Question

Question 1.

Part A. A proton spit out from the Sun hurtles heads toward Earth -- directly at you! In what direction does the earth's magnetic field nudge it?

North, East, South, or West? Choose One.

Part B: At home during a break from classes, you visit your grandparents who still have a tube-type television, with the deep and heavy case. (In them, a beam of electrons fired from the center rear of the picture tube is steered to 'paint' an image on the front of the tube.)  Their living room is arranged so that the TV is on the north wall of the house, facing south. In which direction, if ever so slightly, does the weak magnetic field of the earth deflect the electron beam inside the tube?

Up, Down, Left, Right or The beam is not affected at all? Choose one.

Part C: Later, you go to the guest room to get ready for bed. Your grandparents have another old tube type television in that room, this time on the west wall, facing east. Now which way are the electrons in the tube deflected, if ever so slightly?

Up, Down, Left, Righ, or Not At All? Choose one.

Part D: A velocity selector, as in the previous question, works to select ions of a particular speed because

-the electric and magnetic fields both depend on the speed of the ions.

-neither the electric nor the magnetic fields depend on the speed of the ions.

-the magnetic force on an ion depends on its speed, but the electric force does not.

-the electric force on an ion depends on its speed, but the magnetic force does not.

Choose one.

Answer 1

Ans of Part D I am doing first. You can read it later if you want.

PART D:

If a particle of charge q is moving at a velocity through a magnetic field , then the magnetic force acting on it is

   _mag = q

And a charge q in electric field experiences a force of _electric = q .

So, it is clear that, "The magnetic force on an ion depends on its speed, but the electric force does not."