Lucretia (a somewhat eccentric physics student) has her left ear against the concrete driveway. If someone drops a metal trash can onto the driveway about 30 m away (close enough to easily hear any sound made), will she hear one sound or two? If two, which one arrives first? Please explain your reasoning.

Aloop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. a loop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. moving the loop outside of the magnetic field region. spin the loop such that its axis does not consistently line up with the magnetic field direction. change the magnitude of the magnetic field. change the diameter of the loop