The diameter of a 12-gauge copper wire is 0.081 in. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A.
At this current, what is the drift velocity of the electrons? The number of electron carriers in 1.0 cm3 of copper is 8.5 1022 and e = 1.60 10-19 C. A) 0.044 mm/s
B) 0.44 mm/s
C) 0.44 cm/s
D) 0.44 m/s
E) 4.4 cm/s
Question 2
At what temperature would the root-mean-square speed (thermal speed) of oxygen molecules be 13.0 m/s? Assume that oxygen approximates an ideal gas. The mass of one O2 molecule is 5.312 x 10-26 kg. The Boltzmann constant is 1.38 10-23 J/K.
A) 0.217 K B) 0.0666 K C) 1800 K D) 5410 K
Sequential blending uses a computer to calculate the correct ratio as well as the prescribed order ...
The sensing wire in a typical hot wire mass air flow sensor.
How to evaluate third-order determinants by Minors Method (Question 2)
A current-carrying wire is placed in a uniform magnetic field, as shown below.
A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ...
Calculus help: Find a cubic function f (x) = ax3 +bx2 +cx+d that has a local maximum value of 3 ...