Athin film with index of refraction n = 1.40 is placed in one arm of a michelson interferometer, perpendicular to the optical path.
if this causes a shift of 9.0 bright fringes of the pattern produced by the light of wavelength 693 nm, what is the film thickness?

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.