To apply problem-solving strategy 12.1 standing waves and normal modes. a cellist tunes the c string of her instrument to a fundamental frequency of 65.4 hz . the vibrating portion of the string is 0.600 m long and has a mass of 14.4 g . with what tension must she stretch that portion of the string? what percentage increase in tension is needed to increase the frequency from 65.4 hz to 73.4 hz , corresponding to a rise in pitch from c to d?

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.