Answer: Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
Explanation:
Average speed is a measure of an object's speed over a distance for an amount of time. Instantaneous speed <span>is a measure of an object's speed over a distance for an <em>instant </em>in time. </span>
Answer:
E = 4.78*10^6 N/C
Explanation:
In this case you have to take into account that both magnetic force and electric force must be equal


However, you have to know first what is the speed of the electron by using the expression for the kinetic energy (1keV=1000*1.6*10^{-19}J):

by replacing in the expression for the forces you have

HOPE THIS HELPS!!
No, speed is not a vector. it is scalar.
because it doesn't need direction but need magnitude.