If you were standing on the Earth's equator, which of the following in the sky would pass through your zenith during the entire day (24 hours)?
a. The north celestial pole
b. The south celestial pole
c. The celestial equator
d. The nadir
C
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Mars appears from Earth to go through all the phases like Venus
Indicate whether the statement is true or false
Galaxies with disks but no evident spiral arms are called
A) irregular galaxies. B) lenticular galaxies. C) barred spiral galaxies. D) spheroidal components.
Heat is applied to an ice-water mixture to melt some of the ice. In this process
a. work is done by the ice-water mixture. b. the temperature increases. c. the internal energy increases. d. all of the above are correct.
The centers of two circular loops are separated by a fixed distance. For what relative orientation is their mutual inductance a minimum?
1.coaxial and lying in parallel planes 2.lying in the same plane 3.lying in perpendicular planes, with the center of one on the axis of the other 4.The orientation makes no difference.