Karl listed the steps involved when information is sent from transmitters to receivers. 1 - a signal is produced. 2 - radio waves are modulated and amplified. 3 - an antenna sends modulated waves through the air. 4 - an antenna captures the modulated waves. 5 - a signal is heard, seen, or used. which describes the missing step?

How does convection affect our atmosphere? our layers of earth? our oceans?

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?