Aunit for measuring frequency is the which of the following frequencies falls in the range of rf waves us a. 6,000,000 hz b. 600,000 hz c. 60 hz d. 6,000 hz ed by commercial radio broadcasting stations?

What are two different ways you could find the value of a? explain these methods.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.