Electromagnetic radiation of wavelength 2.5 cm is which type?
A) microwaves
B) AM-radio
C) visible
D) FM-radio
E) ultraviolet
A
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A bulb is designed for 100 W at 130 V rms. What is the power dissipated by this bulb if it is used in a 120 V rms circuit?
A. 169 W B. 130 W C. 100 W D. 85.0 W E. it will blow out
A small boat is moving at a velocity of when it is accelerated by a river current perpendicular to the initial direction of motion. If the acceleration of the current is 0.750 m/s2, what will be the new velocity of the boat after
A) 25.3 m/s at 82.4° from initial direction of motion B) 25.3 m/s at 7.59° from initial direction of motion C) 640.1 m/s at 82.4° from initial direction of motion D) 640.1 m/s at 7.59° from initial direction of motion
The most characteristic feature of science is
A) its precise quantitative observations. B) its precise mathematical relations. C) Both of the above. D) the fact that scientific laws are absolutely true, i.e., that they have no exceptions. E) the mutually-supporting relationship between theory and observation.
A watt is one ______________ per second
Fill in the blank(s) with correct word