The electric field at point p due to a point charge q a distance r away has magnitude e. in order to double the magnitude of the field at p, you could
a. double the distance to 2.
b. double the charge to 2 and at the same time reduce the distance to /2.
c. reduce the distance to /2.
d. reduce the distance to /4.
e. double the charge to 2.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.