What are examples of medium?

The pressure of air pushing down on a house roof is extremely large. Why is the roof not crushed?

When a sound wave moves through a medium such as air, the motion of the molecules of the medium is in what direction (with respect to the motion of the sound wave) ? Group of answer choicesa. Perpendicularb. Parallalc. Anit-paralleld.

slader A girl of mass 55 kg throws a ball of mass 0.80 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s and it bounces back with this same speed. The ball is in contact with the wall 0.050 s.

What happens to atoms when you breathe?

Which avtivties belongs on top of physical activity pyramid

A bobsledder pushes her sled across horizontal snow to get it going, then jumps in. After she jumps in, the sled gradually slows to a halt.

One attometer to nanometer

what is the pressure produced by a kilogram of lead on a horzontal surface if its area it rests on is 0.02m^2?

When performing a Phase 4 workout, how many repetitions per resistance training exercise should be performed?

Technician A says a that a voltmeter can be used to monitor the output signal of an optical sensor. Technician B says that optical sensors should be tested with an oscilloscope because of the sensor's speed. Which technician is correct? A.