Wednesday
May 22, 2013

Posts by Tom

Total # Posts: 895

Calculus
evaluate the limit: lim cos(x + pi/2)/x x->0

Calculus
Find the vector and scalar equations of the plane containing the line r=(3,5,1)+t(-2,3,1) and the point (1,2,3)

Physics
so 0.398/1.26 × 10^–6 m2=3.16x10^-7Pa

Physics
In a classroom demonstration, a 79.2-kg physics professor lies on a “bed of nails.” The bed consists of a large number of evenly spaced, relatively sharp nails mounted in a board so that the points extend vertically outward from the board. While the professor is lyin...

chem
If the density of copper is 8.92 g/ml what is the % error?

math
The exchange rate of U.S. dollars to British pound's is .63 you have \$4000 to convert to British pounds. How many British pounds will you receive?

MATH HELP
A committee of 5 people is to be selected from student council. Council has 6 boys and 7 girls. What is the probability that the committee will have at least 3 boys? *** If you can show work that would be helpful (OPTIONAL)*** THANK YOU VERY MUCH!

MATH
A committee of 5 people is to be selected from student council. Council has 6 boys and 7 girls. What is the probability that the committee will have at least 3 boys? *** If you can show work that would be helpful (OPTIONAL)*** THANK YOU VERY MUCH!

Physics(work and energy)
but if i do that,then does it mean that i only supply 49000J to only overcome the work done agaist friction?

Physics(work and energy)
A cannon ball is fired so that it hits the wall at the top of a 10m tower.If the energy needed to destroy the wall is 49000 F and the mass of the cannon ball is 10 k, the minimum initial velocity of the cannon ball required to break the tower wall is A 100 m/s b 200 m/s c 300 ...

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