Tuesday
June 18, 2013

# Posts by PHIL

Total # Posts: 222

math
20% of num is x. the num is 4 more than x . what's the number.

chemistry
How many Ca +2 ions in 40.08g of CaCO3 (Calcium Carbonate) I'm unsure on how to approach this problem and set it up.

accounting
Your rich godfather has offered you a choice of one of the three following alternatives: \$10,000 now; \$2,000 a year for eight years; or \$24,000 at the end of eight years. Assuming you could earn 11 percent annually, which alternative should you choose? If you could earn 12 per...

Physics
Please respond to my previous post.

Physics
Now I'm confused. Why does changing the direction of a force double it? I'm also confused about whether the tension is a reaction to the weight of the tire and the boy or the force that the boy pulls down on the rope with. Also if the force in the free body diagram of ...

Physics
Ok, I think I got it. Are these free body diagrams correct? (ignore the dots) TIRE+BOY: T F |.| .| W FREE END: .T .| .| .F SYSTEM: .F .| .| .T.....(This tension is down) T.F....(This tension is up) |.| .| .W CANCELING TENSIONS: 2F | | W 2F=W so F=(1/2)W

Physics
A boy sits in a tire that is attached to a rope that passes over a pulley fastened to the ceiling and then passes back down to the boy's hands. The weight of the boy plus the tire is W. The force with which the boy must pull on the free end of the rope to support his weigh...

probability
how many ways can the 5people be arranged in a row if the father is on the far right?

Physics
Hi maybe someone can help me out, since my teacher isn't available today and this is due tonight :D. Find the heat that flows in 1.0 s through a lead brick 17 cm long if the temperature difference between the ends of the brick is 9.5 C. The cross-sectional area of the bric...

Physics
I'm not sure how to do the last problem in this pdf: h t t p : / / t i n y u r l . c o m / y 9 q f 4 7 4 Any help would be appreciated. Thank you!

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