True or false the players outside the circle determine which shot is yours

This is the number of complete movements of a wave per second.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.