A 2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kN. What is the frequency of the fundamental mode of vibration of this wire?
A) 204 Hz
B) 102 Hz
C) 408 Hz
D) 510 Hz
E) 153 Hz
A
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A compelling advantage of the inflation theory is its explanation of both the ________ and ________ problems
Fill in the blank(s) with correct word
What do we mean by a geocentric model of the universe?
A) a model of the Milky Way Galaxy that has our solar system located at its center B) a model designed to explain what we see in the sky while having the Earth orbit the Sun C) the name given to sphere-shaped models that show all the constellations as they appear in our sky on the celestial sphere D) a model designed to explain what we see in the sky while having the Earth located in the center of the universe
How many "generations" of electroweak particles are there?
A) three B) two C) four D) six E) an infinite number
The interior of a refrigerator has a volume of 0.600 m3. The temperature inside the refrigerator in 282 K, and the pressure is 101 kPa
If the molecular weight of air is 29 g/mol, what is the mass of air inside the refrigerator? The ideal gas constant is R = 8.314 J/mol•K = 0.0821 L ? atm/mol ? K. A) 500 g B) 560 g C) 140 g D) 270 g E) 750 g