20 cm = bright
40 cm = dim
The longer the wire the bigger the resistance
Answer:
Resistance
Explanation:
The energy is changed into light and heat energy in the case of light bulbs providing resistance. In the case of the toaster, it changes the electricity into heat, causing resistance.
Answer:
24.5 N
Explanation:
The falling object experiences its weight acting downwards and the air resistance in the opposite direction.
The air resistance increases with velocity so there may come a point, depending on the shape of the object and if there is sufficient height, where these 2 forces are equal.
Since the object has no net forces acting on it it will, according to Newton, no longer accelerate but continue with a constant velocity.
This is called Terminal Velocity.
So:
Air resistance = weight
R
=
m
g
R
=
2.5
×
9.8 = 24.5N
