A stretched string is observed to vibrate in three equal segments when driven by a 480 Hz oscillator. What is the fundamental frequency of vibration for this string?
a. 480 Hz
b. 320 Hz
c. 160 Hz
d. 640 Hz
e. 240 Hz
c
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Which kind of telescope is shown?
a. infrared b. radio c. optical d. ultraviolet
A glass tea kettle containing 500 g of water is on top of the stove. The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m2 and is 1.5 mm thick
At a certain moment, the temperature of the water is 75°C, and it is rising at the rate of 3 C° per minute. What is the temperature of the outside surface of the bottom of the tea kettle? The thermal conductivity of glass is 0.840 W/(m•K). Neglect the heat capacity of the kettle. A) 39°C B) 92°C C) 120°C D) 86°C E) 77°C
When iron is galvanized, it is coated with _________.
Fill in the blank(s) with the appropriate word(s).
Outgassing refers to the formation of an atmosphere by the attraction of gases from the surrounding nebula
Indicate whether the statement is true or false