Which factor does not affect the strength of an electromagnet? O A. The number of coils of wire
O B. The material of the core
C. The placement of the ammeter in the circuit
O D. The number of batteries added to the circuit

The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. which type of wave is found in this region? a. x-rays b. ultraviolet rays c. infrared waves d. radio waves

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

What is a carrier wave and how does it affect what you hear on the radio