The Oort cloud was probably formed by planetesimals that were tossed to the outer parts of the Solar System by the planets.
Answer the following statement true (T) or false (F)
True
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If the number of turns in a rectangular coil of wire that is rotating in a magnetic field is doubled, what happens to the induced emf, assuming all the other variables remain the same?
A) It stays the same. B) It is reduced by a factor of 4. C) It is reduced by a factor of 2. D) It is doubled. E) It is quadrupled.
A superconducting wire carries a current of 1.0 × 10^4 A. Find the magnetic field at a distance of 1.0 m from the wire
Which best describes the relationship between two systems in thermal equilibrium?
a. No net energy is exchanged. c. Masses are equal. b. Volumes are equal. d. The velocity is zero.
According to a postulate of Einstein, which of the following describes the nature of the laws of physics as one observes processes taking place in various inertial frames of reference?
a. Laws are the same only in inertial frames moving at near speed of light. b. Laws are the same in all inertial frames. c. Laws are the same only in inertial frames with zero velocity. d. Laws are the same only in inertial frames moving at low velocities.