# Posts by vii

Total # Posts: 12

**physics(electric forces)**

how do i figure out if an electric force between 2 stationary points are positive or negative?

*March 17, 2013*

**physics**

i know this is stupid most likely but i missed a few weeks of lecture bc i was in hospital and i caught up on most of the notes but certain parts have me confuse, does anyone know how to tell if an electric force is negative or positive?

*March 17, 2013*

**Math**

what's the question?

*February 2, 2013*

**trigonometry**

find the grahp of cos(x-2) first and then switch your x and y value, oh another thing with arc cos you have to limit it from one point to another or else its not a function anymore, so say a regular cos has 2pi for its period don't graph that whole 2pi for the arccos graph...

*February 2, 2013*

**trigonometry**

its just a regular sec graph but you move everything pi/2 to the left

*February 2, 2013*

**trigonometry**

its a regular tangent graph but you move everything over pi/2 to the right

*February 2, 2013*

**trigonometry**

your period is pi i got that by dividing 2pi(which is the regular period for cos and sine) by 2 and then you move everything up 2 and to the right pi

*February 2, 2013*

**algebra**

you just plug in 1.7 for N and isolate the x to get the year 1.7mil= 0.05x - 98.45 its simple algebraic manipulation. you move 98.45 to other side by adding it to both side leavign you with 1.7 mil + 98.45= 0.05x and then divide both side by 0.05 to get x by itself imma assume...

*February 1, 2013*

**math**

by the way you cant factor x^2+ 1 with imaginary i's i believe

*February 1, 2013*

**math**

cube everything in the parenthesis and you get 8x^3 cube the 2 and you get 8 so you you get 8x^3 + 8x factor out 8x 8x (x^2 +1)

*February 1, 2013*

**physics**

an airplane is traveling horizontally 500 m/s at an altitude of 3000 meters. what's the distance the airplane should drop the bomb so it hits the target on the floor

*February 1, 2013*

**Algebra II**

is this what the problem looks like: (( 3n)^2 - (n/n^2) - 1)/ (n^2 / n+1)?

*February 1, 2013*

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