Lava Dome definition
What will be an ideal response?
Viscous lava that has escaped from a volcanic vent
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Rotational Dynamics: A uniform rod is 2.0 m long. It is hinged to a wall at its left end, and held in a horizontal position at its right end by a vertical very light string, as shown in the figure. What is the angular acceleration of the rod at the moment after the string is released if there is no friction in the hinge?
A. 15 rad/s2 B. 3.3 rad/s2 C. 7.4 rad/s2 D. 11 rad/s2 E. It cannot be calculated without knowing the mass of the rod.
Two identical rooms, A and B, are sealed except for an open doorway between them. Room A is warmer than B. Which room has the greater number of molecules?
A. Room A B. Room B C. Both have the same number of molecules.
Based on observations, which of the following statements about stars in the Milky Way is generally true?
A) The older the star, the lower its abundance of heavy elements. B) The younger the star, the higher its mass. C) The older the star, the faster its orbital speed. D) The less massive the star, the older it is. E) The older the star, the bluer its color.
The laws of thermodynamics can be related to the following: (i) the measurement of temperature, (ii) the lowest temperature possible, (iii) conservation of energy, and (iv) only part of heat energy available may be turned into work. Which of these involve the first and second law?
a. (i) and (ii) b. (ii) and (iv) c. (i) and (iii) d. (iii) and (iv)