Define work in terms of applied force and distance
The work done by a constant force acting on an object is the product of the
magnitude of the force (or component of force) and the parallel distance through
which the object moves while the force is applied.
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The equilibrium rule states that the vector sum of all forces acting on a
A) body at rest is zero. B) body in uniform motion is zero. C) non-accelerating body is zero. D) all of the above
The star Algol is
a. an astrometric binary. b. a spectroscopic binary. c. a visual binary. d. an eclipsing binary. e. both b and d
The earliest geological period in the Phanerozoic eon was the
A) Cambrian B) Triassic C) Tertiary D) Permian
The local solar time at 75°W is 12:00 noon. What is the longitude of an observer who sees the full moon on her meridian at this time?
a. 105°E b. 75°E c. 15°E d. 15°W e. None of the above