Wave Characteristics: An FM radio station broadcasts at 96.7 MHz. What is the wavelength of the radio wave used for this broadcast? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
3.1 m
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In a transformer, the relationship between the primary and secondary currents depends on all of the following quantities except:
A. the number of turns the primary and secondary windings have B. the resistance of the windings C. the voltage in the primary winding D. the properties of the core material
A wind of velocity 10 m/s is blowing through a wind generator with blade radius 5.00 meters. What is the maximum power output if 30.0% of the wind's energy can be extracted? ?air = 1.25 kg/m3.
A. 7.20 kW B. 14.7 kW C. 21.3 kW D. 29.4 kW E. 39.6 kW
As a light source blinking at a steady rate approaches you at an increasing speed (accelerating toward you), the rate at which the blinks encounter you
A) increases. B) decreases. C) remains the same.
Luminosity is
A) the total amount of light energy that star emits into space. B) the stars apparent brightness. C) the stars particular color spectrum output. D) the stars total infrared output.