All of the following statements are true. Which one explains the reason why there is not a solar eclipse at every new Moon?
A) The nodes of the Moon's orbit precess with an 18-year period.
B) The orbital plane of the Moon is tilted by about 5° to the ecliptic plane.
C) The Moon rotates synchronously with its revolution about Earth.
D) The sidereal month is shorter than the lunar month.
E) The Moon is the primary cause of tides on Earth.
B
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Process of Science: The "standard model" that describes the building blocks of nature works extremely well and has been most recently verified through the discovery of the Higgs boson
Why, then, do some scientists continue to search for a simpler model?
A uniform ball with diameter of 10 cm rolls without slipping on a horizontal tabletop. The moment of inertia of the ball about an axis through its center is 2.2 × 10-3 kg ? m2, and the translational speed of its center is 0.45 m/s
(a) What is its angular speed of the ball about its center of mass? (b) What is the rotational kinetic energy of the ball? (c) What is the ball's angular momentum about its center of mass?
Electromagnetic induction occurs in a coil when there is a change in
A) electric field intensity in the coil. B) magnetic field intensity in the coil. C) electromagnetic polarity. D) none of the above
Fundamental Forces: Inside the nucleus, the strongest of the four fundamental forces is
A. the weak nuclear force. B. the electromagnetic force. C. the gravitational force. D. the strong nuclear force.