You are holding a string tied to a lamp post 15 m away. You pull the string so that it has a tension of 1.5 N and a mass density of 0.0045 kg/m. You shake the end of the string at 4 Hz. What is the wavelength of the wave you generate in m? You now take three pieces of string from the previous problem and tie two of them together to make a string of double the mass density. You tie the single string and double string together and to two lamp posts that are 40 m apart as seen below. The interface is centered between the posts and the tension is 1.2 N. You briefly shake the string interface at 5 Hz.

By how many seconds does it win the race?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Time remainin52: 42the chart shows data for a moving object.which conclusion is best supported by the information inthe chart? time (s)velocity (m/s