Energy in the Electric Field: A 25.0-V potential source (a battery) is connected across the plates of a 6.66-µF air-filled parallel-plate capacitor having plates that are 1.22 mm apart. What energy density does it produce between the plates? (?0 = 8.85 × 10-12 C2/N ? m2)
Fill in the blank(s) with the appropriate word(s).
1.86 × J/m3
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Exclusion Principle: The principal quantum number n can have any integer value ranging from
A. -? to +?. B. 0 to ?. C. 1 to ?. D. 1 to 100.
The photosphere is about 100 times the diameter of the Earth
Indicate whether the statement is true or false
What is the minimum energy needed to lift 1.0 kg to a height of 200. km and to give it a speed of 8.0 km/s? (Neglect the small decrease of "g" over that distance.)
A) 34. TJ B) 34. kJ C) 34. MJ D) 34. GJ E) 34. J
An alpha particle (m = 6.7 × 10?27 kg, q = +3.2 × 10?19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this motion. Determine the electric potential difference VA?VB.
A. +4.2 V B. ?4.2 V C. ?9.4 V D. +9.4 V E. ?8.4 V