The synodic period of the moon

a. is about 27.32 days long.
b. is the period of time for the moon to orbit Earth once with respect to the stars.
c. is the period of time between successive eclipses at a given location on Earth.
d. is the period of time from when the moon rises until the moon rises again the next night.
e. none of the above


E

Physics & Space Science

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Two capacitors, with CA greater than CB, are connected in series with a battery. Which of the following is true?

a. There is more charge stored on CB. b. There is the same charge stored on each capacitor. c. There is the same potential difference across both capacitors. d. There is more charge stored on CA.

Physics & Space Science

Suppose a ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is going up

A) Both its velocity and its acceleration point upward. B) Its velocity points upward and its acceleration points downward. C) Its velocity points downward and its acceleration points upward. D) Both its velocity and its acceleration points downward. E) Neither velocity nor acceleration can be determined without additional information.

Physics & Space Science

If the length and diameter of a wire of circular cross section are both tripled, the resistance will be

A) unchanged. B) increased by a factor of 9. C) 1/3 of what it originally was. D) 1/9 of what it originally was. E) tripled.

Physics & Space Science

Gravitational Potential Energy: Three masses are located as follows: a 3.0-kg mass is at the origin, a 4.5-kg mass at (0.0 m, 4.0 m) and a 2.5-kg mass at (3.0 m, 0.0 m). What is the gravitational potential energy of this system of masses? (G = 6.67 × 10-11 N ? m2/kg2)

A. -3.8 × 10-10 J B. -3.9 × 10-10 J C. -5.4 × 10-10 J D. -3.2 × 10-10 J E. -3.5 × 10-10 J

Physics & Space Science