Which statement about electric force is true?
a) it is a purely attractive force.
b) it is a purely repulsive force.
c) it is both an attractive and a repulsive force.
d) it is neither an attractive nor a repulsive force.

Blank liquids and gases exert a buoyant force on objects placed in them

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

What is the measurement of how fast an object moves relative to a reference point?