christian

At the instant that the velocity of the crate is v⃗ =(3.10m/s)ι^+(2.20m/s)j^, what is the instantaneous power supplied by this force?

So for my AP computer science class, I have to write a program that calculates the range of a projectile. I have all the code written but I have a logic error and it works for only the first set of the 2 dimensional array but the rest of the output is zero and I can't pinpoint the error.

here is my methods class:

(tester class in comments, word max)

public class Catapult

{

private double [] [] range;

private double [] veloc;

private int [] angle;

static final int ROWS = 7;

static final int COLS = 6;

Catapult(double [] [] r, double [] v, int [] a)

{

range = r;

veloc = v;

angle = a;

}

public void calcRange()

{

for(int row = 0; row < ROWS; row ++)

{

for(int col = 0; col < COLS; col ++)

{

range [row] [col] = (Math.pow((veloc)[row], 2) * Math.sin(2 * (angle)[col])) / 9.8;

}

}

}

public void print()

{

for(int row = 0; row < ROWS; row ++)

{

System.out.printf("%5.0f", veloc[row]);

for(int col = 0; col < COLS; col ++)

{

System.out.printf("%8.0f", range[row][col]);

}

System.out.println();

}

}

}

So i'm in AP computer science where we learn to code Java but i'm having trouble with a currency converter assignment. We are given 7210.25 pesos and we must convert it to USD and the 1USD to peso is 0.0782. We are told we can use casting, division, and modulus. The problem is, is that I don't know how I could use any of these other operands to convert. Please help!

I'm planning on prototyping a little boom box project that will run on 8 AA NiMH batteries (12 volts) and I want to make a simple LED battery level indicator to put in the boom box but I don't really know where to start on this! it just needs to be small and simple (3 leds max or even just 1). Please help!

Midterms are coming up and I can't figure this out! Can someone please help me!

I have a canon GL2 camcorder that runs on Mini DV tapes but they are a pain to use and the quality from them is not great. I'm looking for a portable dv recorder but they are really expensive. Can any one tell me about a cheaper one?

I'm a surfer here in Florida and I've been liking smart watches, I just need to know I can surf with it and have it get pounded a bit by some waves.

Test review question, any help will do!

I was asked this question on a test for IB history and what I thought was a good answer got me a low mark (68%) I don't know what else to put. He is going to let me do test corrections but I don't know what to correct, please help! I can't afford a low mark!

I hate the way it's worded and they ask 2 questions out of this

A. What did he earn during his 12th year on the job

B. How much did he earn in all 12 years

Any help will do

I have a take home test from alg 2 and I can't figure out how to do this, could someone explain this for me please, this is due Tuesday

I have a 2006 macbook white that I decided to upgrade, I bought 2 pny 1 GB ram sticks and match the specs of the computer, when I boot on both of the new ones, it won't, the sleep light stays on and the screen does nothing. When I boot off 1 old and 1 new, it boots perfectly and the computer recognizes the new ram perfectly. I just don't get it...

I have a car that has 12 volt charging for old iPods and I have a 30 pin to lightning adapter, will the 12 volt charger fry my iPhone or will it just not charge and not harm my iPhone?