Three compasses are shown next to a wire carrying a positive current (towards the viewer). The strength of the total magnetic field at the location of the left compass is 0.30 G. The strength of the total magnetic field at the location of the right compass is 0.40 G. Which of the following best describes the strength of the total magnetic field at the location of the middle compass?

A. Between 0.00G and 0.30 G
B. Exactly 0.30 G
C. Between 0.30 G and 0.40 G
D. Greater than 0.40 G

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.