Final answer:
The statement that 'Air moisture has no effect on a charged object' is false because humidity can affect a charged object's ability to discharge. Charging by polarization doesn't require contact magnets induce current in copper and photons are massless yet affected by gravity, among other true/false responses to related physics principles.
Step-by-step explanation:
The statement 'Air moisture has no effect on a charged object' is false. Air moisture can affect the conductivity of the air, which in turn can affect how a charged object discharges. In a more humid environment, the air conductivity increases, potentially allowing charges to leak away from a charged object more easily than they would in dry air.
It is important to note that several statements presented in the question relate to basic principles of physics:
- Charging an object by polarization can occur without physical contact, thus the statement requiring touching is false.
- Dropping a bar magnet through a copper tube does induce an electric current, making that statement true.
- A beam of light, which is essentially composed of photons, can indeed be bent by gravity, and as photons have no rest mass, this statement is true.
In addition, a photoconductive cell can generate a current with even a single electron being expelled due to a photon strike, implying that statement is true. However wave-particle duality on a macroscopic scale does not exist, which makes that statement false. The electric-field lines from a positive point charge do indeed spread out radially and point outward, so that statement is true.
It's possible to propel a solar sail craft using the particles in the solar wind that statement is true, while wood, being an insulator, doesn't prevent lightning from traveling through a tree to reach the earth therefore the statement is true. In outer space, an external force is required to change a stationary object's state of motion, so that is true. Lastly high-voltage wires are held up by insulating connectors but these wires are not covered in insulating material, making that statement false.