Part C Now build a model of salt. Place your materials on a sheet of paper. The regular-size marshmallows can
represent the larger chlorine atoms, and the mini marshmallows can represent the smaller sodium atoms.
Connect the marshmallows with toothpicks using the picture as a guide. What was difficult about building
the model?

Which of the following are guidelines to follow for obtaining accurate observations

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?