Wednesday
May 22, 2013

# Posts by steven

Total # Posts: 305

Chemistry
Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

geometry
I need help to graph the circle 4x^2+4y^2+16x-32y+71=0 Graph the circle

Chemistry
Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

Microbiology
Please help me answer this question. Thanks a lots. Some Archaea have ATPases with different H+:ATP ratios. Assumes the delta Gp for ATP synthesis in one such organism is -518 mV. The minumum delta P required to generate ATP with a typical bacterial ATPase is about -173 mV. AT...

Math
Solve each equation. 9n-3=7(n+3)+2n I got -24 is that right?

Algebra II
What is the simplified version of (2x^(-3)y^(2))^(-2) and (z^4)/(2z^3) Thanks!

algebra
what is 28 seconds over 2 minutes written in its simplest form

APUSH
how did huge industrial trusts develop in industries such as steel oil and banking, what was the effect on the economy?

Physics
A total of 8.0 joules of work is done when a constant horizontal force of 2.0 newtons to the left is used to push a 3.0 kilogram box across a counter top. Determine the total horizontal distance the box moves.

ahsa math
hey need help with this asap you are given 12 feet of fencing to build a cage how many different rectangle can you build? WHICH WOULD YIELD THE MAXIMUM AREA

Pages: <<Prev | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Next>>