Carla draws two circuit diagrams that connect the same components in different ways, as shown.
which statements about the circuits are correct? check all that apply.
circuit a is a series circuit.
circuit b is a series circuit.
the bulbs in circuit a shine brighter than those in circuit b.
the total resistance in circuit a is greater than that in circuit b.
when a bulb in circuit b goes out, the other bulbs go out.
when a bulb in circuit a goes out, the other bulbs keep shining.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.