Tuesday
May 21, 2013

Posts by mike


Total # Posts: 2946

English - Poetry
Here is a copy of the poem: My children play with skulls for their classrooms are guarded by warlocks who scream at walls collapsing into paper toilets plump witches mouth ancient curses in an untaught tongue test children upon their meaning assign grades in a holocaust rangin...

English - Poetry
What does Audre Lorde's poem School Note mean? Most notably, what does the last stanza, "My children play with skulls/ and remember / for the embattled / there is no place / that cannot be / home / nor is."?

Discrete Math
Let f : R R→Z be the closed binary operation defined by f (a, b) _ _a + b_. (a) Is f commutative? (b) Is f associative? (c) Does f have an identity element?

Math
Is 72.98 = 72.980 my answer is true.. Is it correct?

Chemistry
Assuming equal concentrations, rank these aqueous solutions by their freezing point: low to high NH4Cl, Sn(ClO3)4, Na2SO4, and AlBr3.

chemistry
find the molar solubility of zinc carbonate if its ksp=1.5x10^-10. (at 298K)

math
If the length of a rectangle is 4 more than 3 times the width, and the perimeter is 32 meters, what are its dimensions? Please enter your answer as two numbers without the units, separated by a comma.

statistics
a quiz consists of 30 true or false questions. if the student guesses on each question, what is the standard deviation of the number of correct answers

Physics
A ceiling fan starting from rest reaches an angular velocity of 30 rev/sec in 5 sec. What is the angular displacement of the fan during these 5 sec? Can you show me the steps need to figure this question out? Thanks!

Physics
A drawbridge with a weight of 5000 N is supported by a hinge and rope and is in static equilibrium. The length of the drawbridge is 5 m and the rope is attached to the draw bridge a distance of 4 m from the hinge. What is the tension force rope provides? Can you show me steps ...

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