How can a change in technology affect scientific knowledge?

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

You add 10 drops of hot water to the cold water in a clear beaker without stirring. after a short time, the water is warm throughout. which law of thermodynamics explains the change in temperature? third law second law first law