An object is located 3.8 m in front of a plane mirror. The image formed by the mirror appears to be
A)
1.9 m in front of the mirror.
B)
on the mirror's surface.
C)
1.9 m behind the mirror's surface.
D)
3.8 m in front of the mirror.
E)
3.8 m behind the mirror's surface.
E
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Diffraction Gratings: In a diffraction grating experiment, light of 600 nm wavelength produces a first-order maximum 0.35 mm from the central maximum on a distant screen. On the same screen, a second monochromatic source produces a third-order maximum 0.87 mm from the central maximum when it passes through the same diffraction grating. What is the wavelength of the light from the second source?
Fill in the blank(s) with the appropriate word(s).
How does the entropy of 1 mol of helium gas in a container at room temperature compare to 1 mol of argon gas in an identical container at the same temperature?
A. The helium gas has greater entropy. B. The argon gas has greater entropy. C. Both gases have the same entropy. D. One needs to know more to answer definitively
Impacts of large asteroids on the Earth's surface generally result in
A) localized destruction close to the impact area B) the destruction of most but not all life on Earth C) the formation of Moons D) total destruction of all life on Earth
In a thermodynamic process involving 7.8 moles of an ideal gas, the gas is at an initial temperature of 24°C and has an initial volume of 0.040 m3
The gas expands adiabatically to a volume of 0.080 m3. For this gas, CV = 12.27 J/mol • K, and the ideal gas constant is R = 8.314 J/mol ? K. Calculate the work done by the gas during this expansion.