Question 1 (4 points)
a 4.0-resistor, an 8.0-resistor, and a 10.0- resistor are connected in series across an 11-v battery. the total
potential difference across the 4.0-and 8.0- resistors is:

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?