Answer the following statement(s) true (T) or false (F)
1. A point where the electric field created by two charged particles is zero must lie somewhere on the infinite line that goes through those particles.
1. TRUE
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Which of the fields are physically impossible and why?
A. This field violates the Ampere-Maxwell law. B. This field violates Gauss’s law for the magnetic field. C. The field violates both of the above laws. D. This field is physically possible.
Which of the following best describes the lunar maria?
A) relatively smooth, flat plains on the Moon B) densely cratered regions on the Moon C) mountainous regions on the Moon D) frozen oceans of liquid water on the Moon
The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines
Indicate whether the statement is true or false
A rock from a volcanic eruption is launched straight up. Which one of the following statements about this rock while it is in the air is correct if you neglect the presence of air?
A) On the way up, its acceleration is downward and its velocity is upward, and at the highest point both its velocity and acceleration are zero. B) On the way down, both its velocity and acceleration are downward, and at the highest point both its velocity and acceleration are zero. C) Throughout the motion, the acceleration is downward, and the velocity is always in the same direction as the acceleration. D) The acceleration is downward at all points in the motion. E) The acceleration is downward at all points in the motion except that is zero at the highest point.