Well, we don't know if it's the CLOSEST one, but it's closer than the other ones on this print-out.
There are actually three clues to this in the seismograms:
1). The waves from the tremor reach the Wink station first ... the P wave gets there 50 seconds before Chicago and 3 whole minutes before Tampa.
2). They are stronger (greater amplitude) at Wink than at Chicago or Tampa.
3). The delay between the P wave and the S wave is the smallest at Wink. This delay between the two waves grows as the detector is farther from the quake.
We have no idea WHAT the object is.
But if the 4.6 N is the ONLY force acting on it (including friction), then its mass is 282.2 grams.
Answer;
D. Junction diodes are preferred over point-contact diodes for most purposes.
Junction diodes are preferred over point-contact diodes for most purposes; accurately describes semiconductor diodes.
Explanation;
-Semiconductor diodes are specialized electronic components with two electrodes called the anode and the cathode, that are made with semiconductor materials such as silicon, germanium, or selenium.
-Point contact diode is formed by touching a metallic wire with an N-type semiconductor to form a small area of contact.
-A p-n junction diode is two-terminal or two-electrode semiconductor device, which allows the electric current in only one direction while blocks the electric current in opposite or reverse direction. Junction diodes are preferred over point-contact diodes for most purposes.
