# physics

140

1. 👍 0
2. 👎 0
3. 👁 80

## Similar Questions

1. ### nuclear physics

A researcher wishes to extract 140 La from 140 Ba. She obtains a 1000 MBq virgin Ba-140 sample and must wait until the maximum activity of La-140 is available. a) Write down the decay relationship (include half-lives), and include

asked by amy on February 3, 2011
2. ### PRE - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20 ...... I NEED HELP WITH THE OTHER TWO PLEASE :) 4 -1 3 | 12 1 4

asked by Ciara on April 17, 2015
3. ### algebra

y varies directly with x If x=52 when y=130, find x when y=140 i got 61 x/52 = 140/130 x= 52(140/130) Put 52(140/130) in the google search window.

asked by tabby on December 14, 2006
4. ### Physics Cont'd - Quidditch

For time t = d/v 140/20 t= 7 0 = 1/2(-10)(7^2)+(15)(7)+h -h = -140 h = 140 We were asked to use 10m/s^2 for acceleration. That's what I got.

asked by Anonymous on March 16, 2008
5. ### Math

Is it possible to do this 432(140-x)^3 = 60480-432x^3 or do i have to expand it like this 432(140-x)(140-x)(140-x)

asked by dunstan on June 22, 2010
1. ### Plutonium decay

The amount A(gms) of radioactive plutonium remaining in a 20gm sample after t days is given by: A = 20 * (1/2)^t/140 At what rate is the plutonium decaying when t = 2 days. I think you need to find dA/dt and evaluate it at t=2

asked by Jen on October 20, 2006
2. ### Math

How would I solve this Equation? DB = 10log(I/Io) DB = 10log (140 Io/Io) DB = 10 log (140) DB = ????? This is as far I have gotten on this equation. Can someone please help me finish? I am trying to determine how many times louder

asked by Marcy on December 10, 2008
3. ### Math

The french club is sponsoring a bake sale. IF its goal is to raise at least \$140m how many pastries mut it sell at \$3.50 each to meet that goal? Write and solve an inequality 3.50p ≥ 140: p ≥ 490 140p ≥3.50; p≥ 40*****

asked by Took on October 26, 2015
4. ### algebra 1

the french club is sponsering a bake sale. they spent \$77 in supplies. if their goal is to raise at least \$140 how many pastries must they sell at \$3.50 each in order to meet the goal. write and solve an inequality. a. 140p-77≥

asked by hips on April 25, 2013
5. ### Algebra 2 Honors

I have a question on my math homework. The problem is: Suppose r varies jointly as s and t. If s = 20 when r = 140 and t = -5, find s when r = 7 and t = 2.5. I used r = kst. I plug in and get 140 = k(20)(5). I then multiply and

asked by Ronald on May 19, 2015