A zero decibel sound level has zero amplitude
a. True
b. False
Indicate whether the statement is true or false
False
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In the context of spectral classes, which of the following statements is true of T dwarfs?
A) They are a spectral class of red giant stars. B) They are hotter than L dwarfs. C) They are a spectral class of white giant stars. D) They are fainter than L dwarfs.
Springs: A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of 120 N/m. By how much does the spring stretch with the brick attached?
A. 360 cm B. 240 cm C. 14 cm D. 24 cm E. 36 cm
The chemical properties of an element are determined by the
A. number of nucleons in the nucleus B. number of neutrons in the nucleus C. number of electrons in the atom
The melting point of aluminum is 660°C, the latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900 J/(kg K). 300 kJ of heat are added to 442 g of aluminum at 100°C, what is the final state of the system?
What will be an ideal response?