At a construction site, a crane lifts a steel beam with a mass of 330 kg.

a. what is the gravitational potential energy added to the steel beam when the beam reaches a height of 18.4 m?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )

According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?