Many of the extrasolar planets that have been detected directly to date are
A) very large and at great distances from their parent star
B) small and at great distances from their parent star
C) small and close to their parent star
D) very large and close to their parent star
A
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Exclusion Principle: How many electrons will fit into a 4f subshell?
A. 3 B. 4 C. 7 D. 14
Force on a Moving Charge: A charged particle moving along the +x-axis enters a uniform magnetic field pointing along the +z-axis. A uniform electric field is also present. Due to the combined effect of both fields, the particle does not change its velocity. What is the direction of the electric field?
A. along the -y-axis B. along the +y-axis C. along the -x-axis D. along the +x-axis E. along the -z-axis
Interferometry connects two or more separate telescopes only in the optical band of the electromagnetic spectrum
a. True b. False Indicate whether the statement is true or false
The thickness of the Galaxy near the Sun is about 1000 light-years
Indicate whether the statement is true or false