The fourth harmonic on a string fixed at both ends shows a. A wavelength
b. Two wavelengths
c. Half a wavelength

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n