Which of the following is true of Venus?
A) It is the smallest planet in the Solar System.
B) It is the brightest natural object in the sky.
C) It is about the same size as Earth.
D) It is a self-luminous body that generates its own energy.
C
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A series of transitions in atomic hydrogen that produce emissions all in the ultraviolet portion of the spectrum are those ending in the level
A. n = 2. B. n = 4. C. n = 1. D. n = 3. E. n = 5.
Which of the following can you never know about a black hole?
a. Mass b. Rotation c. Electrical charge d. The elements of the material that has fallen in.
Mass on a Spring: A 0.150-kg air track cart is attached to an ideal spring with a force constant (spring constant) of 3.58 N/m and undergoes simple harmonic oscillations. What is the period of the oscillations?
A. 2.57 s B. 0.527 s C. 0.263 s D. 1.14 s E. 1.29 s
This figure summarizes the geological histories of the terrestrial worlds. Based on this figure, what can you conclude?
A) The most important factor in a planet's geological history is its size. B) The most important factor in a planet's geological history is its distance from the Sun. C) We can trace almost all the key properties of a planet's geology back to the number of impacts it suffered during the heavy bombardment. D) Earth is the only planet in the inner solar system capable of harboring life.