4. What does the battery and coil become when they are connected to each other? Electromagnet Permanent MagnetLa eficiencia mecánica del sistema de propulsión de su vehículo determina qué tan bien convierte el combustible en __ energía de vapor gasolina movimiento hacia adelante arrastrarWhich device represents sound as a wave? A microphone A speaker An oscilloscope A thermometerWhat happens to the shape of a wave as frequency increases? It becomes wider It becomes taller It changes shape It disappearsWhat does a greater amplitude in sound waves mean? A softer sound A louder sound A higher pitch A lower frequencyPREV 188189190191192193194195196 NEXT
