If you blow air between a pair of closely-spaced Ping-Pong balls suspended by strings, the balls will swing A) toward each other.
B) apart from each other.
C) away from the air stream.

Asample of a gaseous substance changes into liquid. this process is called (blank) and it takes place when heat is (blank) a gaseous system

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.