Apendulum makes 36 vibrations in 60 seconds, what is its: period? and frequency

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

What are the necessary conditions for fusion?