The following are possible ways to express the quantity 0.391 (give all correct answers, i. e., b, ac, note: 3.45e-8 is a way you can enter the number 3.45×10-8 in most computers. a) 0.000391e4 b) 39.1 x 10-1 c) 0.391e+1 d) 3.91e-1 e) 0.0391e+1 f) 0.00391 x 102

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

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?

Which situation will have the highest resistance? a. long wire and high temperatureb. short wire and high temperaturec. long wire and cold temperaturedshort wire and low temperature