Two high precision pendulums move through their equilibrium positions once each second, so that the periods of each is precisely 2.000 s. One of them is in St. Petersburg, Russia and has a length of 0.99548 m. The other is in Quito, Ecuador and has a length of 0.98963 m. What is the ratio of the free-fall acceleration of gravity g at these two cities

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

The particles that are found in the nucleus of an atom are