What happens to a volume of water when its temperature is reduced from 8°C to 4°C?
a. density increases
b. density decreases
c. density remains constant
d. vaporizes
a
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In a particular case of Compton scattering, a photon collides with a free electron and scatters backwards. The wavelength after the collision is exactly double the wavelength before the collision. What is the wavelength of the incident photon?
A) 3.6 × 10-12 m B) 4.8 × 10-12 m C) 2.4 × 10-12 m D) 1.2 × 10-12 m E) 6.0 × 10-12 m
Estimate the mass diffusivity of methane into air at 300 K, assuming ideal gas behavior.
What will be an ideal response?
At what temperatures is radiation emitted from a black body?
What will be an ideal response?
The quantum mechanical model of the hydrogen atom suggests a visual picture of the electron as which of the following?
a. raisin in pudding b. probability cloud c. planetary orbiting body d. light quantum