Sarah

The first part of the equation is (NO3)^- + FeSO4 + H2SO4=??

Is there some way to figure out what this equals using a redox reaction?

Also, part of the net ionic equation is (NO3)^- + 3Fe (2+) + 4H(+) = Fe (2+) + NO=

Can anyone explain to me how to get what this equals?

Thanks!

What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to 5 R(Earth) before coming to rest momentarily?

If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/4 of the escape speed?

What is the highest tree the ball could clear on its way to the longest possible hole-in-one?

Find a second degree polynomial P = ax^2 + bx + c such that P(2) = 5, P'(2) = 3, and

P''(2) = 2.

Answer: x^2 -x + 3.

How do I get this answer?

Ok, so if I have my code with several classes all written, how would I go about creating a GUI for the gameboard I have created? I was wondering if it was simple to do or if it took a lot of manipulating of the function? I believe tkinter? is the built-in GUI in Python, which would be what I probably would want to use. Also, how do you change the features (i.e. color, style)?

lim (x to infinity) (x+a/x-a)^x=e

The answer is 1/2, but does anyone know how to get this?

A rectangular pool is filling with water at a rate of 2 ft^3/s. The pool's dimensions are 8

ft by 20 ft and 6 ft deep. If the pool was initially empty, a) how long will it take for the pool to be 3/4

full? b) Over a period of 24 hours, after the pool has been filled up, the water level evaporates at a rate of 1/2(sin(2pi+2pi)/12)+1 ft^3/h. If at midnight t = 0 and t is in hours, at what time of the day is the water level decreasing at the slowest rate? c) How fast is the water evaporating at that time?

Answer: a) 6 mins. b) 4:00pm c) 0 ft^3/h

Can someone explain how to do this problem?

Ok, so I know I can just graph this equation on my calculator, but is there a way to logically figure out what it will look like?

abs(x+y)+abs(x)-abs(y)<=2

abs(2x-1)-abs(x+5)=3

How do I get to the answer of x=-7/2 and x=9 ?

Find the inverse of:

f(x)=e^(2x)/(sqrt(1+e^(4x)))

How do I get to the answer of f'(x)=(1/4)ln(x^2/1-x^2) ?

(sqrt(2*pi))/24 <= integral (cosx)dx from pi/6 to pi/4 <= (sqrt(3*pi))/24

f''(x)=lim (h goes to 0) (f(x+h)-2f(x)+f(x-h))/h^2

with vertices: (0,0),(3,1),(1,2)

Answer=5/2 Show work!

a. let C(t)=(1/t)*integral [f(s)+g(s)]ds from 0 to t

Show that the critical numbers of C occur at the numbers t where C(t)=f(t)+g(t)

b. Suppose that f(t)= (v/15)-(v/450)t if 0<t<=30

0 if t>30

and g(t)=(vt^2)/12,900 t>0

Determine the length of time T for the total depreciation D(t)=integral (f(s)ds) from 0 to t to equal the initial value v.

c. Determine the abs min of C on (0,T]

integral (xf(sinx)dx) from 0 to pi = (pi/2)*integral (f(sinx)dx) from 0 to pi

y = (f(x))3 at the point (0,-1/8 ), where f is di erentiable everywhere, f(0) =-1/2 , and f'(0) = 8 /3

I know that the answer is y=2x-1/8 but I don't know the steps to get there

If the units for x are feet and the units for a(x) are pounds per foot, what are the units for da/dx? What units does integral (a(x))dx from 2 to 8 have?

f(x)=3 for x < 3

x for x>=3

integral (f(cosx)dx) from 0 to pi/2 = integral (f(sinx)dx) from 0 to pi/2

use part a to evaluate:

integral (cos^2x)dx from 0 to pi/2 ans integral (sin^2x)dx from 0 to pi/2

Here is my code:

http://pastebin.com/CYVbLP2S

Does anyone know/can figure out what is wrong with it? I've tried everything!