Question
Physics multiple choice help
The wavelength of the radiation from a typical FM radio station is about 3.00 m. Suppose some of these radio waves strike a large metal building with a 4.00 m wide doorway in the side. At what angle will a radio 1.00 times 102 m beyond the doorway (inside the building) get the worst reception? You are looking at yourself in a reflecting ball. Which of the following describes your image? A metal sphere is connected to the Earth by a piece of copper wire ("grounded"), so that charges may flow freely between it and the Earth. A positive charge is placed near the sphere, but does not touch it. Which of the following happens? Two light bulbs have filaments with different resistances. They are connected in parallel to the same voltage source. Which one will use more power?
Explanation / Answer
QUESTION #2
e. Upright, reduced, virtual
QUESTION #3
a. The sphere is unaffected because it is grounded
QUESTION #4
b. The one with smaller resistance