A person is standing on the South Pole. Their speed is zero (relative to the earth's axis) because they are not moving around due to the earths rotation (like standing in the middle of a merry-go round).

That person walks 100 meters North. What is their new speed due to earth's rotation?
Assume the person's circle that they are now moving is determined by the diameter of the daily circle at this location- which is 200 meters. (Note: a circle's circumference is given by diameter times pi; or 3.14 time a circle's diameter).

Give final answer with correct units and show how you calculated and arrived at this answer.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

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.