn't notice that it was given in th...

Chemistry
At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water. I'm confused on how you pick the Kf value.. Usually...

Physics
A crystal chandelier hangs in a fancy ballroom. Draw a free body diagram for the chandelier, including all vertical forcs affecting it. Please help :)

Physics
A toddler on a tricycle slowly rolls down a steep hill withour pedaling. It takes her six seconds to reach a speed of 8.1 m/s. Find the toddler's acceleration. a=v/t 8.1 m/s / 6 = 1.35 m/s^2 how far has the toddler traveled? d=vot + 1/2 at^2 (8.1)(6) + 1/2 (1.35)(6)^2 48.6...

Physics
Jamaican sprinter Usain Bolt holds the world record for the men's 100 meter dash with a time of 9.58 seconds. Another runner is training to break this record and finds that he can accelerate at a constant rate of 1.07 m/s^2. Assuming that the runner starts from rest, will ...

Physics
A 784 Newton astronaunt travels to Neptune's largest moon, Triton, with a simple bathroom scale. While standing on the surface of the moon, he finds that he now weighs only 62 Newtons. What is g, acceleration due to gravity, on Triton? g=weight/mass Is that 784/62? Sorry ...

Physics
A 784 Newton astronaunt travels to Neptune's largest moon, Triton, with a simple bathroom scale. While standing on the surface of the moon, he finds that he now weighs only 62 Newtons. What is g, acceleration due to gravity, on Triton?

world history
on july 14, 1789 a mob of people stormed a prison that held political prisoners, revolting against the injusticess of the governing party. in which country did this occur? I say France

world history
samurai

world history
Select the Japanese figure of the feudal warrior society whose role was similar to that of the knight in Medieval Europe. I say emperor

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