An airplanes speed in still air is 240.0 km/h. If the pilot wishes the resultant motion of the plane to be due north when a 60.0 km/h wind is blowing due east, in what direction should the plane be headed? What will then be the resultant velocity of the plane over the ground? A) Heading (degree) of plane.

B) Resultant speed of plane in m/s

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.