Answer: the answer is d
Explanation: there are not more than 10 violations within a twelve month period hope this helps
The most common measuring device to be used in measuring enthalpy changes is the thermometer.
Answer:
halved
Explanation:
The velocity of the a wave is obtained by multiplying the frequency and wavelength.

Where
v = Velocity
f = Frequency
= Wavelength
The velocity here is constant. So, if the frequency is doubled the wavelength is halved.