What is the first step in using a balance beam scale?
a. zero the balance
b. record the mass values
c. put the mass on the tray
d. use the counter weights and dual to balance the scale.

Your pendulum clock which advances 1.0 s for every complete oscillation of the pendulum is running perfectly on earth at a site where the magnitude of the acceleration due to gravity is 9.80 m/s2. you send the clock to a location on the moon where the magnitude of the acceleration due to gravity is 1.65 m/s2.

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

I’ve been stuck on this for a while