Which statement BEST describes the age of our solar system and universe? A: Our solar system and the universe are estimated to be 5 billion years old.
B: Our solar system is at least twice as old as the universe.
C: Our solar system and the universe are estimated to be 10 billion years old.
D: The universe is roughly 13.7 billion years old.

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?