What causes an electric charge?
question 1 options:
the movement of electrons due to a difference in electric potential energy
the movement of protons due to a difference in electric potential energy
the movement of neutrons due to a waterfall
the movement of electrons due to kinetic energy

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.