Answer:
A real emf device has an internal resistance, but an ideal emf device does not.
Pressure and temperature are the variables in Gay-Lussac's law.
The law states that a pressure of a gas is directly proportional to the gas' temperature if the mass and volume are fixed. This means that there are only two variables, as the other two values are fixed: only pressure and temperature can change according to this law.
Answer:
ooh thanks but don't give me advise
Answer: frequency is 20000hz
Explanation:
Velocity=340m/s
Wavelength=0.017m
Frequency=velocity ➗ wavelength
Frequency=340 ➗ 0.017
Frequency=20000hz
