1. A hiker starts out at a point we will call "ground zero". He hikes south for 6 2000m (in the negative direction). It takes him 30 min (1,800s). What is his velocity? Show your answer in m/s. 1.1m/s
-1.1m/s
-60m/s
-0.9m/s
200m/s​

Which of the following correctly describes the early view of catastrophism?

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?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.