PhoenixFire
 Name:

 School:
 About:
188 helpers are online right now
75% of questions are answered within 5 minutes.
Most Active Subjects

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 1

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 0

 Questions Asked
 15
 Questions Answered
 3
 Medals Received
 4

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 1
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 1
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 1

 Questions Asked
 24
 Questions Answered
 155
 Medals Received
 90

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 1

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 1

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 0

 Questions Asked
 15
 Questions Answered
 3
 Medals Received
 4

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 1
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 1
 Medals Received
 0

 Questions Asked
 0
 Questions Answered
 3
 Medals Received
 1

 Questions Asked
 24
 Questions Answered
 155
 Medals Received
 90

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 1
 Questions Answered
 0
 Medals Received
 1
Questions Answered

PhoenixFire:
A free electron in an oscillating field experiences a force \(\mathbf{F}=e\mathbf {E}(t)\), where \(\mathbf {E}(t)=\mathbf {E_0}sin(wt)\) a…
 updated 10 days ago
 5 replies
 2 Medals
Mathematics

PhoenixFire:
\[F(x)=\int _{ 1 }^{ ln(x^{ 2 }+e) }{ sin(e^{ t }) } dt\]
Find F'(x).
Not sure how to do this, I understand from the Fundamental Theorem o…
 updated 5 months ago
 4 replies
 1 Medal
Mathematics

PhoenixFire:
If everyone on the earth lined up around the equator and started running east at 2.5 m/s (EDIT: velocity is relative to surface of the Eart…
 updated 5 months ago
 52 replies
 3 Medals
Mathematics

PhoenixFire:
\[\int_{e^1}^{e} {\frac{1}{t(1+\left  ln(t) \right )} dt}\]
Can anyone guide me on starting this integral? I've tried numerous times but…
 updated 6 months ago
 10 replies
 No Medals Yet
Mathematics

PhoenixFire:
An inductor is connected to an AC power supply with maximum output voltage \(V\) at frequency \(f\).
What inductance is required to keep th…
 updated 7 months ago
 6 replies
 1 Medal
Mathematics

PhoenixFire:
Simple algebra that I apparently cannot do... Can anyone help here? Simplify the following:
\[{x\frac{1}{x}}={y\frac{1}{y}}\]
…
 updated 7 months ago
 10 replies
 1 Medal
Mathematics

PhoenixFire:
A uniform rod of length 'L' sits at rest vertically. The base of the rod is connected to a frictionless pivot.
It then falls over under th…
 updated 8 months ago
 1 reply
 No Medals Yet
Mathematics

gingy_fizzy:
A newly discovered solar system is found 300 billion kilometers from the sun. How many AU does this represent? Show your work.
PLEASE HELP!
 updated 8 months ago
 5 replies
 1 Medal
Mathematics

PhoenixFire:
Net force between three long wires (undefined length) must equal zero.
Wire 1: Current going Up \(I_1\)
Wire 2: Current going Down \(I_2\)…
 updated 8 months ago
 31 replies
 2 Medals
Mathematics

PhoenixFire:
Funtion Definitions
*Need editor hold on*
 updated 8 months ago
 7 replies
 2 Medals
Mathematics

Avon:
the width of a rectangle is fixed at 4cm. Determine (in terms of an inequality) those lengths for which the area will be less than 100 cm2
 updated 9 months ago
 6 replies
 3 Medals
Mathematics

PhoenixFire:
Confused here...
\[F=mg=m \frac{GM}{r^2}\]
We know 'g' is an acceleration which is \(ms^{2}\)…
 updated 9 months ago
 4 replies
 2 Medals
Mathematics

asmagul:
What would a drummer do to make the sound of a drum give a note of lower pitch?
a]hit the drum skin with a larger force.....
b]hit the dru…
 updated 9 months ago
 1 reply
 2 Medals
Mathematics

PhoenixFire:
Evaluate the surface integral:
\[\iint _{ S }^{ }{ z } dS\]
Where S is the surface \(x=y+3z^2\) for \(0\le y\le 1\) and \(0\le z\le 1\)
 updated 10 months ago
 5 replies
 2 Medals
Mathematics

onegirl:
Find the derivative f’(x)
 updated 11 months ago
 8 replies
 1 Medal
Mathematics

PhoenixFire:
Double Integrals
Find the volume of the solid \(z=(x^2 + y^2)1\) between the two plates z=0 and z=1
…
 updated 11 months ago
 43 replies
 No Medals Yet
Mathematics

PhoenixFire:
Two point Charges each with a charge of +10nC sit at (0,0,0) and (1,2,1). Find the Electric Field E at point (4,4,4).
Give me a second to…
 updated 11 months ago
 3 replies
 No Medals Yet
Mathematics

PhoenixFire:
How do I use Gauss' Law to show that the electric field of any point inside (r<R ) the hollow sphere is 0?
 updated 11 months ago
 2 replies
 1 Medal
Mathematics

suparfly:
How do you get R= S/0.75 from S= R0.25R
(inverse function)
 updated one year ago
 4 replies
 1 Medal
Mathematics

charliem07:
PRECAL;
use the given pair of functions to find and simplify expressions for the following functions and state the domain of each using in…
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

mckayela123:
Calculate the slant height for the given cone. Round to the nearest tenth.
(1 point)
…
 updated one year ago
 5 replies
 1 Medal
Mathematics

jeremyspro:
Help solving this please!
 updated one year ago
 11 replies
 1 Medal
Mathematics

clhenry:
Find the value of $10000 at the end of one year if it is invested in an account that has an interest rate of 4.95% and is compounded in acc…
 updated one year ago
 25 replies
 No Medals Yet
Mathematics

clhenry:
Use the formula for computing future value using compound interest to determine the value of an account at the end of 5 years if a principal…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

hacbkjhbdsijbc:
Can someone please help me.??
 updated one year ago
 41 replies
 3 Medals
Mathematics

RealityWillSlapYou:
I will give a medal!
Write the equation of the line in slopeintercept form that passes through the point (3, 2) and has a slope of 2.
…
 updated one year ago
 28 replies
 1 Medal
Mathematics

RealityWillSlapYou:
Please help me, I'm really bad at this stuff! I will give you a medal!
 updated one year ago
 9 replies
 1 Medal
Mathematics

Fey:
Calculus! Evalutate the deff. integral
 updated one year ago
 10 replies
 3 Medals
Mathematics

Mustakim14:
9^(x^2) 3^7 x = 81
solve for x
 updated one year ago
 24 replies
 1 Medal
Mathematics

PhoenixFire:
A little tip: If you find some math thing done in \(\LaTeX\) you can Rightclick it and choose "Show Math As" then click "TeX Commands"
This…
 updated one year ago
 3 replies
 3 Medals
Mathematics
 > Older questions