Astrand of 10 lights is plugged into an outlet. how can you determine if the lights are connected in series or parallel?
a) unscrew one light. if the other lights stay on, it's a series circuit.
b) unplug the strand. if the first light stays on, it's a series circuit.
c) unscrew one light. if the other lights turn off, it's a series circuit.
d) cut the strand in half. if the plugged in half stays on, it's a series circuit.

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

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.