Question

A battery with V = 9.0 volts is connected to two identical but unknown capacitors as in the figure. The charge drawn up from the battery to completely charge up the initially uncharged capacitors was 99 micro C. What is the capacitance of each capacitor C?

Question options:

	4.4 micro F
	11 micro F
	5.5 micro F
	22 micro F
	2.2 micro F

Question

Protons move clockwise around a circular path of radius 27 cm in a magnetic field of magnitude B = 0.25 T.   Proton has a charge 1.6 x 10^-19 C.   What is the magnitude of the momentum of the protons and which direction is the magnetic field pointing?

Question options:

	none of these
	0.54 x 10^-20 kg-m/s, into the plane of the circle
	0.54 x 10^-20 kg-m/s, out of the plane of the circle
	1.1 x 10^-20 kg-m/s, out of the plane of the circle
	1.1 x 10^-20 kg-m/s, into the plane of the circle

Question

Satellites use breams of EM waves to communicate with devices on Earth. Suppose a particular satellite has a power of 18 kW and sends a focused cone of EM waves toward Earth 4.9x10^2 km away. When the focused beam reaches the Earth, its circular diameter is about 1.3 km. What is the peak electric field strength in this focused beam?

Question options:

	49 V/m
	10. V/m
	18 V/m
	none of these
	29 V/m

Question

Laser light of wavelength 633 nm falls onto a double slit with slit separation 0.132 mm. An interference pattern is observed on a screen 2.20 m away. How far apart are the bright spots on the screen near the middle of the pattern?

Question options:

	1.66 cm
	1.51 cm
	1.33 cm
	0.960 cm
	1.06 cm