Question

Unpolarized light of intensity 12 W/m^2 passes through a first polaroid filter and subsequently passes through a second filter with axes rotated by theta = 52 degrees relative to the first filter. What is the intensity of the light finally making it through both filters?

Question options:

	12 W/m^2
	6.0 W/m^2
	4.5 W/m^2
	2.3 W/m^2
	9.3 W/m^2

Question

What is the strength of the electric field at the exact midpoint between charges +5.0 nC and -5.0 nC which are separated by 10. cm?

Question options:

	1.8 x 10^4 N/C
	3.6 x 10^4 N/C
	none of these
	9.0 x 10^3 N/c
	7.2 x 10^4 N/C

Question

A skydiver is moving toward the Earth at 56 m/s (terminal velocity) while holding a loud tone generator producing sinusoidal sound at 1.2 kHz.   Her friend is on the ground observing everything.   What frequency does the stationary (and safe) observer register on the ground? [Take the speed of sound to be 343 m/s].

Question options:

	1.4 kHz
	1.6 kHz
	1.8 kHz
	none of these
	1.2 kHz

Question

Charges q_1 = 2.00 micro C and q_2 = 200. micro C are nearby one another. Which one exerts a greater force on the other?

Question options:

	q_1 and q_2 exert equal but opposite forces on one another
	q_1 and q_2 exert exactly the same force on one another
	q_2 exerts the greater force
	q_1 exerts the greater force
	the answer depends upon how far apart they are

Answer 1

0 Om One Iz I= 12 W/m2 I = 77 / 2 = 12 / 2 = 6 W/m2 I = I, cos 0 = 6 losse = 6x(0.615) - 2.27 W/m² = 2:3 E = 2 k2 2 = 2X9 x 10 x 5x109 82 (10x10-22 2 go u 10-2 = x 103 N/c.