Friday
November 21, 2014

Posts by helpplease


Total # Posts: 14

English
Would it be worser better like this...analogy one: Walter-walking, bird-weaving. Analog y two: sky-, cry-tear? The one I am really lost on is Sandra/kitten story is the comparison the fear
September 18, 2012

Math
never mind found my other post!
January 12, 2012

Math
I need help on this math problem. The width of a certain painting is 5cm less than twice the length. The length of the diagonal distance across the painting is 107cm. Find the length and width. Round your answer to 2 decimal places. Can you check is my substitute is correct? ...
January 12, 2012

Math 11
the next step is: 5L^2-20L=11424 right?
January 11, 2012

physics
3.8x10^5 and 4.27x10^5
October 15, 2011

physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. The mass is 3.8 105 kg, its speed is 25.9 m/s, and the net braking force is 4.27 105 N.
October 15, 2011

physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. The mass is 3.8 105 kg, its speed is 25.9 m/s, and the net braking force is 4.27 105 N.
October 15, 2011

Physics
If a large housefly 3 m away from you makes a noise of 43 dB, what is the noise level of 1200 flies at that distance, assuming interference has a negligible effect? Noise level of 1200 flies = ??dB HELP: Using the formula for decibels and the given information, you can ...
December 5, 2010

Physics
An iron block of the mass 1 kg is suspended on a spring of the spring constant 140 N/m, and merged into a vessel with 8 liters of water. The mass is displaced by 10 cm from its equilibrium position, and released. How much energy in J has been dissipated by the time the mass ...
December 3, 2010

chemistry
When an electron moves from the n=2 to n=4 state, Does it gain or lose energy? In a more to n=4, is a photon emitted or absorbed?
October 25, 2010

Ap Chemistry
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010

12th grade
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010

calcus
Sketch the regions enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle and label its height and width. integrate with either respect to x or y, then find area S of the region given that y=sqrt(x), y=x/2, and ...
October 21, 2010

Math
Hey, I'm working on the same thing and I'm really confused, How did you go about doing 1.a)?
November 10, 2009

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