Olber's Paradox is solved in part by the fact that the universe is neither infinitely large nor infinitely old
Indicate whether the statement is true or false
TRUE
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A compass needle in a magnetic field
A) experiences a torque. B) experiences a pair of torques. C) may experience a pair of torques.
A rock is thrown upwards at an angle of 40° with respect to the horizontal. As the rock is rising in its trajectory, the vertical component of its velocity
A) increases. B) decreases. C) remains the same. D) is zero. E) Cannot be determined without additional information.
At greater distances from the sun, planetary surface temperatures increase
Indicate whether the statement is true or false
A ball is projected into the air with 900 J of kinetic energy that is transformed to potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is
A) less than 900 J. B) more than 900 J. C) 900 J. D) not enough information