Aproton, moving west, enters a magnetic field. because of this field, the proton curves downward. we may conclude that the magnetic field must have a component what direction?

Positrons are spontaneously emitted from the nuclei of

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning