On the surface of a certain planet, the gravitaional field strength has numerical value 5.2. This means that
A. an object of mass 1 kg will experience a gravitational force of 5.2 newtons
B. an object must have a mass of 5.2 kg in order to experience a gravitational force of 1 newton
Answer: A. an object of mass 1 kg will experience a gravitational force of 5.2 newtons
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The orbits of many extrasolar planets detected to date are
A) parabolic B) highly elliptical C) perfectly circular D) slightly elliptical
As seen from the Earth's southern hemisphere, the celestial equator passes
a. north of overhead. b. south of overhead. c. through the north celestial pole. d. through the south celestial pole.
Fluid Flow: Consider a very small hole in the bottom of a tank that is 17.0 cm in diameter and filled with water to a height of 90.0 cm. Find the speed at which the water exits the tank through the hole.
A. 4.20 m/s B. 17.64 m/s C. 44.1 m/s D. 48.3 m/s
If you draw a spacetime diagram, the worldline of an object that is stationary in your reference frame is
A) vertical. B) horizontal. C) slanted. D) curved. E) a circle.