Objects 1 and 2 attract each other with a gravitational force
of 18.0 units. If the mass of Object 1 is doubled AND the
mass of object 2 is tripled, then the new gravitational force
will be units.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

  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

prndulum needs thread, weight clock to time swings