Why does light seem to go straight through an open doorway whereas sound seems to spread out when it goes through the same doorway?
What will be an ideal response?
It has to do with the relative sizes of their wavelengths. The wavelength of light is << opening size so very small diffraction; sound wavelengths are >> opening so diffraction is significant.
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Relate Herbig-Haro objects to the T-Tauri Wind
What will be an ideal response?
A string is strung horizontally with a fixed tension. A wave of frequency 60.0 Hz is sent along the string, and it has a wave speed of 58.4 m/s. Then a second wave, one of frequency 120 Hz, is sent along the string. What is the wave speed of the second wave?
a. 29.2 m/s b. 58.4 m/s c. 117 m/s d. 87.6 m/s e. 234 m/s
The number of hours of daylight at any place on Earth depends on
a. the latitude only. b. the day of the year only. c. both the latitude and the day of the year. d. none of these.
A combination of one or more fundamental units is called a(n) ______________ unit
Fill in the blank(s) with correct word