Red light emitted from a laser has a wavelength of 650 x 10-7 m. What is the frequency of this light? v = 3.0 x 108 m/s

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

What happens when you slowly pulled the carboard?

When using the scientist method, which step comes last?