Consider a diffraction grating with 7000. lines/cm with a screen 2.50 m away and 440. nm wavelength light
(a) How many side maxima would be observed on one side of the central maximum? (b) What is the linear distance between the 1st and 2nd maxima?
(a) 3
(b) 1.15 meters
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How does the traditional theory of the formation of the galaxy explain the origin of globular clusters?
a. They formed in the disk and later were ejected to the halo. b. They formed in other galaxies and were captured by close interactions. c. They build over time from the collision of stars in the halo. d. They formed early on during the free-fall collapse of the proto-galactic material.
In what way is the rocky material of Jupiter's core different from the rocks found on Earth?
a. It is much cooler because Jupiter is further from the sun. b. It contains more liquid water. c. It is much hotter and denser because of the extreme pressure at the core of Jupiter. d. It is not composed of iron and nickel because this material will float of the surface e. It is composed entirely of ices that have frozen into a large rock like structure.
If the magnitude of the cross product of two vectors is one-half the dot product of the same vectors, what is the angle between the two vectors?
What will be an ideal response?
What do astronomers generally believe about the origin of Mars's moons?
a. They formed with the planet out of the protoplanetary material. b. They formed elsewhere and were captured at a later time. c. They were ejected from Mars during its formation. d. They were once a single moon and a later catastrophic event broke them in two.