Early cameras were little more than a box with a pinhole on the side opposite the film. (a) what angular resolution would you expect from a pinhole with a 0.36-mm diameter? (assume light with a wavelength of 520 nm.)
(b) what is the greatest distance from the camera at which two point objects 29 cm apart can be resolved?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

At what time will the interfering waves have an amplitudeof zero?

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.