A spherical shell of inner diameter R and outer diameter 3R has a uniform density ?. What is the magnitude of the gravitational acceleration a distance 4R from the center of the spherical shell?
A)
7?G?R/6
B)
104?G?R/3
C)
27?G?R/12
D)
27?G?R/3
E)
13?G?R/6
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).
When a 0.350-kg package is attached to a vertical spring and lowered slowly, the spring stretches 12.0 cm
The package is now displaced from its equilibrium position and undergoes simple harmonic oscillations when released. What is the period of the oscillations? A) 0.695 s B) 0.483 s C) 0.286 s D) 0.0769 s E) 1.44 s
A hemispherical surface (half of a spherical surface) of radius R is located in a uniform electric field of magnitude E that is parallel to the axis of the hemisphere. What is the magnitude of the electric flux through the hemisphere surface?
a. pR2E b. 4pR2E/3 c. 2pR2E/3 d. pR2E/2 e. pR2E/3
The rays that sunburn you are
A) X-rays. B) radio. C) visible. D) ultra-violet. E) infra-red.