# Quick Physics Help

1. Nov 24, 2003

### Inquiring_Mike

Quick Physics Help....

X and Z represent point charges of -2.4 x 10^-3 C and +3.3 x 10^-2 C respectively. Calculate the magnitude and direction of the electric field intensity at point Y, 5.00 cm from X and 8.50 cm from Z (they all live in a line).

Can sumone help me?

2. Nov 24, 2003

### himanshu121

Apply the superposition principle i.e Electric field at point will be equal to electic field due to X + due to Z.

3. Nov 24, 2003

### Inquiring_Mike

So does 4.974 x 10^10 look good?

4. Nov 24, 2003

### himanshu121

you didn't tell about the location of point ,is it left of X or right of Z or in between which will decide mag+dir

5. Nov 24, 2003

### Inquiring_Mike

X -----5.0------- Y----------8.5--------Z

6. Nov 24, 2003

### himanshu121

direction will be towards YX and magnitude=9x10^9(2.4x10^-3/5x 10^-2+ 3.3 x 10^-2/ 8.5x10^-2
=3.92 x 10^9

7. Nov 24, 2003

### Inquiring_Mike

Ah...... It all makes sense now.....
THanks for the help!