How do data collected from tree rings provide evidence for climate change?
Why isn’t this a answer when you search it

What are similarities and differences between refraction, reflection, diffraction and absorption?

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b. what is the wavelength of the wave? c. what is the amplitude of the magnetic field? d. what is the intensity of the wave?