Describe the path that a star on the celestial equator follows from the time it rises until it sets for a person at a latitude of 60° N and a person at the equator
What will be an ideal response?
A star on the celestial equator, when viewed from the Earth's equator, will rise due east and set due west.
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Mass on a Spring: An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could
A. double the amplitude of vibration. B. double the force constant (spring constant) of the spring. C. double both the amplitude and force constant (spring constant). D. double the mass. E. double both the mass and amplitude of vibration.
An ant travels 30 cm east, 25 cm north, and finally 15 cm west. What is the direction with respect to its starting point?
A. 59
N of E
B. 
N of E
C. 
N of E
D. 
N of W
E. 
N of E
In an RC circuit, how many time constants must elapse if an initially uncharged capacitor is to reach 80% of its final potential difference?
a. 2.2 b. 1.9 c. 1.6 d. 3.0 e. 5.0
A wave is described by the function y(x,t) = (3.00 cm)cos[( 3.00 m-1)x + ( 4.00 s-1)t]. What is the wavelength of this wave?
A) 2.09 m B) 3.00 m C) 0.333 m D) 0.250 m E) 1.57 m