In the atoms of most materials the fields of individual electrons
A) cancel one another.
B) partly align.
C) completely align.
Answer: A
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Which of the following sequences of electromagnetic radiation is arranged in the order of increasing energy?
A) Gamma rays, X-rays, infrared radiation, and radio waves B) Radio waves, microwaves, gamma rays, and ultraviolet radiation C) Visible light, ultraviolet radiation, X-rays, and gamma rays D) Visible light, microwaves, radio waves, and infrared radiation
A photon of wavelength 18.0 pm is scattered through an angle of 120° by a stationary electron. What is the wavelength of the scattered photon? (mel = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s)
A) 21.6 pm B) 22.9 pm C) 20.4 pm D) 19.2 pm E) 24.1 pm
Terminal Voltage and Internal Resistance: When an external resistor of resistance R1 = 14 ? is connected across the terminals of a battery, a current of 6.0 A flows through the resistor. When a different external resistor of resistance R2 = 64.4 ? is connected instead, the current is 2.0 A. Calculate (a) the emf of the battery and (b) the internal resistance of the battery.
Fill in the blank(s) with the appropriate word(s).
Escaped slaves were told to follow this asterism