Answer:
a. True
Explanation:
Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.
Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.
Mathematically, the speed of a sound is given by the formula:
Generally, the frequency of a sound wave determines the pitch of the sound that would be heard.
Diffraction occurs for all types of waves, including sound waves.
Answer:
1
Explanation:
Let's call the magnitude of the charge of 10000 electrons .
Because A loses q, it has a net charge (electrons are negative; losing them creates positive charges). Conversely, B has gained q, so it has a charge of
. The distance between them is 1 m.
By Coulomb's law, the force between them is
When A loses an additional 10000 electrons, the charge on it becomes while that on B is
. The distance is now 2 m.
The force is now