Not pushing yourself hard enough is the answer since your heart rate doesn't even hit your lower minimum.
Pushing yourself to the limit is at your max heart rate.
Just at the right spot is at your max heart rate.
Pushing yourself too hard is above your max heart rate.
Answer:
She is not getting a good deal.
Explanation:
The equation that relates heat with mass, specific heat and temperature change of an object is
.
Always convert temperature to Kelvin, although in our case it's not necessary because the
will be the same, and we will leave the mass in grams because we will be getting
units for specific heat, which we can compare to the one given for gold.
We then calculate the specific heat of the object in question:

Which shows it's not gold.