Very thin glass rod 4 meters long is rubbed all over with a silk cloth. it gains a uniformly distributed charge 1.7 ✕ 10−6 c. two small spherical rubber balloons of radius 1.2 cm are rubbed all over with wool. they each gain a uniformly distributed charge of -8 ✕ 10−8 c. the balloons are near the midpoint of the glass rod, with their centers 3 cm from the rod. the balloons are 2 cm apart (4.4 cm between centers). (a) find the net electric field at the location marked by the ✕, 0.6 cm to the right of the center of the left balloon. things to think about: which objects make nonzero contributions to vector e at this location

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

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