9 A microphone is connected to a cathode ray oscilloscope. The diagram, shows the sound wave displayed HAL
The frequency of the sound is increased. What could be the new pattern on the oscilloscope?
A
B
C
D
V
TV
A
B

Which best represents the law of conservation of mass ?

Explain what will happen if decomposers were apsent from a forest ecoysystem.

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction