Light of wavelength 589 nm passes through a pair of slits to form an interference pattern on a screen 400 cm away (vertical scale is intensity). The ruler is in cm (that is, from the "4" to the "5" is one centimeter). Find the separation between the slits in micrometers to within 15%.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Avalue that describes how heavy an object is and is related to the force of gravity is