Transits of multiple planet systems can be analyzed to infer planetary masses
Indicate whether the statement is true or false
TRUE
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The lowest energy level of a hydrogen atom (n = 1) is called
a. the ground state. b. the potential state. c. the ionization state. d. none of these.
Refracting Telescope: A student constructs an astronomical telescope with a magnification of 10. If the telescope has an objective lens of focal length 0.50 m, what is the resulting length of the telescope?
A. 53 cm B. 55 cm C. 60 cm D. 75 cm
Electric Field of Point-Charges: An electric dipole consists of charges of ±6.00 µC that are 10.0 cm apart, as shown in the figure. Find the magnitude and direction of the electric field this dipole produces at point P, which is 7.00 cm from each charge. (k = 1/4??0 = 8.99 × 109 N ? m2/C2) 
What will be an ideal response?
A body of mass 5.0 kg is suspended by a spring which stretches 10 cm when the mass is attached. It is then displaced downward an additional 5.0 cm and released. Its position as a function of time is approximately
A. y = ?0.10 sin 9.9t. B. y = 0.10 cos 9.9t. C. y = ?0.10 cos (9.9t + 0.1). D. y = 0.10 sin (9.9t + 5). E. y = ?0.05 cos 9.9t.