Suppose a diffraction grating has three slits. (a) If the bottom slit contributes to the zeroth-order maximum, what is the difference between the distances traveled by light from the middle and bottom slits?
(b) What is the difference between the distance traveled by the light from these two slits at the dark mode surrounding the zeroth-order maximum?​

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.