A3200 lb vehicle is being designed with a drag coefficient of 0.35 and a frontal area of 50 ft2. if the vehicle is traveling at 70 miles per hour on a downhill grade of 2% at an air density of 0.002378 slugs/ft3, what tractive effort is required to overcome the vehicle resistance forces (in lb)?

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

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.

The softest and hardest minerals are: softest hardest