A pendulum completes 1 cycle in 5 seconds what is the frequency of the pendulum

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?