Ablock moves up a 30 degree incline under the action of three applied forces. f1 is horizontal and of magnitude 40 n. f2 is normal to the plane of the incline and has magnitude of 20 n. f3 is parallel to the plane and of magnitude 30 n. determine the work done by the forces as the block (and point of application of each force) moves 80 cm up the incline. (answer in j)

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

High schoolphysics 5+3 pts a neon light consists of a glass tube with metal wires at each end. when connected to a high-voltage source, the gas glows. if a fly lands on the glass tube, what will most likely happen? a) the fly will not feel a shock because the glass conducts any free electrons back into the gas. b) electrons will flow directly from the metal wires along the glass and shock the fly. c) the fly will not feel a shock because the glass insulates it from the electrons in the gas and the metal. d) electrons that are moving through the gas will be conducted through the glass and shock the fly.

If a balloon is taken outside on a very cold day, what will occur?