![]() This phenomenon can also be correlated with the doppler effect. This is due to the variation of frequency in sound waves. ![]() Whereas, when the vehicle passes, the sound fades away. When the vehicle approaches us, the sound increases. Imagine a vehicle approaching you while driving. Explain how the phenomena of beats occurs.Apparent frequency is a phenomenon that occurs due to the relative motion between two objects.Explain how does path difference cause constructive and destructive interference?.What is constructive and destructive interference? When does each occur?.What is dispersion and what causes it? Give an example.Why don’t we hear it like ordinary lightning? (Hint: Think about the previous question.) The term ‘heat lightning’ is sometimes used to describe lightning that we can see off at a distance but not hear.Why is it difficult to hear someone on the other side of a lake during the day when the air above the lake is cool but very easy to hear voices at night when the air above the lake is warmer than air higher up? (Hint: Sound travels faster in warmer air.).On a windy day, why can you hear someone clearly if they are downwind but can’t hear them as well if they are upwind?.What modern devices depends on total internal reflection?.What is total internal reflection? When does it occur?.Suppose color X bends more when passing through glass than color Y.Why does a pond or lake with very clear water look shallower than it really is? Explain using a diagram.If you want to zap a fish with a laser, should you aim below it, at it or above it? Explain.If you want to spear a fish under water from the shore should you aim below it, at it or above it? Explain.What does this tell you about the speed of light in glass, water and soybean oil? If you place a glass test tube in water you can still see it but if you place it in soybean oil it disappears.If a fish wore goggles to come above the surface, why would it want to have goggles filled with water?.Why are images not blurry underwater if you are wearing goggles?.Why are images blurry underwater if you don’t have goggles?.Give some examples of common, everyday objects that use refraction to operate.How does refraction depend on the speed of a wave?.Give a definition of the law of refraction, explaining the difference between reflection and refraction.Why is it harder to see the road at night in the rain?.Why do sound studios often have the walls covered with egg carton shaped foam?.Why are matte finishes for photos and books generally better than glossy finishes?.What is the difference between diffuse reflection and specular reflection?.Explain how this would help reduce glare on a bright day. Some storefront windows are angled so the bottom is further in and the top comes out towards the street.Why is the image in a mirror reversed left to right but not top to bottom? (A drawing might help your explanation.).Trucks sometimes have a sign on the back that says “If you can’t see me in my mirror, I can’t see you.” Explain the physics here.Should she simply aim at the image of the target in the mirror? Explain. They can see their suspect who is around the corner, reflected in a mirror. A police officer has a new sound gun that stuns the criminal.Do sound waves obey the law of reflection? Explain. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |