The Smithsonain used to have a huge pendulum that was 21.0 m long. What was its period?

T = 9.19 seconds

Explanation:

It is given that,

Length of the pendulum, l = 21 m

We need to find its time period. We know that the time period of the pendulum is given by :

g is acceleration due to gravity

So,

So, the period of the pendulum is 9.19 seconds.

what is the question because that is not a question.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is