Which statements about electric field lines are correct? check all that apply. they point toward a positive charge. they point toward a negative charge. they point away from a positive charge. they point away from a negative charge. they cross over one another between charges. they never cross.

Electric field lines are hypothetical presentation of electric field variation in a region near charge distribution

When we have a distribution of charge then the region near the charge is having field intensity.

The variation of field intensity is given by field lines which has following properties

They point toward a negative charge.  

They point away from a positive charge.  

They never cross.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

gravitational energy

electrical energy

kinetic energy

ligh energy