Utilizing the concept of thermal expansion, design and FULLY DESCRIBE a pendulum which exhibits length invariance due to temperature fluctuations...note that this could be an important feature, since the length of a pendulum determines its period of oscillation. Be sure to include a schematic AND algebraic justification for your design.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer