A uniform electric field of magnitude 4.1 ✕ 105 n/c points in the positive x direction. find the change in electric potential energy of a +4.9 µc charge as it moves from the origin to each of the points given below.

2.009N

Explanation:

Force on a charge is equal to the product of the charge ans electric field intensity of the charge.

F = qE

q = 4.9E-6C

E = 4.1E5 N/C

F = qE

F = 4.9E-6 * 4.1E5

F = 2.009N

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

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.