The primary source of sound is vibration. This vibration has to travel through a medium, whether it's a gas, liquid, or solid. A sound wave with a higher energy will have what kind of intensity in relation to a sound wave of a lower energy?

the correct choice is a .

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when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.