Compare the de Broglie wavelength of a baseball moving at 90.0 miles per hour (40.2 m/s) to that of a proton moving at 1.30×107 miles per hour (5.81×106 m/s) and a bullet with a speed of 700 miles per hour (313 m/s). Which region of the electromagnetic spectrum are each of these wavelengths near? A. Ultraviolet 10-8 to 10-7 meters B. X-ray 10-11 to 10-8 meters C. Gamma ray 10-16 to 10-11 meters D. Smaller than 10-20 meters. Cannot detect wave-like properties. Only particle-like behavior will be observable. Particle Mass (kg) Velocity (m/s) Wavelength (m) Region baseball 0.140 40.2 ___ proton 1.67×10-27 5.81×106 ___ bullet 1.90×10-3 313

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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

the maxium height is 34m/s

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr