17. Two rocks are thrown off a cliff at the same height. Rock A is thrown horizontally at 0 degrees with a velocity of 14 m/s and lands 45m from the base. Rock B is dropped straight down from
the outside edge of the cliff.
If both rocks were released simultaneously, which one should strike the ground first?

A-Depends on height of cliff
B-Rock A
C-Rock B
D-They will strike the ground at the same time

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.