The answer is d, gravity is the only force acting on the object
To me "Ma" mean in real life is either mama or Massachusttes.
I believe the answer is californium because it is used in most metals and is very strong and expensive like gold and silver
So the best conductor for electricity is silver.
However because silver is so expensive we use copper which is the next best conductor
Answer:
276 days
Explanation:
1/4 th of the original means <u><em>2 half lives</em></u>
1 half life = 138 days
So,
2 half lives = 276 days
