Which one is the best material for making connecting wires ?
Which one is the best material for making connecting wires ?
A. iron
B. tungsten
C. silver
D. copper
A. iron
B. tungsten
C. silver
D. copper
A. 3
B. 4
C. 5
D. 2
A. A unit of energy
B. A positively charged particle
C. A quantum of electromagnetic radiation
D. A unit of wavelength
A. 10 Raised to power 1
B. 10 Raised to power 2
C. 10 Raised to power 3
D. 10 Raised to power -1
A. Loses a small fraction of its energy
B. Losses most of its energy
C. Loses no energy at all
D. Loses all of its energy
A. 10-10s
B. 10-8s
C. 10-6s
D. 10-9s
A. X-axis
B. Normal on a surface
C. Y-axis
D. Z-axis