Other Physics Answers

What is a rainbow? How is it formed? Explain and be specific.

What is refraction? Why does it occur? Give examples of sound refraction and light refraction.

What is the Doppler effect? How does it work? If a star looks bluer to us than it should, is the start moving away from us or toward us? Explain.

What is the period of a sound wave whose wavelength is 2.0 meters?

What is a transverse wave? For a transverse wave, define wavelength, amplitude, period, frequency, and wave speed. What is the units of each? Explain how these characteristics are related.

Two loudspeakers are placed facing each other and driven by the same source at 680 Hz. A listener is positioned between the two speakers on the line separating them, thus creating a constructive interference at the listener's ear. What minimum distance would one of the speakers be moved back away from the listener to produce destructive interference at the listener's ear? (The speed of sound = 340 m/s.)

The period of oscillation of an irregularly shaped object is 1.2 s. Its mass is 1.0 kg and it is hanged from one of its ends to oscillate, which is 3.5 cm away from its center of mass. What is its moment of inertia?

what is the image distance and image size if a 10.00 cm.tall light bulb placed a distance of 91 cm. from a convex lens having a focal length of 30.8 cm?

what is the image distance and image size if a 3.00 cm tall light bulb is paced at a distance of 30.5 cm from diverging lens having a focal length of -10.2 cm?

A car accelerates from rest to reach a certain speed in 10 minutes. If then continues at this speed for another 10 minutes and then decelerates to rest in further 5 minutes. If the total distance covered is 17.5km. Find the speed reached.