There is a small scratch on a disco record located 14.5 cm from the center. When played, the scratch makes the record skip 30 times each minute (i. e., the scratch passes under the record player needle 30 times per minute). What is the linear speed of the scratch as it turns

The substances that are necessary for producing of certain hormones and that store and transport vitamins

A( developed during the process of technology design

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?