A wave is traveling through a medium. As it travels, it displaces particles of matter in the same direction as the wave is traveling. This type of wave is a A. longitudinal wave because the particles move parallel to the direction that the wave is traveling
B. transverse wave because of the way the particles are displaced as the wave passes through
C. longitudinal wave because it moves forward through a medium causing the particles to vibrate
D. transverse wave because it is not traveling in a vacuum and the particles are moving

a) cold, dry

explanation:

continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. as they move into warmer air, they can trigger precipitation.

talk back to him about the sport and show him your expertise or leave the room

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.