Two tuning forks are played at the same time. one has a frequency of 176 hz and the other is 178 hz. how many beats per second are heard? 176 178 2 4

Carbon 14 is a naturally occurring stable

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing

Ain is , is 's of ? 0.62 0.79 1.27 1.50