Amotorboat travels directly east. during its trip, winds blow from directly north, directly south, and southwest. which of the following statements is true? a. all of the winds do work on the boat. b. only the north wind does work on the boat. c. only the south wind does work on the boat. d. only the southwest wind does work on the boat.

If steel is more dense that lake water, why can a boat float

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

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.