Humidity can be expressed in many different ways—volume, pressure, mass; but humidity is always
A) the moisture condensation.
B) the amount of water vapor in the air.
C) equal to relative humidity.
D) maximum amount of water vapor in the air at a given temperature.
Answer: B
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If an atom's atomic number is given by Z, its atomic mass by A, and its neutron number by N, which of the following is correct?
A) N = A + Z B) N = Z - A C) N = A - Z D) N = 2A + Z E) N = A + 2Z
A 120-V rms voltage at 1000 Hz is applied to an inductor, a 2.00-?F capacitor and a 100-? resistor. If the rms value of the current in this circuit is 0.680 A, what is the value of the inductor?
A) 34.2 mH B) 35.8 mH C) 11.4 mH D) 17.9 mH E) 22.8 mH
What is the magnitude of the magnetic force on a charged particle (Q = 5.0 ?C) moving with a speed of 80 km/s in the positive x direction at a point where Bx = 5.0 T, By = ?4.0 T, and Bz = 3.0 T?
a. 2.8 N b. 1.6 N c. 1.2 N d. 2.0 N e. 0.4 N
An LRC series circuit has voltage supplied to it at a frequency of 13.0 kHz with a phase difference between the current and the voltage of magnitude 0.20 rad
If the circuit has a capacitance of 5.0 ?F and an inductance of 0.050 H find the resistance of the circuit. A) 0.32 k? B) 9.0 k? C) 0.99 k? D) 20 k?