A block of mass m is attached to a spring with force constant, k and oscillates at
a frequency f. If the mass is changed to m' = m/2, and the spring force is
changed to k' = 2k, then the new frequency f'of the oscillations would be,

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?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine