In competition, an athlete threw a flying disk 139 meters through the air. while in flight, the disk traveled at an average speed of 13.0 m/s. how long did the disk remain in the air?

Time, t = 10.69 seconds

Explanation:

Given that,

Average speed of the disk, v = 13 m/s

The athlete threw a distance through the air, d = 139 meters

We need to find the time the disk remains in the air. Let t is the time taken. The average speed of the disk is given by :

t = 10.69 seconds

So, the disk remains in the air for 10.69 seconds. Hence, this is the required solution.

correct it is c.) b b

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia