If the measured momentum of an electron is 3.6 × 10^?27 kg?m/s with an uncertainty of 2.6 × 10^?29 kg?m/s, what is the minimum uncertainty in the position? (h = 6.63 × 10^?34 J?s)
a. 1.5E–8 m
b. 2.0E–6 m
c. 2.6E–5 m
d. 2.9E–6 m
e. 7.2E–3 m
b
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RLC Circuits: The figure shows a series ac circuit. The inductor has a reactance of 60 ? and an inductance of 150 mH. A 50-? R and a capacitor C whose reactance is 90 ? are also in the circuit, and the rms current in the circuit is 1.5 A. What is the rms voltage of the source? 
A. 87 V B. 84 V C. 81 V D. 78 V E. 75 V
Natural processes tend to increase the __________ of thermodynamic systems
Fill in the blank(s) with correct word
Which two factors are most important to the existence of plate tectonics on Earth?
A) mantle convection and a thin lithosphere B) oxygen in the atmosphere and mantle convection C) the existence of life and oxygen in the atmosphere D) Earth's liquid outer core and solid inner core
A very small 100-g object is attached to one end of a massless 10-cm rod that is pivoted without friction about the opposite end. The rod is held vertical, with the object at the top, and released, allowing the rod to swing
What is the speed of the object at the instant that the rod is horizontal? A) 0.71 m/s B) 4.0 m/s C) 1.4 m/s D) 2.8 m/s E) 2.8 m/s