Compare and contrast latitude and declination. How does each relate to your position on Earth?
What will be an ideal response?
Both are measured in degrees north or south of the equator, and are used to find positions on the Earth or in the sky. If you are at latitude 30 degrees north, then the stars that pass through your zenith (directly overhead) will have a corresponding declination of +30 degrees.
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A current loop is oriented in three different positions relative to a uniform magnetic field. In position 1 the plane of the loop is perpendicular to the field lines. In positionS 2 and 3 the plane of the loop is parallel to the field as shown. The torque on the loop is maximum in
?
?
A. position 1. B. position 2. C. position 3 D. positions 2 and 3. E. all three positions.
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is
a. 0 b. 4 J. c. 100 J. d. none of the above.
During an isothermal process, 5.0 J of thermal energy via the process of heating is removed from an ideal gas. What is the change in internal (thermal) energy of the gas?
A) 0 J B) 2.5 J C) 5.0 J D) 10 J
The visible color of the Galactic Bulge is
A) red from the emission nebulae. B) blue from the OB associations. C) black from the dust clouds. D) yellow from the old Population II stars. E) brown from the dwarfs in the dark matter.