You try to pull an object by tugging on a rope attached to the object with a force . The object does not move at all. What does this imply?
A) There are no other forces acting on the object.
B) The inertia of the object prevents it from accelerating.
C) The object has reached its natural state of rest and can no longer be set into motion.
D) The rope is not transmitting the force to the object.
E) There are also one or more other forces that act on the object with a sum - .
E
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A box is being pulled across a rough floor at a constant speed. What can you say about the work done by friction?
a) friction does no work at all b) friction does negative work c) friction does positive work
A substance with a greater specific heat ________ has a larger heat capacity
A) always B) never C) seldom D) sometimes
A crate travels through a factory on a conveyor belt that is inclined at some non-zero angle above the horizontal at a constant speed. If air resistance is negligible, what forces are active on the box?
A. Normal force, weight, static friction, kinetic friction. B. Normal force, weight, static friction C. Normal force, weight, static friction, force of the conveyor belt D. Normal force and weight
The ____________________ shows that sunspots are associated with magnetic activity
Fill in the blank(s) with correct word